/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 15:33:29,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 15:33:29,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 15:33:29,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 15:33:29,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 15:33:29,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 15:33:29,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 15:33:29,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 15:33:29,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 15:33:29,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 15:33:29,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 15:33:29,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 15:33:29,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 15:33:29,420 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 15:33:29,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 15:33:29,421 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 15:33:29,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 15:33:29,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 15:33:29,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 15:33:29,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 15:33:29,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 15:33:29,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 15:33:29,422 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 15:33:29,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 15:33:29,422 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 15:33:29,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 15:33:29,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 15:33:29,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 15:33:29,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 15:33:29,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 15:33:29,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:33:29,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 15:33:29,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 15:33:29,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 15:33:29,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 15:33:29,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 15:33:29,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 15:33:29,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 15:33:29,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 15:33:29,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 15:33:29,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 15:33:29,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 15:33:29,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 15:33:29,642 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 15:33:29,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-03-01 15:33:29,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d21239d73/558156fe6d5a465d8a384e284cee7d86/FLAG06ccbc34d [2022-03-01 15:33:30,077 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 15:33:30,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-03-01 15:33:30,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d21239d73/558156fe6d5a465d8a384e284cee7d86/FLAG06ccbc34d [2022-03-01 15:33:30,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d21239d73/558156fe6d5a465d8a384e284cee7d86 [2022-03-01 15:33:30,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 15:33:30,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 15:33:30,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 15:33:30,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 15:33:30,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 15:33:30,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d5b13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30, skipping insertion in model container [2022-03-01 15:33:30,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 15:33:30,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 15:33:30,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-03-01 15:33:30,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:33:30,736 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 15:33:30,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-03-01 15:33:30,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:33:30,777 INFO L208 MainTranslator]: Completed translation [2022-03-01 15:33:30,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30 WrapperNode [2022-03-01 15:33:30,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 15:33:30,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 15:33:30,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 15:33:30,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 15:33:30,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,811 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-03-01 15:33:30,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 15:33:30,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 15:33:30,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 15:33:30,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 15:33:30,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 15:33:30,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 15:33:30,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 15:33:30,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 15:33:30,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (1/1) ... [2022-03-01 15:33:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:33:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:30,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 15:33:30,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 15:33:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 15:33:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 15:33:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 15:33:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 15:33:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 15:33:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 15:33:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 15:33:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 15:33:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-01 15:33:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 15:33:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 15:33:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 15:33:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 15:33:30,915 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 15:33:30,982 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 15:33:30,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 15:33:31,265 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 15:33:31,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 15:33:31,275 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-01 15:33:31,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:33:31 BoogieIcfgContainer [2022-03-01 15:33:31,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 15:33:31,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 15:33:31,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 15:33:31,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 15:33:31,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 03:33:30" (1/3) ... [2022-03-01 15:33:31,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edb8e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:33:31, skipping insertion in model container [2022-03-01 15:33:31,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:33:30" (2/3) ... [2022-03-01 15:33:31,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edb8e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:33:31, skipping insertion in model container [2022-03-01 15:33:31,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:33:31" (3/3) ... [2022-03-01 15:33:31,284 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-03-01 15:33:31,288 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 15:33:31,288 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 15:33:31,288 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 15:33:31,288 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 15:33:31,339 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,339 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,340 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,340 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,340 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,341 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,341 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,342 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,342 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,343 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,343 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,343 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,343 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,344 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,344 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,346 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,346 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,349 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,350 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,350 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,350 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,350 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,351 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,351 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,357 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,357 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,362 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,362 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,363 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,363 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,363 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,364 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,364 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,364 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,367 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,367 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,369 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,369 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,372 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,372 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,373 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,373 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,373 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,374 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,374 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,375 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,382 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,383 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,385 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,386 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:33:31,389 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 15:33:31,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 15:33:31,448 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 15:33:31,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 15:33:31,464 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 228 places, 246 transitions, 508 flow [2022-03-01 15:33:31,691 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-01 15:33:31,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:31,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:31,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:31,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1888425211, now seen corresponding path program 1 times [2022-03-01 15:33:31,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:31,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902528966] [2022-03-01 15:33:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:32,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:32,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902528966] [2022-03-01 15:33:32,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902528966] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:32,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:32,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 15:33:32,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369265814] [2022-03-01 15:33:32,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:32,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 15:33:32,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 15:33:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:33:32,096 INFO L87 Difference]: Start difference. First operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:32,185 INFO L93 Difference]: Finished difference Result 5062 states and 14867 transitions. [2022-03-01 15:33:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 15:33:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-03-01 15:33:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:32,240 INFO L225 Difference]: With dead ends: 5062 [2022-03-01 15:33:32,240 INFO L226 Difference]: Without dead ends: 5055 [2022-03-01 15:33:32,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:33:32,245 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:32,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-03-01 15:33:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5055. [2022-03-01 15:33:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5054 states have (on average 2.9402453502176495) internal successors, (14860), 5054 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 14860 transitions. [2022-03-01 15:33:32,518 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 14860 transitions. Word has length 139 [2022-03-01 15:33:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:32,519 INFO L470 AbstractCegarLoop]: Abstraction has 5055 states and 14860 transitions. [2022-03-01 15:33:32,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 14860 transitions. [2022-03-01 15:33:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-01 15:33:32,535 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:32,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:32,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 15:33:32,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1099516835, now seen corresponding path program 1 times [2022-03-01 15:33:32,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:32,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414378512] [2022-03-01 15:33:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:32,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:32,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414378512] [2022-03-01 15:33:32,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414378512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:32,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:32,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 15:33:32,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971264844] [2022-03-01 15:33:32,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:32,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 15:33:32,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 15:33:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:32,740 INFO L87 Difference]: Start difference. First operand 5055 states and 14860 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:32,840 INFO L93 Difference]: Finished difference Result 5771 states and 16742 transitions. [2022-03-01 15:33:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 15:33:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-03-01 15:33:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:32,871 INFO L225 Difference]: With dead ends: 5771 [2022-03-01 15:33:32,871 INFO L226 Difference]: Without dead ends: 5771 [2022-03-01 15:33:32,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:32,874 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 99 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:32,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 433 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-03-01 15:33:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5194. [2022-03-01 15:33:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 5193 states have (on average 2.938571153475833) internal successors, (15260), 5193 states have internal predecessors, (15260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 15260 transitions. [2022-03-01 15:33:33,110 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 15260 transitions. Word has length 139 [2022-03-01 15:33:33,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:33,113 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 15260 transitions. [2022-03-01 15:33:33,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 15260 transitions. [2022-03-01 15:33:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-01 15:33:33,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:33,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:33,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 15:33:33,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash 689073211, now seen corresponding path program 1 times [2022-03-01 15:33:33,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:33,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883692848] [2022-03-01 15:33:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:33,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:33,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883692848] [2022-03-01 15:33:33,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883692848] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:33,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:33,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 15:33:33,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759940932] [2022-03-01 15:33:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:33,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 15:33:33,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 15:33:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:33,273 INFO L87 Difference]: Start difference. First operand 5194 states and 15260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:33,329 INFO L93 Difference]: Finished difference Result 6050 states and 17445 transitions. [2022-03-01 15:33:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 15:33:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-03-01 15:33:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:33,435 INFO L225 Difference]: With dead ends: 6050 [2022-03-01 15:33:33,435 INFO L226 Difference]: Without dead ends: 6050 [2022-03-01 15:33:33,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:33,436 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 88 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:33,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 436 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-03-01 15:33:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 5340. [2022-03-01 15:33:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 2.9363176624836114) internal successors, (15677), 5339 states have internal predecessors, (15677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 15677 transitions. [2022-03-01 15:33:33,602 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 15677 transitions. Word has length 140 [2022-03-01 15:33:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:33,603 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 15677 transitions. [2022-03-01 15:33:33,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 15677 transitions. [2022-03-01 15:33:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:33,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:33,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:33,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 15:33:33,619 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1007108905, now seen corresponding path program 1 times [2022-03-01 15:33:33,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:33,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822737163] [2022-03-01 15:33:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:34,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:34,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822737163] [2022-03-01 15:33:34,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822737163] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:34,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:34,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:33:34,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812990259] [2022-03-01 15:33:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:34,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:33:34,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:33:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:33:34,421 INFO L87 Difference]: Start difference. First operand 5340 states and 15677 transitions. Second operand has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:35,908 INFO L93 Difference]: Finished difference Result 17892 states and 52122 transitions. [2022-03-01 15:33:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:33:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:35,969 INFO L225 Difference]: With dead ends: 17892 [2022-03-01 15:33:35,970 INFO L226 Difference]: Without dead ends: 17721 [2022-03-01 15:33:35,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 15:33:35,971 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3616 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3616 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:35,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3616 Valid, 3192 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:33:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2022-03-01 15:33:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 9090. [2022-03-01 15:33:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9090 states, 9089 states have (on average 2.942457916162394) internal successors, (26744), 9089 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 26744 transitions. [2022-03-01 15:33:36,317 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 26744 transitions. Word has length 141 [2022-03-01 15:33:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:36,317 INFO L470 AbstractCegarLoop]: Abstraction has 9090 states and 26744 transitions. [2022-03-01 15:33:36,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 26744 transitions. [2022-03-01 15:33:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:36,339 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:36,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:36,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 15:33:36,340 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash -810308121, now seen corresponding path program 1 times [2022-03-01 15:33:36,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:36,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332351011] [2022-03-01 15:33:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:36,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:36,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332351011] [2022-03-01 15:33:36,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332351011] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:36,389 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:36,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 15:33:36,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911045056] [2022-03-01 15:33:36,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:36,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 15:33:36,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 15:33:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:36,390 INFO L87 Difference]: Start difference. First operand 9090 states and 26744 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:36,454 INFO L93 Difference]: Finished difference Result 9363 states and 26702 transitions. [2022-03-01 15:33:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 15:33:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:36,483 INFO L225 Difference]: With dead ends: 9363 [2022-03-01 15:33:36,483 INFO L226 Difference]: Without dead ends: 9363 [2022-03-01 15:33:36,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:36,484 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 92 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:36,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 376 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2022-03-01 15:33:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 9189. [2022-03-01 15:33:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9189 states, 9188 states have (on average 2.866238572050501) internal successors, (26335), 9188 states have internal predecessors, (26335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9189 states to 9189 states and 26335 transitions. [2022-03-01 15:33:36,813 INFO L78 Accepts]: Start accepts. Automaton has 9189 states and 26335 transitions. Word has length 141 [2022-03-01 15:33:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:36,814 INFO L470 AbstractCegarLoop]: Abstraction has 9189 states and 26335 transitions. [2022-03-01 15:33:36,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9189 states and 26335 transitions. [2022-03-01 15:33:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:36,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:36,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:36,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 15:33:36,835 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:36,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1850227483, now seen corresponding path program 1 times [2022-03-01 15:33:36,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:36,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509901329] [2022-03-01 15:33:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:36,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:36,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:36,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509901329] [2022-03-01 15:33:36,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509901329] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:36,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:36,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 15:33:36,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112211256] [2022-03-01 15:33:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:36,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 15:33:36,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 15:33:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:36,874 INFO L87 Difference]: Start difference. First operand 9189 states and 26335 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:36,931 INFO L93 Difference]: Finished difference Result 8228 states and 23405 transitions. [2022-03-01 15:33:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 15:33:36,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:36,958 INFO L225 Difference]: With dead ends: 8228 [2022-03-01 15:33:36,958 INFO L226 Difference]: Without dead ends: 8228 [2022-03-01 15:33:36,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:36,959 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 38 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:36,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 418 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-03-01 15:33:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8162. [2022-03-01 15:33:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8543070702119837) internal successors, (23294), 8161 states have internal predecessors, (23294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23294 transitions. [2022-03-01 15:33:37,319 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23294 transitions. Word has length 141 [2022-03-01 15:33:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:37,319 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23294 transitions. [2022-03-01 15:33:37,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23294 transitions. [2022-03-01 15:33:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:37,335 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:37,335 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] [2022-03-01 15:33:37,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 15:33:37,335 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 627322787, now seen corresponding path program 1 times [2022-03-01 15:33:37,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:37,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652232281] [2022-03-01 15:33:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:37,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:37,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652232281] [2022-03-01 15:33:37,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652232281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:37,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:37,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 15:33:37,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732858468] [2022-03-01 15:33:37,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:37,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 15:33:37,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 15:33:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:37,385 INFO L87 Difference]: Start difference. First operand 8162 states and 23294 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:37,438 INFO L93 Difference]: Finished difference Result 8443 states and 23912 transitions. [2022-03-01 15:33:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 15:33:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:37,465 INFO L225 Difference]: With dead ends: 8443 [2022-03-01 15:33:37,465 INFO L226 Difference]: Without dead ends: 8443 [2022-03-01 15:33:37,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 15:33:37,469 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 30 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:37,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 432 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2022-03-01 15:33:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 8261. [2022-03-01 15:33:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 8260 states have (on average 2.846852300242131) internal successors, (23515), 8260 states have internal predecessors, (23515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 23515 transitions. [2022-03-01 15:33:37,718 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 23515 transitions. Word has length 141 [2022-03-01 15:33:37,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:37,718 INFO L470 AbstractCegarLoop]: Abstraction has 8261 states and 23515 transitions. [2022-03-01 15:33:37,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 23515 transitions. [2022-03-01 15:33:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:37,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:37,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:37,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 15:33:37,735 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1619956611, now seen corresponding path program 1 times [2022-03-01 15:33:37,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:37,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292883447] [2022-03-01 15:33:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:37,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:37,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292883447] [2022-03-01 15:33:37,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292883447] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:37,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:37,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:37,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71777460] [2022-03-01 15:33:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:37,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:37,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:37,835 INFO L87 Difference]: Start difference. First operand 8261 states and 23515 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:38,027 INFO L93 Difference]: Finished difference Result 8550 states and 24135 transitions. [2022-03-01 15:33:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:33:38,028 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 [2022-03-01 15:33:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:38,053 INFO L225 Difference]: With dead ends: 8550 [2022-03-01 15:33:38,053 INFO L226 Difference]: Without dead ends: 8343 [2022-03-01 15:33:38,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:33:38,054 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 117 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:38,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1269 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2022-03-01 15:33:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8184. [2022-03-01 15:33:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8183 states have (on average 2.8502994011976046) internal successors, (23324), 8183 states have internal predecessors, (23324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 23324 transitions. [2022-03-01 15:33:38,284 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 23324 transitions. Word has length 141 [2022-03-01 15:33:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:38,284 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 23324 transitions. [2022-03-01 15:33:38,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 23324 transitions. [2022-03-01 15:33:38,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:38,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:38,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:38,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 15:33:38,305 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1621927651, now seen corresponding path program 2 times [2022-03-01 15:33:38,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:38,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048816126] [2022-03-01 15:33:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:38,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:38,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:38,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048816126] [2022-03-01 15:33:38,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048816126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:38,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:38,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:38,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565030917] [2022-03-01 15:33:38,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:38,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:38,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:38,419 INFO L87 Difference]: Start difference. First operand 8184 states and 23324 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:38,559 INFO L93 Difference]: Finished difference Result 8366 states and 23739 transitions. [2022-03-01 15:33:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:33:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:38,584 INFO L225 Difference]: With dead ends: 8366 [2022-03-01 15:33:38,584 INFO L226 Difference]: Without dead ends: 8259 [2022-03-01 15:33:38,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:38,585 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 49 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:38,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1197 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-03-01 15:33:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8188. [2022-03-01 15:33:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8187 states have (on average 2.8497618175155734) internal successors, (23331), 8187 states have internal predecessors, (23331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 23331 transitions. [2022-03-01 15:33:38,822 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 23331 transitions. Word has length 141 [2022-03-01 15:33:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:38,822 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 23331 transitions. [2022-03-01 15:33:38,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 23331 transitions. [2022-03-01 15:33:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:38,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:38,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:38,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 15:33:38,840 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1818903025, now seen corresponding path program 3 times [2022-03-01 15:33:38,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:38,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567625521] [2022-03-01 15:33:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:38,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:38,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567625521] [2022-03-01 15:33:38,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567625521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:38,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:38,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:38,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206044489] [2022-03-01 15:33:38,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:38,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:38,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:38,952 INFO L87 Difference]: Start difference. First operand 8188 states and 23331 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:39,129 INFO L93 Difference]: Finished difference Result 8340 states and 23672 transitions. [2022-03-01 15:33:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:33:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:39,155 INFO L225 Difference]: With dead ends: 8340 [2022-03-01 15:33:39,156 INFO L226 Difference]: Without dead ends: 8210 [2022-03-01 15:33:39,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:39,157 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 35 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:39,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1585 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-03-01 15:33:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8162. [2022-03-01 15:33:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8511211861291508) internal successors, (23268), 8161 states have internal predecessors, (23268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23268 transitions. [2022-03-01 15:33:39,413 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23268 transitions. Word has length 141 [2022-03-01 15:33:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:39,413 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23268 transitions. [2022-03-01 15:33:39,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23268 transitions. [2022-03-01 15:33:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:39,429 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:39,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:39,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 15:33:39,429 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1913029597, now seen corresponding path program 4 times [2022-03-01 15:33:39,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:39,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528806766] [2022-03-01 15:33:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:39,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:39,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528806766] [2022-03-01 15:33:39,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528806766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:39,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:39,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:39,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589691424] [2022-03-01 15:33:39,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:39,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:39,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:39,520 INFO L87 Difference]: Start difference. First operand 8162 states and 23268 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:39,674 INFO L93 Difference]: Finished difference Result 8502 states and 24043 transitions. [2022-03-01 15:33:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:33:39,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:39,701 INFO L225 Difference]: With dead ends: 8502 [2022-03-01 15:33:39,701 INFO L226 Difference]: Without dead ends: 8382 [2022-03-01 15:33:39,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-01 15:33:39,703 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 124 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:39,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1057 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2022-03-01 15:33:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 8226. [2022-03-01 15:33:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 8225 states have (on average 2.84887537993921) internal successors, (23432), 8225 states have internal predecessors, (23432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 23432 transitions. [2022-03-01 15:33:39,864 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 23432 transitions. Word has length 141 [2022-03-01 15:33:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:39,864 INFO L470 AbstractCegarLoop]: Abstraction has 8226 states and 23432 transitions. [2022-03-01 15:33:39,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 23432 transitions. [2022-03-01 15:33:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:39,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:39,878 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] [2022-03-01 15:33:39,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 15:33:39,878 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1405816603, now seen corresponding path program 5 times [2022-03-01 15:33:39,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:39,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843820699] [2022-03-01 15:33:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:39,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:39,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:39,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843820699] [2022-03-01 15:33:39,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843820699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:39,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:39,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:39,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964903396] [2022-03-01 15:33:39,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:39,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:39,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:39,995 INFO L87 Difference]: Start difference. First operand 8226 states and 23432 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:40,275 INFO L93 Difference]: Finished difference Result 8414 states and 23859 transitions. [2022-03-01 15:33:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:33:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:40,298 INFO L225 Difference]: With dead ends: 8414 [2022-03-01 15:33:40,298 INFO L226 Difference]: Without dead ends: 8307 [2022-03-01 15:33:40,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:33:40,299 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 59 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:40,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1160 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2022-03-01 15:33:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 8230. [2022-03-01 15:33:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8229 states have (on average 2.8483412322274884) internal successors, (23439), 8229 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 23439 transitions. [2022-03-01 15:33:40,487 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 23439 transitions. Word has length 141 [2022-03-01 15:33:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:40,488 INFO L470 AbstractCegarLoop]: Abstraction has 8230 states and 23439 transitions. [2022-03-01 15:33:40,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 23439 transitions. [2022-03-01 15:33:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:40,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:40,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:40,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 15:33:40,504 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1602791977, now seen corresponding path program 6 times [2022-03-01 15:33:40,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:40,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468073861] [2022-03-01 15:33:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:40,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:40,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:40,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468073861] [2022-03-01 15:33:40,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468073861] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:40,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:40,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:40,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675889436] [2022-03-01 15:33:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:40,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:40,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:40,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:40,627 INFO L87 Difference]: Start difference. First operand 8230 states and 23439 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:40,782 INFO L93 Difference]: Finished difference Result 8388 states and 23792 transitions. [2022-03-01 15:33:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:33:40,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:40,801 INFO L225 Difference]: With dead ends: 8388 [2022-03-01 15:33:40,802 INFO L226 Difference]: Without dead ends: 8254 [2022-03-01 15:33:40,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:40,803 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 48 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:40,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1178 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2022-03-01 15:33:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8200. [2022-03-01 15:33:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 2.849737772899134) internal successors, (23365), 8199 states have internal predecessors, (23365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 23365 transitions. [2022-03-01 15:33:41,044 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 23365 transitions. Word has length 141 [2022-03-01 15:33:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:41,045 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 23365 transitions. [2022-03-01 15:33:41,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 23365 transitions. [2022-03-01 15:33:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:41,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:41,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:41,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 15:33:41,061 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2098111613, now seen corresponding path program 1 times [2022-03-01 15:33:41,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:41,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150434668] [2022-03-01 15:33:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:41,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:41,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150434668] [2022-03-01 15:33:41,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150434668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:41,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:41,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:41,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269816293] [2022-03-01 15:33:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:41,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:41,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:41,186 INFO L87 Difference]: Start difference. First operand 8200 states and 23365 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:41,331 INFO L93 Difference]: Finished difference Result 8460 states and 23922 transitions. [2022-03-01 15:33:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:33:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:41,348 INFO L225 Difference]: With dead ends: 8460 [2022-03-01 15:33:41,348 INFO L226 Difference]: Without dead ends: 8340 [2022-03-01 15:33:41,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:33:41,349 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 112 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:41,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1044 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2022-03-01 15:33:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 8204. [2022-03-01 15:33:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8204 states, 8203 states have (on average 2.8468852858710227) internal successors, (23353), 8203 states have internal predecessors, (23353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 23353 transitions. [2022-03-01 15:33:41,504 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 23353 transitions. Word has length 141 [2022-03-01 15:33:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:41,505 INFO L470 AbstractCegarLoop]: Abstraction has 8204 states and 23353 transitions. [2022-03-01 15:33:41,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 23353 transitions. [2022-03-01 15:33:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:41,521 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:41,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:41,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 15:33:41,521 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:41,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1105477789, now seen corresponding path program 1 times [2022-03-01 15:33:41,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:41,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229756094] [2022-03-01 15:33:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:41,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:41,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:41,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229756094] [2022-03-01 15:33:41,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229756094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:41,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:41,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 15:33:41,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808342492] [2022-03-01 15:33:41,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:41,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 15:33:41,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:41,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 15:33:41,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:33:41,560 INFO L87 Difference]: Start difference. First operand 8204 states and 23353 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:41,624 INFO L93 Difference]: Finished difference Result 8223 states and 23294 transitions. [2022-03-01 15:33:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 15:33:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:41,642 INFO L225 Difference]: With dead ends: 8223 [2022-03-01 15:33:41,642 INFO L226 Difference]: Without dead ends: 8142 [2022-03-01 15:33:41,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:33:41,643 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 55 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:41,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 636 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2022-03-01 15:33:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8016. [2022-03-01 15:33:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 8015 states have (on average 2.8510293200249532) internal successors, (22851), 8015 states have internal predecessors, (22851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 22851 transitions. [2022-03-01 15:33:41,815 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 22851 transitions. Word has length 141 [2022-03-01 15:33:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 8016 states and 22851 transitions. [2022-03-01 15:33:41,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 22851 transitions. [2022-03-01 15:33:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:41,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:41,831 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] [2022-03-01 15:33:41,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-01 15:33:41,831 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash 54678179, now seen corresponding path program 2 times [2022-03-01 15:33:41,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:41,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549172649] [2022-03-01 15:33:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:41,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:41,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:41,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549172649] [2022-03-01 15:33:41,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549172649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:41,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:41,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:41,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581396538] [2022-03-01 15:33:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:41,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:41,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:41,942 INFO L87 Difference]: Start difference. First operand 8016 states and 22851 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:42,080 INFO L93 Difference]: Finished difference Result 8144 states and 23136 transitions. [2022-03-01 15:33:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:33:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:42,097 INFO L225 Difference]: With dead ends: 8144 [2022-03-01 15:33:42,097 INFO L226 Difference]: Without dead ends: 8043 [2022-03-01 15:33:42,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:42,098 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 49 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:42,098 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] [2022-03-01 15:33:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2022-03-01 15:33:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8020. [2022-03-01 15:33:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8020 states, 8019 states have (on average 2.850480109739369) internal successors, (22858), 8019 states have internal predecessors, (22858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 22858 transitions. [2022-03-01 15:33:42,266 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 22858 transitions. Word has length 141 [2022-03-01 15:33:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:42,266 INFO L470 AbstractCegarLoop]: Abstraction has 8020 states and 22858 transitions. [2022-03-01 15:33:42,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 22858 transitions. [2022-03-01 15:33:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:42,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:42,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:42,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 15:33:42,281 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash 251653553, now seen corresponding path program 3 times [2022-03-01 15:33:42,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:42,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253668543] [2022-03-01 15:33:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:42,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:42,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:42,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253668543] [2022-03-01 15:33:42,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253668543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:42,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:42,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:42,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232801515] [2022-03-01 15:33:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:42,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:42,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:42,393 INFO L87 Difference]: Start difference. First operand 8020 states and 22858 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:42,557 INFO L93 Difference]: Finished difference Result 8118 states and 23069 transitions. [2022-03-01 15:33:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:33:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:42,575 INFO L225 Difference]: With dead ends: 8118 [2022-03-01 15:33:42,575 INFO L226 Difference]: Without dead ends: 7994 [2022-03-01 15:33:42,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:42,576 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 39 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:42,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1153 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:42,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2022-03-01 15:33:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 7994. [2022-03-01 15:33:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7994 states, 7993 states have (on average 2.851870386588265) internal successors, (22795), 7993 states have internal predecessors, (22795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 22795 transitions. [2022-03-01 15:33:42,738 INFO L78 Accepts]: Start accepts. Automaton has 7994 states and 22795 transitions. Word has length 141 [2022-03-01 15:33:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:42,738 INFO L470 AbstractCegarLoop]: Abstraction has 7994 states and 22795 transitions. [2022-03-01 15:33:42,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7994 states and 22795 transitions. [2022-03-01 15:33:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:42,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:42,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:42,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-01 15:33:42,754 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash 215087779, now seen corresponding path program 4 times [2022-03-01 15:33:42,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:42,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481140177] [2022-03-01 15:33:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:42,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:42,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:42,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481140177] [2022-03-01 15:33:42,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481140177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:42,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:42,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:42,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538878031] [2022-03-01 15:33:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:42,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:42,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:42,860 INFO L87 Difference]: Start difference. First operand 7994 states and 22795 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:43,041 INFO L93 Difference]: Finished difference Result 8308 states and 23493 transitions. [2022-03-01 15:33:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:33:43,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:43,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:43,059 INFO L225 Difference]: With dead ends: 8308 [2022-03-01 15:33:43,059 INFO L226 Difference]: Without dead ends: 8146 [2022-03-01 15:33:43,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-03-01 15:33:43,061 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 109 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:43,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1593 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-03-01 15:33:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8010. [2022-03-01 15:33:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8010 states, 8009 states have (on average 2.849669122237483) internal successors, (22823), 8009 states have internal predecessors, (22823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 22823 transitions. [2022-03-01 15:33:43,230 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 22823 transitions. Word has length 141 [2022-03-01 15:33:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:43,230 INFO L470 AbstractCegarLoop]: Abstraction has 8010 states and 22823 transitions. [2022-03-01 15:33:43,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 22823 transitions. [2022-03-01 15:33:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:43,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:43,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:43,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-01 15:33:43,246 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:43,246 INFO L85 PathProgramCache]: Analyzing trace with hash -934606403, now seen corresponding path program 5 times [2022-03-01 15:33:43,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:43,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546795672] [2022-03-01 15:33:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:43,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:43,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:43,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546795672] [2022-03-01 15:33:43,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546795672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:43,338 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:43,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:43,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795248032] [2022-03-01 15:33:43,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:43,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:43,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:43,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:43,340 INFO L87 Difference]: Start difference. First operand 8010 states and 22823 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:43,498 INFO L93 Difference]: Finished difference Result 8138 states and 23108 transitions. [2022-03-01 15:33:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:33:43,499 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 [2022-03-01 15:33:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:43,515 INFO L225 Difference]: With dead ends: 8138 [2022-03-01 15:33:43,515 INFO L226 Difference]: Without dead ends: 8037 [2022-03-01 15:33:43,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:43,516 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 52 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:43,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1132 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2022-03-01 15:33:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 8014. [2022-03-01 15:33:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8014 states, 8013 states have (on average 2.8491201797079744) internal successors, (22830), 8013 states have internal predecessors, (22830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8014 states to 8014 states and 22830 transitions. [2022-03-01 15:33:43,658 INFO L78 Accepts]: Start accepts. Automaton has 8014 states and 22830 transitions. Word has length 141 [2022-03-01 15:33:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:43,658 INFO L470 AbstractCegarLoop]: Abstraction has 8014 states and 22830 transitions. [2022-03-01 15:33:43,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8014 states and 22830 transitions. [2022-03-01 15:33:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:43,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:43,670 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] [2022-03-01 15:33:43,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-01 15:33:43,671 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:43,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash -737631029, now seen corresponding path program 6 times [2022-03-01 15:33:43,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:43,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492242153] [2022-03-01 15:33:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:43,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:43,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492242153] [2022-03-01 15:33:43,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492242153] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:43,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:43,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:33:43,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542653954] [2022-03-01 15:33:43,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:43,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:33:43,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:33:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:33:43,780 INFO L87 Difference]: Start difference. First operand 8014 states and 22830 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:43,908 INFO L93 Difference]: Finished difference Result 8112 states and 23041 transitions. [2022-03-01 15:33:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:33:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:43,926 INFO L225 Difference]: With dead ends: 8112 [2022-03-01 15:33:43,927 INFO L226 Difference]: Without dead ends: 7960 [2022-03-01 15:33:43,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:33:43,928 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 47 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:43,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 930 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-03-01 15:33:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7960. [2022-03-01 15:33:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 7959 states have (on average 2.851865812287976) internal successors, (22698), 7959 states have internal predecessors, (22698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 22698 transitions. [2022-03-01 15:33:44,083 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 22698 transitions. Word has length 141 [2022-03-01 15:33:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:44,083 INFO L470 AbstractCegarLoop]: Abstraction has 7960 states and 22698 transitions. [2022-03-01 15:33:44,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:44,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 22698 transitions. [2022-03-01 15:33:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 15:33:44,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:44,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:44,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-01 15:33:44,095 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1753409837, now seen corresponding path program 2 times [2022-03-01 15:33:44,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:44,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746547488] [2022-03-01 15:33:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:44,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:44,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:44,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746547488] [2022-03-01 15:33:44,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746547488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:44,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:44,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 15:33:44,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128359670] [2022-03-01 15:33:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:44,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 15:33:44,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 15:33:44,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:33:44,136 INFO L87 Difference]: Start difference. First operand 7960 states and 22698 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:44,187 INFO L93 Difference]: Finished difference Result 7843 states and 22383 transitions. [2022-03-01 15:33:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 15:33:44,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 15:33:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:44,205 INFO L225 Difference]: With dead ends: 7843 [2022-03-01 15:33:44,205 INFO L226 Difference]: Without dead ends: 7745 [2022-03-01 15:33:44,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:33:44,206 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 16 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:44,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 423 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:33:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2022-03-01 15:33:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7745. [2022-03-01 15:33:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 7744 states have (on average 2.8574380165289255) internal successors, (22128), 7744 states have internal predecessors, (22128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 22128 transitions. [2022-03-01 15:33:44,372 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 22128 transitions. Word has length 141 [2022-03-01 15:33:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:44,372 INFO L470 AbstractCegarLoop]: Abstraction has 7745 states and 22128 transitions. [2022-03-01 15:33:44,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 22128 transitions. [2022-03-01 15:33:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 15:33:44,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:44,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:44,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-01 15:33:44,388 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1986433718, now seen corresponding path program 1 times [2022-03-01 15:33:44,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:44,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326157611] [2022-03-01 15:33:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:44,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:44,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326157611] [2022-03-01 15:33:44,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326157611] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:44,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069501474] [2022-03-01 15:33:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:44,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:44,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:44,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:44,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 15:33:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:44,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 15:33:44,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:45,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:33:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:46,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069501474] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:46,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:33:46,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-03-01 15:33:46,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176176470] [2022-03-01 15:33:46,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:46,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 15:33:46,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 15:33:46,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-03-01 15:33:46,008 INFO L87 Difference]: Start difference. First operand 7745 states and 22128 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:46,517 INFO L93 Difference]: Finished difference Result 13005 states and 36572 transitions. [2022-03-01 15:33:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:33:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-01 15:33:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:46,546 INFO L225 Difference]: With dead ends: 13005 [2022-03-01 15:33:46,546 INFO L226 Difference]: Without dead ends: 12924 [2022-03-01 15:33:46,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:33:46,548 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 878 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:46,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 2533 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:33:46,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-03-01 15:33:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 9243. [2022-03-01 15:33:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9242 states have (on average 2.8779484959965376) internal successors, (26598), 9242 states have internal predecessors, (26598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 26598 transitions. [2022-03-01 15:33:46,806 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 26598 transitions. Word has length 148 [2022-03-01 15:33:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:46,807 INFO L470 AbstractCegarLoop]: Abstraction has 9243 states and 26598 transitions. [2022-03-01 15:33:46,807 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) [2022-03-01 15:33:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 26598 transitions. [2022-03-01 15:33:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 15:33:46,819 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:46,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:46,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 15:33:47,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-01 15:33:47,020 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1487913134, now seen corresponding path program 2 times [2022-03-01 15:33:47,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:47,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127316060] [2022-03-01 15:33:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:47,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:47,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127316060] [2022-03-01 15:33:47,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127316060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:47,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602168977] [2022-03-01 15:33:47,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:33:47,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:47,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:47,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:47,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 15:33:47,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-01 15:33:47,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:33:47,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 15:33:47,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:48,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:33:48,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602168977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:48,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:33:48,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 28 [2022-03-01 15:33:48,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222038246] [2022-03-01 15:33:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:48,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 15:33:48,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 15:33:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-01 15:33:48,160 INFO L87 Difference]: Start difference. First operand 9243 states and 26598 transitions. Second operand has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:49,044 INFO L93 Difference]: Finished difference Result 10514 states and 29630 transitions. [2022-03-01 15:33:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 15:33:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-01 15:33:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:49,064 INFO L225 Difference]: With dead ends: 10514 [2022-03-01 15:33:49,064 INFO L226 Difference]: Without dead ends: 10411 [2022-03-01 15:33:49,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:33:49,065 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 995 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:49,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2430 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:33:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2022-03-01 15:33:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 7793. [2022-03-01 15:33:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7792 states have (on average 2.8488193018480494) internal successors, (22198), 7792 states have internal predecessors, (22198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 22198 transitions. [2022-03-01 15:33:49,262 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 22198 transitions. Word has length 148 [2022-03-01 15:33:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:49,262 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 22198 transitions. [2022-03-01 15:33:49,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 22198 transitions. [2022-03-01 15:33:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 15:33:49,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:49,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:49,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-01 15:33:49,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-01 15:33:49,472 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:49,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2133376293, now seen corresponding path program 1 times [2022-03-01 15:33:49,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:49,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757652964] [2022-03-01 15:33:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:49,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:49,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:49,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757652964] [2022-03-01 15:33:49,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757652964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:49,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042290711] [2022-03-01 15:33:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:49,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:49,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:49,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:49,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 15:33:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:49,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 15:33:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:50,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:33:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:50,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042290711] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:50,826 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:33:50,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-03-01 15:33:50,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547672647] [2022-03-01 15:33:50,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:50,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 15:33:50,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:50,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 15:33:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-03-01 15:33:50,828 INFO L87 Difference]: Start difference. First operand 7793 states and 22198 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:51,242 INFO L93 Difference]: Finished difference Result 13053 states and 36642 transitions. [2022-03-01 15:33:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:33:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-01 15:33:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:51,263 INFO L225 Difference]: With dead ends: 13053 [2022-03-01 15:33:51,264 INFO L226 Difference]: Without dead ends: 12966 [2022-03-01 15:33:51,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:33:51,265 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 964 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:51,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 2858 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:33:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-03-01 15:33:51,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 10881. [2022-03-01 15:33:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10881 states, 10880 states have (on average 2.8889705882352943) internal successors, (31432), 10880 states have internal predecessors, (31432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10881 states to 10881 states and 31432 transitions. [2022-03-01 15:33:51,421 INFO L78 Accepts]: Start accepts. Automaton has 10881 states and 31432 transitions. Word has length 148 [2022-03-01 15:33:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:51,421 INFO L470 AbstractCegarLoop]: Abstraction has 10881 states and 31432 transitions. [2022-03-01 15:33:51,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:51,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 31432 transitions. [2022-03-01 15:33:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 15:33:51,435 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:51,435 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] [2022-03-01 15:33:51,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-01 15:33:51,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:51,636 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1663070419, now seen corresponding path program 2 times [2022-03-01 15:33:51,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:51,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002813710] [2022-03-01 15:33:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:51,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:51,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:51,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002813710] [2022-03-01 15:33:51,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002813710] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:51,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943804907] [2022-03-01 15:33:51,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:33:51,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:51,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:51,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 15:33:51,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-01 15:33:51,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:33:51,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 15:33:51,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:52,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:33:52,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943804907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:52,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:33:52,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2022-03-01 15:33:52,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721307831] [2022-03-01 15:33:52,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:52,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 15:33:52,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:52,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 15:33:52,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:33:52,436 INFO L87 Difference]: Start difference. First operand 10881 states and 31432 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:52,895 INFO L93 Difference]: Finished difference Result 11334 states and 32482 transitions. [2022-03-01 15:33:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:33:52,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-01 15:33:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:52,913 INFO L225 Difference]: With dead ends: 11334 [2022-03-01 15:33:52,913 INFO L226 Difference]: Without dead ends: 11231 [2022-03-01 15:33:52,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:33:52,914 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 426 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:52,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1533 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2022-03-01 15:33:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 7794. [2022-03-01 15:33:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7794 states, 7793 states have (on average 2.847683818811754) internal successors, (22192), 7793 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 22192 transitions. [2022-03-01 15:33:53,029 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 22192 transitions. Word has length 148 [2022-03-01 15:33:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:53,029 INFO L470 AbstractCegarLoop]: Abstraction has 7794 states and 22192 transitions. [2022-03-01 15:33:53,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 22192 transitions. [2022-03-01 15:33:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-01 15:33:53,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:53,039 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] [2022-03-01 15:33:53,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 15:33:53,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:53,261 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:53,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2060043732, now seen corresponding path program 1 times [2022-03-01 15:33:53,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:53,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245418637] [2022-03-01 15:33:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:53,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:53,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245418637] [2022-03-01 15:33:53,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245418637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:53,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:53,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 15:33:53,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637422433] [2022-03-01 15:33:53,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:53,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 15:33:53,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:53,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 15:33:53,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:33:53,325 INFO L87 Difference]: Start difference. First operand 7794 states and 22192 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:53,443 INFO L93 Difference]: Finished difference Result 9154 states and 25619 transitions. [2022-03-01 15:33:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 15:33:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-01 15:33:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:53,460 INFO L225 Difference]: With dead ends: 9154 [2022-03-01 15:33:53,460 INFO L226 Difference]: Without dead ends: 9032 [2022-03-01 15:33:53,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:33:53,462 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 220 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:53,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1059 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2022-03-01 15:33:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 8431. [2022-03-01 15:33:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8431 states, 8430 states have (on average 2.82502965599051) internal successors, (23815), 8430 states have internal predecessors, (23815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 23815 transitions. [2022-03-01 15:33:53,573 INFO L78 Accepts]: Start accepts. Automaton has 8431 states and 23815 transitions. Word has length 154 [2022-03-01 15:33:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:53,573 INFO L470 AbstractCegarLoop]: Abstraction has 8431 states and 23815 transitions. [2022-03-01 15:33:53,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8431 states and 23815 transitions. [2022-03-01 15:33:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-01 15:33:53,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:53,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:53,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-01 15:33:53,584 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:53,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash -174767826, now seen corresponding path program 1 times [2022-03-01 15:33:53,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:53,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641139971] [2022-03-01 15:33:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:53,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:53,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641139971] [2022-03-01 15:33:53,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641139971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:53,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:53,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 15:33:53,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117478136] [2022-03-01 15:33:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:53,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 15:33:53,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 15:33:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:33:53,647 INFO L87 Difference]: Start difference. First operand 8431 states and 23815 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:53,767 INFO L93 Difference]: Finished difference Result 7976 states and 22592 transitions. [2022-03-01 15:33:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 15:33:53,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-01 15:33:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:53,778 INFO L225 Difference]: With dead ends: 7976 [2022-03-01 15:33:53,778 INFO L226 Difference]: Without dead ends: 7766 [2022-03-01 15:33:53,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:33:53,779 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 132 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:53,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1058 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2022-03-01 15:33:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7761. [2022-03-01 15:33:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7761 states, 7760 states have (on average 2.855283505154639) internal successors, (22157), 7760 states have internal predecessors, (22157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 22157 transitions. [2022-03-01 15:33:53,887 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 22157 transitions. Word has length 154 [2022-03-01 15:33:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:53,887 INFO L470 AbstractCegarLoop]: Abstraction has 7761 states and 22157 transitions. [2022-03-01 15:33:53,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 22157 transitions. [2022-03-01 15:33:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-03-01 15:33:53,896 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:53,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:53,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-01 15:33:53,896 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2131040572, now seen corresponding path program 1 times [2022-03-01 15:33:53,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:53,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472402498] [2022-03-01 15:33:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:54,035 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:54,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472402498] [2022-03-01 15:33:54,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472402498] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:54,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453601625] [2022-03-01 15:33:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:54,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:54,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:54,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:54,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 15:33:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:54,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-01 15:33:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:54,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:33:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:33:55,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453601625] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:55,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:33:55,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-03-01 15:33:55,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604880044] [2022-03-01 15:33:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:55,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 15:33:55,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 15:33:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:33:55,017 INFO L87 Difference]: Start difference. First operand 7761 states and 22157 transitions. Second operand has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:55,254 INFO L93 Difference]: Finished difference Result 9967 states and 27609 transitions. [2022-03-01 15:33:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 15:33:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-03-01 15:33:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:55,270 INFO L225 Difference]: With dead ends: 9967 [2022-03-01 15:33:55,270 INFO L226 Difference]: Without dead ends: 9967 [2022-03-01 15:33:55,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:33:55,270 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1131 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:55,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1024 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-03-01 15:33:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 7947. [2022-03-01 15:33:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 2.8492323181474957) internal successors, (22640), 7946 states have internal predecessors, (22640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 22640 transitions. [2022-03-01 15:33:55,388 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 22640 transitions. Word has length 155 [2022-03-01 15:33:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:55,388 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 22640 transitions. [2022-03-01 15:33:55,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 22640 transitions. [2022-03-01 15:33:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-01 15:33:55,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:55,398 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] [2022-03-01 15:33:55,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-01 15:33:55,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-01 15:33:55,599 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1234806942, now seen corresponding path program 1 times [2022-03-01 15:33:55,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:55,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424002258] [2022-03-01 15:33:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:55,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:55,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424002258] [2022-03-01 15:33:55,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424002258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:55,660 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:55,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 15:33:55,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745755572] [2022-03-01 15:33:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:55,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 15:33:55,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 15:33:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:33:55,661 INFO L87 Difference]: Start difference. First operand 7947 states and 22640 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:55,780 INFO L93 Difference]: Finished difference Result 5780 states and 15833 transitions. [2022-03-01 15:33:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 15:33:55,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-01 15:33:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:55,791 INFO L225 Difference]: With dead ends: 5780 [2022-03-01 15:33:55,791 INFO L226 Difference]: Without dead ends: 5658 [2022-03-01 15:33:55,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:33:55,792 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 625 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:55,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 795 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2022-03-01 15:33:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5257. [2022-03-01 15:33:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 2.776826484018265) internal successors, (14595), 5256 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 14595 transitions. [2022-03-01 15:33:55,875 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 14595 transitions. Word has length 161 [2022-03-01 15:33:55,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:55,876 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 14595 transitions. [2022-03-01 15:33:55,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 14595 transitions. [2022-03-01 15:33:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-01 15:33:55,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:55,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:55,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-01 15:33:55,884 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:55,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash 825348796, now seen corresponding path program 1 times [2022-03-01 15:33:55,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:55,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057561927] [2022-03-01 15:33:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:55,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:55,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057561927] [2022-03-01 15:33:55,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057561927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:33:55,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:33:55,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 15:33:55,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805577789] [2022-03-01 15:33:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:55,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 15:33:55,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 15:33:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:33:55,949 INFO L87 Difference]: Start difference. First operand 5257 states and 14595 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:56,049 INFO L93 Difference]: Finished difference Result 4602 states and 12806 transitions. [2022-03-01 15:33:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 15:33:56,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-01 15:33:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:56,056 INFO L225 Difference]: With dead ends: 4602 [2022-03-01 15:33:56,056 INFO L226 Difference]: Without dead ends: 4425 [2022-03-01 15:33:56,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:33:56,056 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 369 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:33:56,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 832 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:33:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-03-01 15:33:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4420. [2022-03-01 15:33:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 2.807196198234895) internal successors, (12405), 4419 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 12405 transitions. [2022-03-01 15:33:56,103 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 12405 transitions. Word has length 161 [2022-03-01 15:33:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:56,103 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 12405 transitions. [2022-03-01 15:33:56,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 12405 transitions. [2022-03-01 15:33:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-01 15:33:56,108 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:56,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:56,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-01 15:33:56,109 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2054720919, now seen corresponding path program 1 times [2022-03-01 15:33:56,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:56,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343076685] [2022-03-01 15:33:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:56,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:56,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343076685] [2022-03-01 15:33:56,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343076685] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:56,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923082529] [2022-03-01 15:33:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:56,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:56,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:56,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:56,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 15:33:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:56,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-01 15:33:56,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:56,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:33:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:57,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923082529] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:57,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:33:57,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-03-01 15:33:57,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105598151] [2022-03-01 15:33:57,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:33:57,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 15:33:57,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:33:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 15:33:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:33:57,264 INFO L87 Difference]: Start difference. First operand 4420 states and 12405 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:33:57,450 INFO L93 Difference]: Finished difference Result 5196 states and 14341 transitions. [2022-03-01 15:33:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:33:57,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-03-01 15:33:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:33:57,457 INFO L225 Difference]: With dead ends: 5196 [2022-03-01 15:33:57,457 INFO L226 Difference]: Without dead ends: 5196 [2022-03-01 15:33:57,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:33:57,458 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 [2022-03-01 15:33:57,458 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] [2022-03-01 15:33:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2022-03-01 15:33:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4550. [2022-03-01 15:33:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4549 states have (on average 2.807210375906793) internal successors, (12770), 4549 states have internal predecessors, (12770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 12770 transitions. [2022-03-01 15:33:57,614 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 12770 transitions. Word has length 164 [2022-03-01 15:33:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:33:57,614 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 12770 transitions. [2022-03-01 15:33:57,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:33:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 12770 transitions. [2022-03-01 15:33:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-03-01 15:33:57,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:33:57,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:33:57,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-01 15:33:57,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:57,835 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:33:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:33:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1659523190, now seen corresponding path program 1 times [2022-03-01 15:33:57,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:33:57,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881534453] [2022-03-01 15:33:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:33:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:33:58,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:33:58,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881534453] [2022-03-01 15:33:58,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881534453] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:33:58,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534867017] [2022-03-01 15:33:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:33:58,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:33:58,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:33:58,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:33:58,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 15:33:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:33:58,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-01 15:33:58,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:33:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:33:59,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:34:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:00,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534867017] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:34:00,475 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:34:00,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 46 [2022-03-01 15:34:00,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021709954] [2022-03-01 15:34:00,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:34:00,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 15:34:00,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:00,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 15:34:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:34:00,477 INFO L87 Difference]: Start difference. First operand 4550 states and 12770 transitions. Second operand has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:02,294 INFO L93 Difference]: Finished difference Result 18134 states and 50616 transitions. [2022-03-01 15:34:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 15:34:02,294 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-03-01 15:34:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:02,326 INFO L225 Difference]: With dead ends: 18134 [2022-03-01 15:34:02,326 INFO L226 Difference]: Without dead ends: 17924 [2022-03-01 15:34:02,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 319 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1157, Invalid=4849, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:34:02,328 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 2375 mSDsluCounter, 7334 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:02,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 7423 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:34:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2022-03-01 15:34:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 8265. [2022-03-01 15:34:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 2.8457163601161666) internal successors, (23517), 8264 states have internal predecessors, (23517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 23517 transitions. [2022-03-01 15:34:02,515 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 23517 transitions. Word has length 173 [2022-03-01 15:34:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:02,515 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 23517 transitions. [2022-03-01 15:34:02,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 23517 transitions. [2022-03-01 15:34:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:02,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:02,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:02,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 15:34:02,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:34:02,727 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:02,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash -130323262, now seen corresponding path program 1 times [2022-03-01 15:34:02,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:02,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087756731] [2022-03-01 15:34:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:03,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:03,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087756731] [2022-03-01 15:34:03,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087756731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:03,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:03,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:03,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486051952] [2022-03-01 15:34:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:03,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:03,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:03,134 INFO L87 Difference]: Start difference. First operand 8265 states and 23517 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:03,912 INFO L93 Difference]: Finished difference Result 20121 states and 57525 transitions. [2022-03-01 15:34:03,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:34:03,912 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:03,949 INFO L225 Difference]: With dead ends: 20121 [2022-03-01 15:34:03,949 INFO L226 Difference]: Without dead ends: 20121 [2022-03-01 15:34:03,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=429, Invalid=1293, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:34:03,950 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1371 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:03,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 3715 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2022-03-01 15:34:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 8909. [2022-03-01 15:34:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 2.8431746744499327) internal successors, (25327), 8908 states have internal predecessors, (25327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 25327 transitions. [2022-03-01 15:34:04,140 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 25327 transitions. Word has length 177 [2022-03-01 15:34:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:04,140 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 25327 transitions. [2022-03-01 15:34:04,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 25327 transitions. [2022-03-01 15:34:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:04,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:04,152 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] [2022-03-01 15:34:04,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-01 15:34:04,152 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash 778847230, now seen corresponding path program 1 times [2022-03-01 15:34:04,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:04,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208321588] [2022-03-01 15:34:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:04,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:04,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208321588] [2022-03-01 15:34:04,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208321588] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:34:04,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979751108] [2022-03-01 15:34:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:04,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:34:04,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:34:04,510 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:34:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 15:34:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:04,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-01 15:34:04,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:34:05,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:34:05,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-01 15:34:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:05,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:34:05,431 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-01 15:34:05,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-03-01 15:34:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:05,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979751108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:34:05,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:34:05,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-01 15:34:05,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709388889] [2022-03-01 15:34:05,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:34:05,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:34:05,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:34:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:34:05,595 INFO L87 Difference]: Start difference. First operand 8909 states and 25327 transitions. Second operand has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:07,537 INFO L93 Difference]: Finished difference Result 29545 states and 84669 transitions. [2022-03-01 15:34:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 15:34:07,537 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:07,608 INFO L225 Difference]: With dead ends: 29545 [2022-03-01 15:34:07,608 INFO L226 Difference]: Without dead ends: 29545 [2022-03-01 15:34:07,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1050, Invalid=3920, Unknown=0, NotChecked=0, Total=4970 [2022-03-01 15:34:07,609 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1992 mSDsluCounter, 6697 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:07,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 7122 Invalid, 2254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1618 Invalid, 0 Unknown, 614 Unchecked, 0.8s Time] [2022-03-01 15:34:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29545 states. [2022-03-01 15:34:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29545 to 11625. [2022-03-01 15:34:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11625 states, 11624 states have (on average 2.8681176875430143) internal successors, (33339), 11624 states have internal predecessors, (33339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 33339 transitions. [2022-03-01 15:34:07,921 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 33339 transitions. Word has length 177 [2022-03-01 15:34:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:07,921 INFO L470 AbstractCegarLoop]: Abstraction has 11625 states and 33339 transitions. [2022-03-01 15:34:07,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 33339 transitions. [2022-03-01 15:34:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:07,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:07,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:07,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 15:34:08,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-01 15:34:08,138 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:08,138 INFO L85 PathProgramCache]: Analyzing trace with hash 466177484, now seen corresponding path program 2 times [2022-03-01 15:34:08,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:08,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173316611] [2022-03-01 15:34:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:08,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:08,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173316611] [2022-03-01 15:34:08,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173316611] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:08,663 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:08,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:08,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483081986] [2022-03-01 15:34:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:08,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:08,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:08,664 INFO L87 Difference]: Start difference. First operand 11625 states and 33339 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:09,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:09,328 INFO L93 Difference]: Finished difference Result 23067 states and 66157 transitions. [2022-03-01 15:34:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:34:09,328 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:09,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:09,386 INFO L225 Difference]: With dead ends: 23067 [2022-03-01 15:34:09,387 INFO L226 Difference]: Without dead ends: 23067 [2022-03-01 15:34:09,387 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 [2022-03-01 15:34:09,388 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1049 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:09,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 3223 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23067 states. [2022-03-01 15:34:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23067 to 11799. [2022-03-01 15:34:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11799 states, 11798 states have (on average 2.8687065604339717) internal successors, (33845), 11798 states have internal predecessors, (33845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 33845 transitions. [2022-03-01 15:34:09,702 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 33845 transitions. Word has length 177 [2022-03-01 15:34:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:09,703 INFO L470 AbstractCegarLoop]: Abstraction has 11799 states and 33845 transitions. [2022-03-01 15:34:09,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 33845 transitions. [2022-03-01 15:34:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:09,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:09,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:09,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-01 15:34:09,718 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash -586655790, now seen corresponding path program 2 times [2022-03-01 15:34:09,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:09,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048885741] [2022-03-01 15:34:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:10,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:10,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048885741] [2022-03-01 15:34:10,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048885741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:10,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:10,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:10,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653344803] [2022-03-01 15:34:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:10,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:10,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:10,164 INFO L87 Difference]: Start difference. First operand 11799 states and 33845 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:10,824 INFO L93 Difference]: Finished difference Result 23171 states and 66451 transitions. [2022-03-01 15:34:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:34:10,825 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:10,860 INFO L225 Difference]: With dead ends: 23171 [2022-03-01 15:34:10,860 INFO L226 Difference]: Without dead ends: 23171 [2022-03-01 15:34:10,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 15:34:10,861 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1123 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:10,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3109 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23171 states. [2022-03-01 15:34:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23171 to 12037. [2022-03-01 15:34:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-01 15:34:11,131 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-01 15:34:11,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:11,131 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-01 15:34:11,131 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) [2022-03-01 15:34:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-01 15:34:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:11,146 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:11,146 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] [2022-03-01 15:34:11,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-01 15:34:11,146 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -859187188, now seen corresponding path program 3 times [2022-03-01 15:34:11,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:11,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311300485] [2022-03-01 15:34:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:11,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:11,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311300485] [2022-03-01 15:34:11,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311300485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:11,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:11,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:11,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843293579] [2022-03-01 15:34:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:11,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:11,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:11,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:11,551 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:12,132 INFO L93 Difference]: Finished difference Result 23085 states and 66203 transitions. [2022-03-01 15:34:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:12,262 INFO L225 Difference]: With dead ends: 23085 [2022-03-01 15:34:12,262 INFO L226 Difference]: Without dead ends: 23085 [2022-03-01 15:34:12,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:34:12,263 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1168 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:12,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2739 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2022-03-01 15:34:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 12037. [2022-03-01 15:34:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-01 15:34:12,539 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-01 15:34:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:12,539 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-01 15:34:12,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-01 15:34:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:12,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:12,554 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] [2022-03-01 15:34:12,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-01 15:34:12,554 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:12,555 INFO L85 PathProgramCache]: Analyzing trace with hash -395612446, now seen corresponding path program 1 times [2022-03-01 15:34:12,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:12,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225522667] [2022-03-01 15:34:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:12,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:12,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:12,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225522667] [2022-03-01 15:34:12,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225522667] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:12,958 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:12,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:12,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132291143] [2022-03-01 15:34:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:12,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:12,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:12,960 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:13,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:13,707 INFO L93 Difference]: Finished difference Result 23197 states and 66527 transitions. [2022-03-01 15:34:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:13,708 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:13,761 INFO L225 Difference]: With dead ends: 23197 [2022-03-01 15:34:13,761 INFO L226 Difference]: Without dead ends: 23197 [2022-03-01 15:34:13,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:34:13,762 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1137 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:13,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 4134 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2022-03-01 15:34:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 12037. [2022-03-01 15:34:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-01 15:34:14,024 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-01 15:34:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:14,024 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-01 15:34:14,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-01 15:34:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:14,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:14,040 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] [2022-03-01 15:34:14,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-01 15:34:14,040 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1801101254, now seen corresponding path program 4 times [2022-03-01 15:34:14,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:14,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675310690] [2022-03-01 15:34:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:14,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:14,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675310690] [2022-03-01 15:34:14,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675310690] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:14,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:14,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:14,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57725641] [2022-03-01 15:34:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:14,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:14,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:14,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:14,443 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:15,211 INFO L93 Difference]: Finished difference Result 23477 states and 67305 transitions. [2022-03-01 15:34:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:34:15,211 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 [2022-03-01 15:34:15,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:15,252 INFO L225 Difference]: With dead ends: 23477 [2022-03-01 15:34:15,252 INFO L226 Difference]: Without dead ends: 23477 [2022-03-01 15:34:15,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:34:15,253 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 927 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:15,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 3381 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2022-03-01 15:34:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 12021. [2022-03-01 15:34:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 12020 states have (on average 2.8681364392678868) internal successors, (34475), 12020 states have internal predecessors, (34475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 34475 transitions. [2022-03-01 15:34:15,586 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 34475 transitions. Word has length 177 [2022-03-01 15:34:15,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:15,587 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 34475 transitions. [2022-03-01 15:34:15,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 34475 transitions. [2022-03-01 15:34:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:15,608 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:15,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:15,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-01 15:34:15,608 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2095983646, now seen corresponding path program 2 times [2022-03-01 15:34:15,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:15,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419797681] [2022-03-01 15:34:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:16,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:16,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419797681] [2022-03-01 15:34:16,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419797681] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:16,043 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:16,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:16,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117765665] [2022-03-01 15:34:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:16,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:16,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:16,044 INFO L87 Difference]: Start difference. First operand 12021 states and 34475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:16,830 INFO L93 Difference]: Finished difference Result 23261 states and 66703 transitions. [2022-03-01 15:34:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:34:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:16,870 INFO L225 Difference]: With dead ends: 23261 [2022-03-01 15:34:16,871 INFO L226 Difference]: Without dead ends: 23261 [2022-03-01 15:34:16,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:34:16,871 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1039 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:16,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3628 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2022-03-01 15:34:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 12037. [2022-03-01 15:34:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-01 15:34:17,112 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-01 15:34:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:17,112 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-01 15:34:17,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-01 15:34:17,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:17,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:17,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:17,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-01 15:34:17,175 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1620224, now seen corresponding path program 3 times [2022-03-01 15:34:17,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:17,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210554621] [2022-03-01 15:34:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:17,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:17,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210554621] [2022-03-01 15:34:17,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210554621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:17,572 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:17,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:17,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255555150] [2022-03-01 15:34:17,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:17,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:17,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:17,573 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:18,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:18,324 INFO L93 Difference]: Finished difference Result 24125 states and 69175 transitions. [2022-03-01 15:34:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:34:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:18,365 INFO L225 Difference]: With dead ends: 24125 [2022-03-01 15:34:18,366 INFO L226 Difference]: Without dead ends: 24125 [2022-03-01 15:34:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:34:18,367 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1098 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:18,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3076 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24125 states. [2022-03-01 15:34:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24125 to 12005. [2022-03-01 15:34:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12005 states, 12004 states have (on average 2.8682939020326557) internal successors, (34431), 12004 states have internal predecessors, (34431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 34431 transitions. [2022-03-01 15:34:18,629 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 34431 transitions. Word has length 177 [2022-03-01 15:34:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:18,629 INFO L470 AbstractCegarLoop]: Abstraction has 12005 states and 34431 transitions. [2022-03-01 15:34:18,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 34431 transitions. [2022-03-01 15:34:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:18,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:18,644 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] [2022-03-01 15:34:18,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-01 15:34:18,645 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:18,645 INFO L85 PathProgramCache]: Analyzing trace with hash -464494442, now seen corresponding path program 3 times [2022-03-01 15:34:18,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:18,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937088072] [2022-03-01 15:34:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:19,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:19,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937088072] [2022-03-01 15:34:19,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937088072] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:19,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:19,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:19,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324357350] [2022-03-01 15:34:19,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:19,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:19,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:19,036 INFO L87 Difference]: Start difference. First operand 12005 states and 34431 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:19,738 INFO L93 Difference]: Finished difference Result 23945 states and 68795 transitions. [2022-03-01 15:34:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:34:19,738 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:19,784 INFO L225 Difference]: With dead ends: 23945 [2022-03-01 15:34:19,784 INFO L226 Difference]: Without dead ends: 23945 [2022-03-01 15:34:19,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:34:19,785 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1084 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:19,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3384 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23945 states. [2022-03-01 15:34:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23945 to 12163. [2022-03-01 15:34:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12163 states, 12162 states have (on average 2.867702680480184) internal successors, (34877), 12162 states have internal predecessors, (34877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 34877 transitions. [2022-03-01 15:34:20,148 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 34877 transitions. Word has length 177 [2022-03-01 15:34:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:20,149 INFO L470 AbstractCegarLoop]: Abstraction has 12163 states and 34877 transitions. [2022-03-01 15:34:20,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 34877 transitions. [2022-03-01 15:34:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:20,164 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:20,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:20,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-01 15:34:20,164 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1731127998, now seen corresponding path program 5 times [2022-03-01 15:34:20,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:20,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453457417] [2022-03-01 15:34:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:20,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:20,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453457417] [2022-03-01 15:34:20,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453457417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:20,555 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:20,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:20,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129876482] [2022-03-01 15:34:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:20,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:20,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:20,557 INFO L87 Difference]: Start difference. First operand 12163 states and 34877 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:21,385 INFO L93 Difference]: Finished difference Result 23735 states and 68113 transitions. [2022-03-01 15:34:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:34:21,385 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 [2022-03-01 15:34:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:21,428 INFO L225 Difference]: With dead ends: 23735 [2022-03-01 15:34:21,428 INFO L226 Difference]: Without dead ends: 23735 [2022-03-01 15:34:21,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:34:21,429 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 853 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:21,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3565 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2022-03-01 15:34:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 12195. [2022-03-01 15:34:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12195 states, 12194 states have (on average 2.867393800229621) internal successors, (34965), 12194 states have internal predecessors, (34965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12195 states to 12195 states and 34965 transitions. [2022-03-01 15:34:21,707 INFO L78 Accepts]: Start accepts. Automaton has 12195 states and 34965 transitions. Word has length 177 [2022-03-01 15:34:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:21,707 INFO L470 AbstractCegarLoop]: Abstraction has 12195 states and 34965 transitions. [2022-03-01 15:34:21,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 12195 states and 34965 transitions. [2022-03-01 15:34:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:21,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:21,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:21,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-01 15:34:21,725 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2137801898, now seen corresponding path program 6 times [2022-03-01 15:34:21,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:21,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367923063] [2022-03-01 15:34:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:22,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:22,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367923063] [2022-03-01 15:34:22,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367923063] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:34:22,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928646832] [2022-03-01 15:34:22,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:34:22,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:34:22,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:34:22,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:34:22,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 15:34:22,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:34:22,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:34:22,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-01 15:34:22,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:34:22,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:34:22,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-01 15:34:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:22,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:34:23,124 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-01 15:34:23,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-03-01 15:34:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:23,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928646832] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:34:23,323 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:34:23,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-01 15:34:23,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126127464] [2022-03-01 15:34:23,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:34:23,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:34:23,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:34:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:34:23,325 INFO L87 Difference]: Start difference. First operand 12195 states and 34965 transitions. Second operand has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:25,599 INFO L93 Difference]: Finished difference Result 35572 states and 102436 transitions. [2022-03-01 15:34:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:34:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:25,666 INFO L225 Difference]: With dead ends: 35572 [2022-03-01 15:34:25,666 INFO L226 Difference]: Without dead ends: 35572 [2022-03-01 15:34:25,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1236, Invalid=5084, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 15:34:25,668 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1967 mSDsluCounter, 7848 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:25,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 8196 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2284 Invalid, 0 Unknown, 430 Unchecked, 0.9s Time] [2022-03-01 15:34:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35572 states. [2022-03-01 15:34:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35572 to 14807. [2022-03-01 15:34:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-01 15:34:26,072 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-01 15:34:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:26,072 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-01 15:34:26,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-01 15:34:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:26,093 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:26,093 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] [2022-03-01 15:34:26,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 15:34:26,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:34:26,299 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1374048124, now seen corresponding path program 4 times [2022-03-01 15:34:26,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:26,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688452551] [2022-03-01 15:34:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:26,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:26,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:26,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688452551] [2022-03-01 15:34:26,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688452551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:26,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:26,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:26,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494974021] [2022-03-01 15:34:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:26,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:26,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:26,682 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:27,422 INFO L93 Difference]: Finished difference Result 26641 states and 76609 transitions. [2022-03-01 15:34:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:27,474 INFO L225 Difference]: With dead ends: 26641 [2022-03-01 15:34:27,475 INFO L226 Difference]: Without dead ends: 26641 [2022-03-01 15:34:27,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:34:27,476 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 788 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:27,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3709 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26641 states. [2022-03-01 15:34:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26641 to 14823. [2022-03-01 15:34:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-03-01 15:34:27,935 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-03-01 15:34:27,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:27,935 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-03-01 15:34:27,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-03-01 15:34:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:27,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:27,955 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] [2022-03-01 15:34:27,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-01 15:34:27,955 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash -152865438, now seen corresponding path program 1 times [2022-03-01 15:34:27,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:27,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723247329] [2022-03-01 15:34:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:28,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:28,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723247329] [2022-03-01 15:34:28,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723247329] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:28,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:28,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:28,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143735786] [2022-03-01 15:34:28,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:28,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:28,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:28,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:28,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:28,317 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:28,935 INFO L93 Difference]: Finished difference Result 26381 states and 75879 transitions. [2022-03-01 15:34:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:28,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:28,984 INFO L225 Difference]: With dead ends: 26381 [2022-03-01 15:34:28,984 INFO L226 Difference]: Without dead ends: 26381 [2022-03-01 15:34:28,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:34:28,985 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1149 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:28,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 3056 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26381 states. [2022-03-01 15:34:29,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26381 to 14831. [2022-03-01 15:34:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881928523263655) internal successors, (42739), 14830 states have internal predecessors, (42739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42739 transitions. [2022-03-01 15:34:29,329 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42739 transitions. Word has length 177 [2022-03-01 15:34:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:29,329 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42739 transitions. [2022-03-01 15:34:29,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42739 transitions. [2022-03-01 15:34:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:29,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:29,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:29,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-01 15:34:29,349 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash 48683452, now seen corresponding path program 7 times [2022-03-01 15:34:29,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:29,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125411465] [2022-03-01 15:34:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:29,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:29,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:29,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125411465] [2022-03-01 15:34:29,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125411465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:29,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:29,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:29,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517516272] [2022-03-01 15:34:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:29,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:29,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:29,780 INFO L87 Difference]: Start difference. First operand 14831 states and 42739 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:30,567 INFO L93 Difference]: Finished difference Result 26033 states and 74891 transitions. [2022-03-01 15:34:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:30,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:30,616 INFO L225 Difference]: With dead ends: 26033 [2022-03-01 15:34:30,616 INFO L226 Difference]: Without dead ends: 26033 [2022-03-01 15:34:30,616 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 [2022-03-01 15:34:30,617 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1231 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:30,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 3036 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2022-03-01 15:34:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 14823. [2022-03-01 15:34:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-03-01 15:34:30,991 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-03-01 15:34:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:30,992 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-03-01 15:34:30,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-03-01 15:34:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:31,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:31,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:31,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-01 15:34:31,013 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash 512258194, now seen corresponding path program 4 times [2022-03-01 15:34:31,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:31,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174374547] [2022-03-01 15:34:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:31,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:31,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174374547] [2022-03-01 15:34:31,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174374547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:31,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:31,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:31,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127768933] [2022-03-01 15:34:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:31,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:31,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:31,424 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:32,174 INFO L93 Difference]: Finished difference Result 26145 states and 75215 transitions. [2022-03-01 15:34:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:32,175 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:32,223 INFO L225 Difference]: With dead ends: 26145 [2022-03-01 15:34:32,223 INFO L226 Difference]: Without dead ends: 26145 [2022-03-01 15:34:32,223 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 [2022-03-01 15:34:32,224 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1375 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:32,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3191 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26145 states. [2022-03-01 15:34:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26145 to 14807. [2022-03-01 15:34:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-01 15:34:32,607 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-01 15:34:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:32,607 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-01 15:34:32,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-01 15:34:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:32,627 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:32,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:32,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-01 15:34:32,627 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash -301873108, now seen corresponding path program 5 times [2022-03-01 15:34:32,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:32,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872152320] [2022-03-01 15:34:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:33,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:33,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872152320] [2022-03-01 15:34:33,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872152320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:33,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:33,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:33,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595378775] [2022-03-01 15:34:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:33,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:33,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:33,016 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:33,765 INFO L93 Difference]: Finished difference Result 26625 states and 76533 transitions. [2022-03-01 15:34:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:33,765 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:33,814 INFO L225 Difference]: With dead ends: 26625 [2022-03-01 15:34:33,814 INFO L226 Difference]: Without dead ends: 26625 [2022-03-01 15:34:33,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:34:33,815 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 979 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:33,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3064 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26625 states. [2022-03-01 15:34:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26625 to 14839. [2022-03-01 15:34:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14839 states, 14838 states have (on average 2.882396549400189) internal successors, (42769), 14838 states have internal predecessors, (42769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14839 states to 14839 states and 42769 transitions. [2022-03-01 15:34:34,120 INFO L78 Accepts]: Start accepts. Automaton has 14839 states and 42769 transitions. Word has length 177 [2022-03-01 15:34:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:34,120 INFO L470 AbstractCegarLoop]: Abstraction has 14839 states and 42769 transitions. [2022-03-01 15:34:34,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 14839 states and 42769 transitions. [2022-03-01 15:34:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:34,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:34,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:34,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-01 15:34:34,141 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1828786670, now seen corresponding path program 2 times [2022-03-01 15:34:34,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:34,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957458026] [2022-03-01 15:34:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:34,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:34,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957458026] [2022-03-01 15:34:34,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957458026] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:34,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:34,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:34,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081395517] [2022-03-01 15:34:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:34,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:34,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:34,641 INFO L87 Difference]: Start difference. First operand 14839 states and 42769 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:35,270 INFO L93 Difference]: Finished difference Result 26373 states and 75825 transitions. [2022-03-01 15:34:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:35,321 INFO L225 Difference]: With dead ends: 26373 [2022-03-01 15:34:35,322 INFO L226 Difference]: Without dead ends: 26373 [2022-03-01 15:34:35,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:34:35,322 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1091 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:35,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2904 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26373 states. [2022-03-01 15:34:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26373 to 14855. [2022-03-01 15:34:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-03-01 15:34:35,602 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-03-01 15:34:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:35,602 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-03-01 15:34:35,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-03-01 15:34:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:35,623 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:35,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:35,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-01 15:34:35,623 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1627237780, now seen corresponding path program 8 times [2022-03-01 15:34:35,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:35,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010451807] [2022-03-01 15:34:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:35,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:36,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:36,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010451807] [2022-03-01 15:34:36,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010451807] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:36,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:36,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:36,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883986036] [2022-03-01 15:34:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:36,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:36,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:36,105 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:36,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:36,809 INFO L93 Difference]: Finished difference Result 26041 states and 74881 transitions. [2022-03-01 15:34:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:34:36,809 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:36,859 INFO L225 Difference]: With dead ends: 26041 [2022-03-01 15:34:36,860 INFO L226 Difference]: Without dead ends: 26041 [2022-03-01 15:34:36,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:34:36,860 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1281 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:36,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 3368 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2022-03-01 15:34:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 14855. [2022-03-01 15:34:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-03-01 15:34:37,146 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-03-01 15:34:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:37,146 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-03-01 15:34:37,147 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) [2022-03-01 15:34:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-03-01 15:34:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:37,220 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:37,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:37,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-01 15:34:37,221 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1163663038, now seen corresponding path program 5 times [2022-03-01 15:34:37,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:37,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967036773] [2022-03-01 15:34:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:37,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:37,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967036773] [2022-03-01 15:34:37,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967036773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:37,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:37,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:37,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165500160] [2022-03-01 15:34:37,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:37,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:37,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:37,636 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:38,347 INFO L93 Difference]: Finished difference Result 26161 states and 75227 transitions. [2022-03-01 15:34:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:34:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:38,399 INFO L225 Difference]: With dead ends: 26161 [2022-03-01 15:34:38,399 INFO L226 Difference]: Without dead ends: 26161 [2022-03-01 15:34:38,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:34:38,400 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1103 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:38,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 2480 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2022-03-01 15:34:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 14847. [2022-03-01 15:34:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-03-01 15:34:38,671 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-03-01 15:34:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:38,672 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-03-01 15:34:38,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-03-01 15:34:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:38,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:38,692 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] [2022-03-01 15:34:38,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-01 15:34:38,692 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1033050662, now seen corresponding path program 9 times [2022-03-01 15:34:38,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:38,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921468743] [2022-03-01 15:34:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:38,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:39,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:39,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921468743] [2022-03-01 15:34:39,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921468743] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:39,181 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:39,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:39,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156757822] [2022-03-01 15:34:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:39,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:39,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:39,182 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:39,859 INFO L93 Difference]: Finished difference Result 26377 states and 75813 transitions. [2022-03-01 15:34:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:34:39,859 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:39,908 INFO L225 Difference]: With dead ends: 26377 [2022-03-01 15:34:39,908 INFO L226 Difference]: Without dead ends: 26377 [2022-03-01 15:34:39,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:34:39,908 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1346 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:39,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 3152 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26377 states. [2022-03-01 15:34:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26377 to 14831. [2022-03-01 15:34:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881389076196898) internal successors, (42731), 14830 states have internal predecessors, (42731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42731 transitions. [2022-03-01 15:34:40,216 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42731 transitions. Word has length 177 [2022-03-01 15:34:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:40,217 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42731 transitions. [2022-03-01 15:34:40,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42731 transitions. [2022-03-01 15:34:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:40,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:40,249 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] [2022-03-01 15:34:40,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-01 15:34:40,250 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:40,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1327933054, now seen corresponding path program 6 times [2022-03-01 15:34:40,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:40,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2872418] [2022-03-01 15:34:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:40,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:40,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:40,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2872418] [2022-03-01 15:34:40,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2872418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:40,623 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:40,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:40,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095028198] [2022-03-01 15:34:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:40,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:40,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:40,624 INFO L87 Difference]: Start difference. First operand 14831 states and 42731 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:41,380 INFO L93 Difference]: Finished difference Result 26169 states and 75233 transitions. [2022-03-01 15:34:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:34:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:41,432 INFO L225 Difference]: With dead ends: 26169 [2022-03-01 15:34:41,432 INFO L226 Difference]: Without dead ends: 26169 [2022-03-01 15:34:41,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:34:41,433 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1042 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:41,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3255 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2022-03-01 15:34:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 14847. [2022-03-01 15:34:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-03-01 15:34:41,714 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-03-01 15:34:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:41,715 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-03-01 15:34:41,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-03-01 15:34:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:41,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:41,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:41,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-01 15:34:41,736 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash -766430368, now seen corresponding path program 7 times [2022-03-01 15:34:41,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:41,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493054830] [2022-03-01 15:34:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:41,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:42,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:42,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493054830] [2022-03-01 15:34:42,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493054830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:42,086 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:42,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:42,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172487152] [2022-03-01 15:34:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:42,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:42,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:42,087 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:42,813 INFO L93 Difference]: Finished difference Result 27033 states and 77705 transitions. [2022-03-01 15:34:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:34:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:42,865 INFO L225 Difference]: With dead ends: 27033 [2022-03-01 15:34:42,865 INFO L226 Difference]: Without dead ends: 27033 [2022-03-01 15:34:42,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:34:42,866 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1051 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:42,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3142 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27033 states. [2022-03-01 15:34:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27033 to 14807. [2022-03-01 15:34:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-01 15:34:43,216 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-01 15:34:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:43,216 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-01 15:34:43,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-01 15:34:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:43,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:43,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:43,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-01 15:34:43,237 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash 482623248, now seen corresponding path program 6 times [2022-03-01 15:34:43,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:43,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947816860] [2022-03-01 15:34:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:43,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:43,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947816860] [2022-03-01 15:34:43,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947816860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:43,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:43,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:43,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282581397] [2022-03-01 15:34:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:43,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:43,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:43,602 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:44,345 INFO L93 Difference]: Finished difference Result 30614 states and 87966 transitions. [2022-03-01 15:34:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:34:44,346 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:44,407 INFO L225 Difference]: With dead ends: 30614 [2022-03-01 15:34:44,407 INFO L226 Difference]: Without dead ends: 30614 [2022-03-01 15:34:44,408 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 [2022-03-01 15:34:44,408 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 1374 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:44,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 3104 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30614 states. [2022-03-01 15:34:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30614 to 15091. [2022-03-01 15:34:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 15090 states have (on average 2.8790589794565937) internal successors, (43445), 15090 states have internal predecessors, (43445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 43445 transitions. [2022-03-01 15:34:44,747 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 43445 transitions. Word has length 177 [2022-03-01 15:34:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:44,747 INFO L470 AbstractCegarLoop]: Abstraction has 15091 states and 43445 transitions. [2022-03-01 15:34:44,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 43445 transitions. [2022-03-01 15:34:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:44,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:44,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:44,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-01 15:34:44,768 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1354846062, now seen corresponding path program 7 times [2022-03-01 15:34:44,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:44,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738002479] [2022-03-01 15:34:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:45,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:45,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738002479] [2022-03-01 15:34:45,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738002479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:45,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:45,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:45,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631317251] [2022-03-01 15:34:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:45,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:45,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:45,214 INFO L87 Difference]: Start difference. First operand 15091 states and 43445 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:45,922 INFO L93 Difference]: Finished difference Result 27911 states and 80413 transitions. [2022-03-01 15:34:45,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:34:45,923 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:45,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:45,977 INFO L225 Difference]: With dead ends: 27911 [2022-03-01 15:34:45,977 INFO L226 Difference]: Without dead ends: 27911 [2022-03-01 15:34:45,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:34:45,977 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 1182 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:45,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 3308 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27911 states. [2022-03-01 15:34:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27911 to 15099. [2022-03-01 15:34:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-03-01 15:34:46,278 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-03-01 15:34:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:46,278 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-03-01 15:34:46,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-03-01 15:34:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:46,299 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:46,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:46,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-01 15:34:46,299 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1218579082, now seen corresponding path program 3 times [2022-03-01 15:34:46,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:46,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465363741] [2022-03-01 15:34:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:46,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:46,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465363741] [2022-03-01 15:34:46,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465363741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:46,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:46,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:46,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122541314] [2022-03-01 15:34:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:46,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:46,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:46,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:46,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:46,663 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:47,342 INFO L93 Difference]: Finished difference Result 27361 states and 78781 transitions. [2022-03-01 15:34:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:34:47,342 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:47,396 INFO L225 Difference]: With dead ends: 27361 [2022-03-01 15:34:47,397 INFO L226 Difference]: Without dead ends: 27361 [2022-03-01 15:34:47,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:34:47,397 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 909 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:47,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 3132 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27361 states. [2022-03-01 15:34:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27361 to 15131. [2022-03-01 15:34:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15131 states, 15130 states have (on average 2.8792465300727033) internal successors, (43563), 15130 states have internal predecessors, (43563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15131 states to 15131 states and 43563 transitions. [2022-03-01 15:34:47,791 INFO L78 Accepts]: Start accepts. Automaton has 15131 states and 43563 transitions. Word has length 177 [2022-03-01 15:34:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:47,791 INFO L470 AbstractCegarLoop]: Abstraction has 15131 states and 43563 transitions. [2022-03-01 15:34:47,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 15131 states and 43563 transitions. [2022-03-01 15:34:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:47,812 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:47,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:47,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-01 15:34:47,812 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash 24291170, now seen corresponding path program 4 times [2022-03-01 15:34:47,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:47,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388356532] [2022-03-01 15:34:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:47,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:48,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:48,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388356532] [2022-03-01 15:34:48,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388356532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:34:48,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500784256] [2022-03-01 15:34:48,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:34:48,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:34:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:34:48,193 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:34:48,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 15:34:48,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:34:48,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:34:48,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-01 15:34:48,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:34:48,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:34:48,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:34:49,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:34:49,309 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:34:49,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:34:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:34:49,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:34:51,522 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_996 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996))) (let ((.cse1 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-01 15:34:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:34:51,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500784256] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:34:51,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:34:51,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-03-01 15:34:51,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771814063] [2022-03-01 15:34:51,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:34:51,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 15:34:51,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:51,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 15:34:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1780, Unknown=5, NotChecked=86, Total=2070 [2022-03-01 15:34:51,642 INFO L87 Difference]: Start difference. First operand 15131 states and 43563 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:54,972 INFO L93 Difference]: Finished difference Result 31404 states and 90428 transitions. [2022-03-01 15:34:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:34:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:55,043 INFO L225 Difference]: With dead ends: 31404 [2022-03-01 15:34:55,043 INFO L226 Difference]: Without dead ends: 31404 [2022-03-01 15:34:55,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1773, Invalid=6968, Unknown=5, NotChecked=184, Total=8930 [2022-03-01 15:34:55,045 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 2683 mSDsluCounter, 8403 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 8627 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1162 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:55,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 8627 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2602 Invalid, 0 Unknown, 1162 Unchecked, 1.1s Time] [2022-03-01 15:34:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states. [2022-03-01 15:34:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 15099. [2022-03-01 15:34:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-03-01 15:34:55,476 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-03-01 15:34:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:55,476 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-03-01 15:34:55,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-03-01 15:34:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:55,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:55,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:55,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 15:34:55,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-01 15:34:55,699 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1101578668, now seen corresponding path program 8 times [2022-03-01 15:34:55,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:55,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342484350] [2022-03-01 15:34:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:55,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:56,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:56,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342484350] [2022-03-01 15:34:56,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342484350] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:56,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:56,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:56,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244251823] [2022-03-01 15:34:56,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:56,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:56,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:56,134 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:56,787 INFO L93 Difference]: Finished difference Result 27477 states and 79051 transitions. [2022-03-01 15:34:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:56,845 INFO L225 Difference]: With dead ends: 27477 [2022-03-01 15:34:56,845 INFO L226 Difference]: Without dead ends: 27477 [2022-03-01 15:34:56,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:34:56,846 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1020 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:56,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3186 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27477 states. [2022-03-01 15:34:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27477 to 15115. [2022-03-01 15:34:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-03-01 15:34:57,180 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-03-01 15:34:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:57,180 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-03-01 15:34:57,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-03-01 15:34:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:57,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:57,203 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] [2022-03-01 15:34:57,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-01 15:34:57,203 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1666475066, now seen corresponding path program 5 times [2022-03-01 15:34:57,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:57,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215938455] [2022-03-01 15:34:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:57,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:57,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215938455] [2022-03-01 15:34:57,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215938455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:57,556 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:57,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:34:57,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774031216] [2022-03-01 15:34:57,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:57,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:34:57,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:34:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:34:57,557 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:58,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:58,240 INFO L93 Difference]: Finished difference Result 27233 states and 78373 transitions. [2022-03-01 15:34:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:58,241 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 [2022-03-01 15:34:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:58,289 INFO L225 Difference]: With dead ends: 27233 [2022-03-01 15:34:58,289 INFO L226 Difference]: Without dead ends: 27233 [2022-03-01 15:34:58,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:34:58,290 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 873 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:58,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2884 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:34:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27233 states. [2022-03-01 15:34:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27233 to 15123. [2022-03-01 15:34:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15123 states, 15122 states have (on average 2.880372966538818) internal successors, (43557), 15122 states have internal predecessors, (43557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15123 states to 15123 states and 43557 transitions. [2022-03-01 15:34:58,573 INFO L78 Accepts]: Start accepts. Automaton has 15123 states and 43557 transitions. Word has length 177 [2022-03-01 15:34:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:58,573 INFO L470 AbstractCegarLoop]: Abstraction has 15123 states and 43557 transitions. [2022-03-01 15:34:58,573 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) [2022-03-01 15:34:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 15123 states and 43557 transitions. [2022-03-01 15:34:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:58,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:58,593 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] [2022-03-01 15:34:58,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-01 15:34:58,594 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1868023956, now seen corresponding path program 10 times [2022-03-01 15:34:58,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:58,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505730839] [2022-03-01 15:34:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:34:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:34:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:34:58,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:34:58,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505730839] [2022-03-01 15:34:58,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505730839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:34:58,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:34:58,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:34:58,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296853513] [2022-03-01 15:34:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:34:58,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:34:58,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:34:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:34:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:34:58,957 INFO L87 Difference]: Start difference. First operand 15123 states and 43557 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:34:59,627 INFO L93 Difference]: Finished difference Result 27005 states and 77715 transitions. [2022-03-01 15:34:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:34:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:34:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:34:59,678 INFO L225 Difference]: With dead ends: 27005 [2022-03-01 15:34:59,678 INFO L226 Difference]: Without dead ends: 27005 [2022-03-01 15:34:59,679 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 [2022-03-01 15:34:59,679 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1070 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:34:59,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3250 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:34:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27005 states. [2022-03-01 15:34:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27005 to 15115. [2022-03-01 15:34:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-03-01 15:34:59,974 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-03-01 15:34:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:34:59,974 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-03-01 15:34:59,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:34:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-03-01 15:34:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:34:59,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:34:59,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:34:59,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-01 15:34:59,997 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:34:59,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:34:59,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1963368598, now seen corresponding path program 8 times [2022-03-01 15:34:59,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:34:59,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131883742] [2022-03-01 15:34:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:34:59,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:00,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:00,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131883742] [2022-03-01 15:35:00,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131883742] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:00,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:00,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:00,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035026910] [2022-03-01 15:35:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:00,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:00,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:00,369 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:00,994 INFO L93 Difference]: Finished difference Result 26989 states and 77679 transitions. [2022-03-01 15:35:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:35:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:01,052 INFO L225 Difference]: With dead ends: 26989 [2022-03-01 15:35:01,052 INFO L226 Difference]: Without dead ends: 26989 [2022-03-01 15:35:01,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:35:01,053 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 972 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:01,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 3239 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26989 states. [2022-03-01 15:35:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26989 to 15107. [2022-03-01 15:35:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15107 states, 15106 states have (on average 2.8789222825367404) internal successors, (43489), 15106 states have internal predecessors, (43489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15107 states to 15107 states and 43489 transitions. [2022-03-01 15:35:01,408 INFO L78 Accepts]: Start accepts. Automaton has 15107 states and 43489 transitions. Word has length 177 [2022-03-01 15:35:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:01,408 INFO L470 AbstractCegarLoop]: Abstraction has 15107 states and 43489 transitions. [2022-03-01 15:35:01,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 15107 states and 43489 transitions. [2022-03-01 15:35:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:01,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:01,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:01,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-01 15:35:01,430 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1840144822, now seen corresponding path program 6 times [2022-03-01 15:35:01,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:01,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111224587] [2022-03-01 15:35:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:01,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:01,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111224587] [2022-03-01 15:35:01,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111224587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:01,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:01,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:01,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291046596] [2022-03-01 15:35:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:01,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:01,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:01,781 INFO L87 Difference]: Start difference. First operand 15107 states and 43489 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:02,478 INFO L93 Difference]: Finished difference Result 27625 states and 79443 transitions. [2022-03-01 15:35:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:35:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:02,529 INFO L225 Difference]: With dead ends: 27625 [2022-03-01 15:35:02,529 INFO L226 Difference]: Without dead ends: 27625 [2022-03-01 15:35:02,530 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 [2022-03-01 15:35:02,533 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 881 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:02,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 3164 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27625 states. [2022-03-01 15:35:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27625 to 15127. [2022-03-01 15:35:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 15126 states have (on average 2.878553484067169) internal successors, (43541), 15126 states have internal predecessors, (43541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 43541 transitions. [2022-03-01 15:35:02,839 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 43541 transitions. Word has length 177 [2022-03-01 15:35:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:02,840 INFO L470 AbstractCegarLoop]: Abstraction has 15127 states and 43541 transitions. [2022-03-01 15:35:02,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 43541 transitions. [2022-03-01 15:35:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:02,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:02,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:02,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-01 15:35:02,862 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1211952222, now seen corresponding path program 7 times [2022-03-01 15:35:02,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:02,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221251568] [2022-03-01 15:35:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:03,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:03,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221251568] [2022-03-01 15:35:03,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221251568] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:03,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270954954] [2022-03-01 15:35:03,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:35:03,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:03,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:03,196 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:03,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 15:35:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:03,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 15:35:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:03,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:03,471 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-01 15:35:03,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-01 15:35:03,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:35:03,836 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-01 15:35:03,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-01 15:35:03,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:04,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:04,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:04,414 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:35:04,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:35:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:35:04,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:35:04,779 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1115 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1115))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1))))) (= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-01 15:35:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:35:04,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270954954] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:35:04,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:35:04,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-01 15:35:04,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025929627] [2022-03-01 15:35:04,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:35:04,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-01 15:35:04,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-01 15:35:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2162, Unknown=1, NotChecked=94, Total=2450 [2022-03-01 15:35:04,894 INFO L87 Difference]: Start difference. First operand 15127 states and 43541 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:08,144 INFO L93 Difference]: Finished difference Result 33129 states and 95235 transitions. [2022-03-01 15:35:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:35:08,144 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:08,206 INFO L225 Difference]: With dead ends: 33129 [2022-03-01 15:35:08,206 INFO L226 Difference]: Without dead ends: 33129 [2022-03-01 15:35:08,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1765, Invalid=7358, Unknown=1, NotChecked=188, Total=9312 [2022-03-01 15:35:08,208 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 3787 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 8493 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1371 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:08,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3787 Valid, 8493 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2157 Invalid, 0 Unknown, 1371 Unchecked, 1.0s Time] [2022-03-01 15:35:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33129 states. [2022-03-01 15:35:08,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33129 to 15031. [2022-03-01 15:35:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-03-01 15:35:08,574 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-03-01 15:35:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:08,574 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-03-01 15:35:08,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-03-01 15:35:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:08,595 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:08,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:08,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-01 15:35:08,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-01 15:35:08,796 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1165193162, now seen corresponding path program 9 times [2022-03-01 15:35:08,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:08,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649353512] [2022-03-01 15:35:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:09,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:09,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649353512] [2022-03-01 15:35:09,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649353512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:09,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:09,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:09,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448179563] [2022-03-01 15:35:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:09,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:09,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:09,160 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:09,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:09,895 INFO L93 Difference]: Finished difference Result 27887 states and 80315 transitions. [2022-03-01 15:35:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:35:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:09,948 INFO L225 Difference]: With dead ends: 27887 [2022-03-01 15:35:09,948 INFO L226 Difference]: Without dead ends: 27887 [2022-03-01 15:35:09,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:35:09,948 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1013 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:09,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 3657 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2022-03-01 15:35:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 15031. [2022-03-01 15:35:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-03-01 15:35:10,254 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-03-01 15:35:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:10,254 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-03-01 15:35:10,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-03-01 15:35:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:10,274 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:10,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:10,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-01 15:35:10,274 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash 556348990, now seen corresponding path program 8 times [2022-03-01 15:35:10,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:10,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241602221] [2022-03-01 15:35:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:10,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:10,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241602221] [2022-03-01 15:35:10,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241602221] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:10,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:10,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:10,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852447719] [2022-03-01 15:35:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:10,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:10,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:10,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:10,686 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:11,422 INFO L93 Difference]: Finished difference Result 27257 states and 78431 transitions. [2022-03-01 15:35:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:35:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:11,474 INFO L225 Difference]: With dead ends: 27257 [2022-03-01 15:35:11,474 INFO L226 Difference]: Without dead ends: 27257 [2022-03-01 15:35:11,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:35:11,475 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1068 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:11,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3346 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27257 states. [2022-03-01 15:35:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27257 to 15033. [2022-03-01 15:35:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15033 states, 15032 states have (on average 2.8792575838211816) internal successors, (43281), 15032 states have internal predecessors, (43281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15033 states to 15033 states and 43281 transitions. [2022-03-01 15:35:11,765 INFO L78 Accepts]: Start accepts. Automaton has 15033 states and 43281 transitions. Word has length 177 [2022-03-01 15:35:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:11,765 INFO L470 AbstractCegarLoop]: Abstraction has 15033 states and 43281 transitions. [2022-03-01 15:35:11,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15033 states and 43281 transitions. [2022-03-01 15:35:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:11,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:11,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:11,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-01 15:35:11,839 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:11,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1799219242, now seen corresponding path program 9 times [2022-03-01 15:35:11,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:11,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636106167] [2022-03-01 15:35:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:11,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:12,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:12,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636106167] [2022-03-01 15:35:12,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636106167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:12,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405024567] [2022-03-01 15:35:12,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:35:12,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:12,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:12,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 15:35:12,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:35:12,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:35:12,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-01 15:35:12,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:12,696 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:35:12,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:35:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:12,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:35:12,927 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-01 15:35:12,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-03-01 15:35:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:13,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405024567] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:35:13,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:35:13,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-03-01 15:35:13,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291810067] [2022-03-01 15:35:13,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:35:13,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 15:35:13,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 15:35:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-03-01 15:35:13,090 INFO L87 Difference]: Start difference. First operand 15033 states and 43281 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:15,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:15,347 INFO L93 Difference]: Finished difference Result 49915 states and 143127 transitions. [2022-03-01 15:35:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 15:35:15,348 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:15,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:15,452 INFO L225 Difference]: With dead ends: 49915 [2022-03-01 15:35:15,452 INFO L226 Difference]: Without dead ends: 49915 [2022-03-01 15:35:15,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 361 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1322, Invalid=5650, Unknown=0, NotChecked=0, Total=6972 [2022-03-01 15:35:15,453 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2310 mSDsluCounter, 5784 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 911 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:15,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 6066 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1409 Invalid, 0 Unknown, 911 Unchecked, 0.6s Time] [2022-03-01 15:35:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49915 states. [2022-03-01 15:35:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49915 to 15149. [2022-03-01 15:35:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15149 states, 15148 states have (on average 2.8801822022709267) internal successors, (43629), 15148 states have internal predecessors, (43629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15149 states to 15149 states and 43629 transitions. [2022-03-01 15:35:15,916 INFO L78 Accepts]: Start accepts. Automaton has 15149 states and 43629 transitions. Word has length 177 [2022-03-01 15:35:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:15,916 INFO L470 AbstractCegarLoop]: Abstraction has 15149 states and 43629 transitions. [2022-03-01 15:35:15,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 15149 states and 43629 transitions. [2022-03-01 15:35:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:15,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:15,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:15,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 15:35:16,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-01 15:35:16,138 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 673349404, now seen corresponding path program 10 times [2022-03-01 15:35:16,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:16,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060855216] [2022-03-01 15:35:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:16,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:16,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060855216] [2022-03-01 15:35:16,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060855216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:16,514 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:16,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:16,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138640677] [2022-03-01 15:35:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:16,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:16,519 INFO L87 Difference]: Start difference. First operand 15149 states and 43629 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:17,271 INFO L93 Difference]: Finished difference Result 27659 states and 79595 transitions. [2022-03-01 15:35:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:17,271 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:17,322 INFO L225 Difference]: With dead ends: 27659 [2022-03-01 15:35:17,323 INFO L226 Difference]: Without dead ends: 27659 [2022-03-01 15:35:17,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:35:17,323 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1082 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:17,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3788 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27659 states. [2022-03-01 15:35:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27659 to 15165. [2022-03-01 15:35:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 2.8810999736217355) internal successors, (43689), 15164 states have internal predecessors, (43689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 43689 transitions. [2022-03-01 15:35:17,617 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 43689 transitions. Word has length 177 [2022-03-01 15:35:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:17,617 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 43689 transitions. [2022-03-01 15:35:17,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 43689 transitions. [2022-03-01 15:35:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:17,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:17,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:17,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-01 15:35:17,639 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -853564158, now seen corresponding path program 10 times [2022-03-01 15:35:17,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:17,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050931426] [2022-03-01 15:35:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:18,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:18,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050931426] [2022-03-01 15:35:18,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050931426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:18,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:18,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:18,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076827590] [2022-03-01 15:35:18,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:18,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:18,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:18,005 INFO L87 Difference]: Start difference. First operand 15165 states and 43689 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:18,673 INFO L93 Difference]: Finished difference Result 27399 states and 78865 transitions. [2022-03-01 15:35:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:18,674 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:18,724 INFO L225 Difference]: With dead ends: 27399 [2022-03-01 15:35:18,724 INFO L226 Difference]: Without dead ends: 27399 [2022-03-01 15:35:18,724 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 [2022-03-01 15:35:18,724 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1275 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:18,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 3080 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27399 states. [2022-03-01 15:35:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27399 to 15173. [2022-03-01 15:35:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15173 states, 15172 states have (on average 2.881030846295808) internal successors, (43711), 15172 states have internal predecessors, (43711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15173 states to 15173 states and 43711 transitions. [2022-03-01 15:35:19,007 INFO L78 Accepts]: Start accepts. Automaton has 15173 states and 43711 transitions. Word has length 177 [2022-03-01 15:35:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:19,007 INFO L470 AbstractCegarLoop]: Abstraction has 15173 states and 43711 transitions. [2022-03-01 15:35:19,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15173 states and 43711 transitions. [2022-03-01 15:35:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:19,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:19,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:19,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-01 15:35:19,028 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:19,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -652015268, now seen corresponding path program 11 times [2022-03-01 15:35:19,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:19,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091189479] [2022-03-01 15:35:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:19,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:19,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091189479] [2022-03-01 15:35:19,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091189479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:19,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:19,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:19,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331300537] [2022-03-01 15:35:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:19,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:19,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:19,402 INFO L87 Difference]: Start difference. First operand 15173 states and 43711 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:20,087 INFO L93 Difference]: Finished difference Result 27051 states and 77877 transitions. [2022-03-01 15:35:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:20,087 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:20,141 INFO L225 Difference]: With dead ends: 27051 [2022-03-01 15:35:20,141 INFO L226 Difference]: Without dead ends: 27051 [2022-03-01 15:35:20,141 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 [2022-03-01 15:35:20,141 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1068 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:20,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3144 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2022-03-01 15:35:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 15165. [2022-03-01 15:35:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 2.8810999736217355) internal successors, (43689), 15164 states have internal predecessors, (43689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 43689 transitions. [2022-03-01 15:35:20,648 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 43689 transitions. Word has length 177 [2022-03-01 15:35:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:20,648 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 43689 transitions. [2022-03-01 15:35:20,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 43689 transitions. [2022-03-01 15:35:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:20,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:20,668 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] [2022-03-01 15:35:20,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-01 15:35:20,669 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash -188440526, now seen corresponding path program 9 times [2022-03-01 15:35:20,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:20,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059796029] [2022-03-01 15:35:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:21,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:21,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059796029] [2022-03-01 15:35:21,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059796029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:21,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:21,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:21,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935087259] [2022-03-01 15:35:21,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:21,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:21,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:21,034 INFO L87 Difference]: Start difference. First operand 15165 states and 43689 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:21,626 INFO L93 Difference]: Finished difference Result 27163 states and 78201 transitions. [2022-03-01 15:35:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:21,675 INFO L225 Difference]: With dead ends: 27163 [2022-03-01 15:35:21,675 INFO L226 Difference]: Without dead ends: 27163 [2022-03-01 15:35:21,675 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 [2022-03-01 15:35:21,675 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1172 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:21,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 2370 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27163 states. [2022-03-01 15:35:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27163 to 15147. [2022-03-01 15:35:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15146 states have (on average 2.8801663805625246) internal successors, (43623), 15146 states have internal predecessors, (43623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 43623 transitions. [2022-03-01 15:35:21,959 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 43623 transitions. Word has length 177 [2022-03-01 15:35:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:21,959 INFO L470 AbstractCegarLoop]: Abstraction has 15147 states and 43623 transitions. [2022-03-01 15:35:21,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 43623 transitions. [2022-03-01 15:35:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:21,980 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:21,980 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] [2022-03-01 15:35:21,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-01 15:35:21,980 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1002571828, now seen corresponding path program 11 times [2022-03-01 15:35:21,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:21,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100669709] [2022-03-01 15:35:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:22,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:22,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100669709] [2022-03-01 15:35:22,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100669709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:22,337 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:22,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:22,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031867612] [2022-03-01 15:35:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:22,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:22,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:22,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:22,338 INFO L87 Difference]: Start difference. First operand 15147 states and 43623 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:22,930 INFO L93 Difference]: Finished difference Result 27559 states and 79273 transitions. [2022-03-01 15:35:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:35:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:22,982 INFO L225 Difference]: With dead ends: 27559 [2022-03-01 15:35:22,982 INFO L226 Difference]: Without dead ends: 27559 [2022-03-01 15:35:22,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:35:22,982 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1295 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:22,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 2657 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27559 states. [2022-03-01 15:35:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27559 to 15147. [2022-03-01 15:35:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15146 states have (on average 2.8796381883005413) internal successors, (43615), 15146 states have internal predecessors, (43615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 43615 transitions. [2022-03-01 15:35:23,272 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 43615 transitions. Word has length 177 [2022-03-01 15:35:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:23,272 INFO L470 AbstractCegarLoop]: Abstraction has 15147 states and 43615 transitions. [2022-03-01 15:35:23,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 43615 transitions. [2022-03-01 15:35:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:23,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:23,292 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] [2022-03-01 15:35:23,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-01 15:35:23,293 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1765481906, now seen corresponding path program 11 times [2022-03-01 15:35:23,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:23,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989641723] [2022-03-01 15:35:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:23,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:23,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989641723] [2022-03-01 15:35:23,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989641723] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:23,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:23,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:23,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789235924] [2022-03-01 15:35:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:23,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:23,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:23,653 INFO L87 Difference]: Start difference. First operand 15147 states and 43615 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:24,285 INFO L93 Difference]: Finished difference Result 26935 states and 77239 transitions. [2022-03-01 15:35:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:35:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:24,334 INFO L225 Difference]: With dead ends: 26935 [2022-03-01 15:35:24,334 INFO L226 Difference]: Without dead ends: 26935 [2022-03-01 15:35:24,335 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 [2022-03-01 15:35:24,335 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1274 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:24,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 2821 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26935 states. [2022-03-01 15:35:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26935 to 14779. [2022-03-01 15:35:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.861753958587089) internal successors, (42291), 14778 states have internal predecessors, (42291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42291 transitions. [2022-03-01 15:35:24,807 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42291 transitions. Word has length 177 [2022-03-01 15:35:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:24,807 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42291 transitions. [2022-03-01 15:35:24,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42291 transitions. [2022-03-01 15:35:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:24,827 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:24,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:24,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-01 15:35:24,827 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1967030796, now seen corresponding path program 12 times [2022-03-01 15:35:24,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:24,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676775740] [2022-03-01 15:35:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:25,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:25,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676775740] [2022-03-01 15:35:25,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676775740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:25,193 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:25,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:25,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315413910] [2022-03-01 15:35:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:25,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:25,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:25,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:25,194 INFO L87 Difference]: Start difference. First operand 14779 states and 42291 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:25,833 INFO L93 Difference]: Finished difference Result 26603 states and 76295 transitions. [2022-03-01 15:35:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:25,880 INFO L225 Difference]: With dead ends: 26603 [2022-03-01 15:35:25,881 INFO L226 Difference]: Without dead ends: 26603 [2022-03-01 15:35:25,881 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 [2022-03-01 15:35:25,881 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1068 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:25,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3132 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26603 states. [2022-03-01 15:35:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26603 to 14779. [2022-03-01 15:35:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.861753958587089) internal successors, (42291), 14778 states have internal predecessors, (42291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42291 transitions. [2022-03-01 15:35:26,157 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42291 transitions. Word has length 177 [2022-03-01 15:35:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:26,157 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42291 transitions. [2022-03-01 15:35:26,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42291 transitions. [2022-03-01 15:35:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:26,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:26,178 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] [2022-03-01 15:35:26,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-01 15:35:26,178 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1864361758, now seen corresponding path program 10 times [2022-03-01 15:35:26,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:26,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814103980] [2022-03-01 15:35:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:26,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:26,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814103980] [2022-03-01 15:35:26,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814103980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:26,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:26,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:26,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843443070] [2022-03-01 15:35:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:26,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:26,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:26,602 INFO L87 Difference]: Start difference. First operand 14779 states and 42291 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:27,323 INFO L93 Difference]: Finished difference Result 26723 states and 76641 transitions. [2022-03-01 15:35:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:27,369 INFO L225 Difference]: With dead ends: 26723 [2022-03-01 15:35:27,370 INFO L226 Difference]: Without dead ends: 26723 [2022-03-01 15:35:27,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:35:27,370 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 1084 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:27,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3767 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26723 states. [2022-03-01 15:35:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26723 to 14771. [2022-03-01 15:35:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14771 states, 14770 states have (on average 2.860731211916046) internal successors, (42253), 14770 states have internal predecessors, (42253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14771 states to 14771 states and 42253 transitions. [2022-03-01 15:35:27,646 INFO L78 Accepts]: Start accepts. Automaton has 14771 states and 42253 transitions. Word has length 177 [2022-03-01 15:35:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:27,646 INFO L470 AbstractCegarLoop]: Abstraction has 14771 states and 42253 transitions. [2022-03-01 15:35:27,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14771 states and 42253 transitions. [2022-03-01 15:35:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:27,665 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:27,665 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] [2022-03-01 15:35:27,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-01 15:35:27,666 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash 332351942, now seen corresponding path program 13 times [2022-03-01 15:35:27,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:27,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703337048] [2022-03-01 15:35:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:28,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:28,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703337048] [2022-03-01 15:35:28,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703337048] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:28,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:28,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:28,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515305107] [2022-03-01 15:35:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:28,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:28,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:28,074 INFO L87 Difference]: Start difference. First operand 14771 states and 42253 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:28,842 INFO L93 Difference]: Finished difference Result 25753 states and 73603 transitions. [2022-03-01 15:35:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:35:28,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:28,887 INFO L225 Difference]: With dead ends: 25753 [2022-03-01 15:35:28,888 INFO L226 Difference]: Without dead ends: 25753 [2022-03-01 15:35:28,888 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 [2022-03-01 15:35:28,888 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1305 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:28,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 4115 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25753 states. [2022-03-01 15:35:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25753 to 13913. [2022-03-01 15:35:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13913 states, 13912 states have (on average 2.850848188614146) internal successors, (39661), 13912 states have internal predecessors, (39661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13913 states to 13913 states and 39661 transitions. [2022-03-01 15:35:29,157 INFO L78 Accepts]: Start accepts. Automaton has 13913 states and 39661 transitions. Word has length 177 [2022-03-01 15:35:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:29,157 INFO L470 AbstractCegarLoop]: Abstraction has 13913 states and 39661 transitions. [2022-03-01 15:35:29,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13913 states and 39661 transitions. [2022-03-01 15:35:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:29,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:29,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:29,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-01 15:35:29,177 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash 627234334, now seen corresponding path program 11 times [2022-03-01 15:35:29,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:29,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982651232] [2022-03-01 15:35:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:29,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:29,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982651232] [2022-03-01 15:35:29,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982651232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:29,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:29,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:29,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975667134] [2022-03-01 15:35:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:29,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:29,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:29,588 INFO L87 Difference]: Start difference. First operand 13913 states and 39661 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:30,334 INFO L93 Difference]: Finished difference Result 25473 states and 72801 transitions. [2022-03-01 15:35:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:35:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:30,378 INFO L225 Difference]: With dead ends: 25473 [2022-03-01 15:35:30,378 INFO L226 Difference]: Without dead ends: 25473 [2022-03-01 15:35:30,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:35:30,378 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1080 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:30,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 3239 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25473 states. [2022-03-01 15:35:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25473 to 13929. [2022-03-01 15:35:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13929 states, 13928 states have (on average 2.850732337736933) internal successors, (39705), 13928 states have internal predecessors, (39705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 39705 transitions. [2022-03-01 15:35:30,627 INFO L78 Accepts]: Start accepts. Automaton has 13929 states and 39705 transitions. Word has length 177 [2022-03-01 15:35:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:30,627 INFO L470 AbstractCegarLoop]: Abstraction has 13929 states and 39705 transitions. [2022-03-01 15:35:30,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13929 states and 39705 transitions. [2022-03-01 15:35:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:30,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:30,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:30,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-01 15:35:30,646 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:30,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1467129088, now seen corresponding path program 12 times [2022-03-01 15:35:30,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:30,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952121892] [2022-03-01 15:35:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:30,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:31,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:31,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952121892] [2022-03-01 15:35:31,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952121892] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:31,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:31,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:31,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858146077] [2022-03-01 15:35:31,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:31,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:31,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:31,031 INFO L87 Difference]: Start difference. First operand 13929 states and 39705 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:31,698 INFO L93 Difference]: Finished difference Result 26337 states and 75273 transitions. [2022-03-01 15:35:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:35:31,699 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:31,747 INFO L225 Difference]: With dead ends: 26337 [2022-03-01 15:35:31,748 INFO L226 Difference]: Without dead ends: 26337 [2022-03-01 15:35:31,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:35:31,748 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1292 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:31,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 2703 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:35:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26337 states. [2022-03-01 15:35:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26337 to 13887. [2022-03-01 15:35:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13887 states, 13886 states have (on average 2.850568918335014) internal successors, (39583), 13886 states have internal predecessors, (39583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13887 states to 13887 states and 39583 transitions. [2022-03-01 15:35:32,021 INFO L78 Accepts]: Start accepts. Automaton has 13887 states and 39583 transitions. Word has length 177 [2022-03-01 15:35:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:32,021 INFO L470 AbstractCegarLoop]: Abstraction has 13887 states and 39583 transitions. [2022-03-01 15:35:32,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 13887 states and 39583 transitions. [2022-03-01 15:35:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:32,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:32,040 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] [2022-03-01 15:35:32,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-01 15:35:32,040 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -850243970, now seen corresponding path program 12 times [2022-03-01 15:35:32,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:32,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156729140] [2022-03-01 15:35:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:32,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:32,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156729140] [2022-03-01 15:35:32,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156729140] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:32,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897089819] [2022-03-01 15:35:32,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:35:32,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:32,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:32,371 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:32,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 15:35:32,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:35:32,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:35:32,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-01 15:35:32,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:32,860 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:35:32,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:35:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:32,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:35:33,095 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-01 15:35:33,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-03-01 15:35:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:33,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897089819] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:35:33,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:35:33,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 9] total 35 [2022-03-01 15:35:33,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457503407] [2022-03-01 15:35:33,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:35:33,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 15:35:33,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 15:35:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:35:33,259 INFO L87 Difference]: Start difference. First operand 13887 states and 39583 transitions. Second operand has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:34,259 INFO L93 Difference]: Finished difference Result 27255 states and 77861 transitions. [2022-03-01 15:35:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:35:34,259 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:34,308 INFO L225 Difference]: With dead ends: 27255 [2022-03-01 15:35:34,308 INFO L226 Difference]: Without dead ends: 27255 [2022-03-01 15:35:34,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 15:35:34,309 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1585 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:34,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 5722 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1114 Invalid, 0 Unknown, 302 Unchecked, 0.4s Time] [2022-03-01 15:35:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27255 states. [2022-03-01 15:35:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27255 to 13881. [2022-03-01 15:35:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13881 states, 13880 states have (on average 2.8505043227665707) internal successors, (39565), 13880 states have internal predecessors, (39565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 39565 transitions. [2022-03-01 15:35:34,583 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 39565 transitions. Word has length 177 [2022-03-01 15:35:34,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:34,583 INFO L470 AbstractCegarLoop]: Abstraction has 13881 states and 39565 transitions. [2022-03-01 15:35:34,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 39565 transitions. [2022-03-01 15:35:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:34,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:34,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:34,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 15:35:34,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-01 15:35:34,802 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -437921898, now seen corresponding path program 13 times [2022-03-01 15:35:34,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:34,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828157685] [2022-03-01 15:35:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:35,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:35,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828157685] [2022-03-01 15:35:35,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828157685] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:35,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120571006] [2022-03-01 15:35:35,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:35:35,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:35,185 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:35,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 15:35:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 15:35:35,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:35,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:35,474 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-01 15:35:35,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-01 15:35:35,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:35:35,836 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-01 15:35:35,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-01 15:35:35,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:36,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:36,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:36,439 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:35:36,439 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 26 treesize of output 10 [2022-03-01 15:35:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:35:36,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:35:36,827 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1426 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1426))) (let ((.cse0 (select .cse3 c_~get1~0.base)) (.cse2 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse0 c_~get1~0.offset) (select .cse2 c_~get2~0.offset)))))) is different from false [2022-03-01 15:35:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:35:36,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120571006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:35:36,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:35:36,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-01 15:35:36,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61938109] [2022-03-01 15:35:36,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:35:36,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-01 15:35:36,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-01 15:35:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2149, Unknown=1, NotChecked=94, Total=2450 [2022-03-01 15:35:36,990 INFO L87 Difference]: Start difference. First operand 13881 states and 39565 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:40,210 INFO L93 Difference]: Finished difference Result 27224 states and 77936 transitions. [2022-03-01 15:35:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:35:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:40,259 INFO L225 Difference]: With dead ends: 27224 [2022-03-01 15:35:40,259 INFO L226 Difference]: Without dead ends: 27224 [2022-03-01 15:35:40,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1673, Invalid=7072, Unknown=1, NotChecked=184, Total=8930 [2022-03-01 15:35:40,260 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 3076 mSDsluCounter, 7495 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 7713 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1486 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:40,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3076 Valid, 7713 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2212 Invalid, 0 Unknown, 1486 Unchecked, 1.0s Time] [2022-03-01 15:35:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27224 states. [2022-03-01 15:35:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27224 to 13145. [2022-03-01 15:35:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13145 states, 13144 states have (on average 2.8651095556908093) internal successors, (37659), 13144 states have internal predecessors, (37659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 37659 transitions. [2022-03-01 15:35:40,530 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 37659 transitions. Word has length 177 [2022-03-01 15:35:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:40,530 INFO L470 AbstractCegarLoop]: Abstraction has 13145 states and 37659 transitions. [2022-03-01 15:35:40,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 37659 transitions. [2022-03-01 15:35:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:40,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:40,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:40,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 15:35:40,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:40,748 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash -190982338, now seen corresponding path program 12 times [2022-03-01 15:35:40,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:40,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548063264] [2022-03-01 15:35:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:40,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:41,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:41,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548063264] [2022-03-01 15:35:41,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548063264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:41,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:41,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:41,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104800635] [2022-03-01 15:35:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:41,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:41,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:41,041 INFO L87 Difference]: Start difference. First operand 13145 states and 37659 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:41,753 INFO L93 Difference]: Finished difference Result 28662 states and 82319 transitions. [2022-03-01 15:35:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:35:41,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:41,806 INFO L225 Difference]: With dead ends: 28662 [2022-03-01 15:35:41,806 INFO L226 Difference]: Without dead ends: 28662 [2022-03-01 15:35:41,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:35:41,807 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1028 mSDsluCounter, 4257 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:41,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 4580 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28662 states. [2022-03-01 15:35:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28662 to 13657. [2022-03-01 15:35:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13657 states, 13656 states have (on average 2.8615260691271236) internal successors, (39077), 13656 states have internal predecessors, (39077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13657 states to 13657 states and 39077 transitions. [2022-03-01 15:35:42,084 INFO L78 Accepts]: Start accepts. Automaton has 13657 states and 39077 transitions. Word has length 177 [2022-03-01 15:35:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:42,085 INFO L470 AbstractCegarLoop]: Abstraction has 13657 states and 39077 transitions. [2022-03-01 15:35:42,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13657 states and 39077 transitions. [2022-03-01 15:35:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:42,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:42,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:42,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-01 15:35:42,103 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1068165586, now seen corresponding path program 14 times [2022-03-01 15:35:42,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:42,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462772406] [2022-03-01 15:35:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:42,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:42,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462772406] [2022-03-01 15:35:42,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462772406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:42,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:42,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:42,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130048435] [2022-03-01 15:35:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:42,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:42,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:42,420 INFO L87 Difference]: Start difference. First operand 13657 states and 39077 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:43,160 INFO L93 Difference]: Finished difference Result 22774 states and 65512 transitions. [2022-03-01 15:35:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:43,160 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:43,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:43,199 INFO L225 Difference]: With dead ends: 22774 [2022-03-01 15:35:43,199 INFO L226 Difference]: Without dead ends: 22774 [2022-03-01 15:35:43,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:35:43,199 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1048 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3838 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:43,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 3838 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-03-01 15:35:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 13857. [2022-03-01 15:35:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 13856 states have (on average 2.859483256351039) internal successors, (39621), 13856 states have internal predecessors, (39621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 39621 transitions. [2022-03-01 15:35:43,436 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 39621 transitions. Word has length 177 [2022-03-01 15:35:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:43,437 INFO L470 AbstractCegarLoop]: Abstraction has 13857 states and 39621 transitions. [2022-03-01 15:35:43,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 39621 transitions. [2022-03-01 15:35:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:43,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:43,455 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] [2022-03-01 15:35:43,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-01 15:35:43,455 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 264718334, now seen corresponding path program 15 times [2022-03-01 15:35:43,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:43,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914519574] [2022-03-01 15:35:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:43,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:43,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:43,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914519574] [2022-03-01 15:35:43,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914519574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:43,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672877776] [2022-03-01 15:35:43,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:35:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:43,839 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:43,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 15:35:43,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:35:43,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:35:43,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:35:43,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:44,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:44,042 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 15:35:44,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-01 15:35:44,167 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-01 15:35:44,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-01 15:35:44,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:35:44,599 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-01 15:35:44,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-01 15:35:44,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:44,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:44,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:35:45,350 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:35:45,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:35:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:35:45,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:35:45,860 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1498))) (let ((.cse1 (select .cse3 ~get2~0.base)) (.cse0 (select .cse3 c_~get1~0.base))) (or (<= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2)))))))) is different from false [2022-03-01 15:35:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:35:46,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672877776] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:35:46,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:35:46,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-01 15:35:46,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699342161] [2022-03-01 15:35:46,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:35:46,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-01 15:35:46,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-01 15:35:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-03-01 15:35:46,005 INFO L87 Difference]: Start difference. First operand 13857 states and 39621 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:50,318 INFO L93 Difference]: Finished difference Result 34988 states and 100937 transitions. [2022-03-01 15:35:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:35:50,319 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:50,383 INFO L225 Difference]: With dead ends: 34988 [2022-03-01 15:35:50,383 INFO L226 Difference]: Without dead ends: 34988 [2022-03-01 15:35:50,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2031, Invalid=9528, Unknown=1, NotChecked=212, Total=11772 [2022-03-01 15:35:50,384 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 3811 mSDsluCounter, 13606 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3811 SdHoareTripleChecker+Valid, 13847 SdHoareTripleChecker+Invalid, 5279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1606 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:50,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3811 Valid, 13847 Invalid, 5279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3611 Invalid, 0 Unknown, 1606 Unchecked, 1.4s Time] [2022-03-01 15:35:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34988 states. [2022-03-01 15:35:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34988 to 16569. [2022-03-01 15:35:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16569 states, 16568 states have (on average 2.8684814099468854) internal successors, (47525), 16568 states have internal predecessors, (47525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16569 states to 16569 states and 47525 transitions. [2022-03-01 15:35:50,735 INFO L78 Accepts]: Start accepts. Automaton has 16569 states and 47525 transitions. Word has length 177 [2022-03-01 15:35:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:50,735 INFO L470 AbstractCegarLoop]: Abstraction has 16569 states and 47525 transitions. [2022-03-01 15:35:50,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 16569 states and 47525 transitions. [2022-03-01 15:35:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:50,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:50,757 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] [2022-03-01 15:35:50,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-01 15:35:50,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:50,958 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:50,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1010134096, now seen corresponding path program 14 times [2022-03-01 15:35:50,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:50,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90841121] [2022-03-01 15:35:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:50,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:51,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:51,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90841121] [2022-03-01 15:35:51,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90841121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:51,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987403222] [2022-03-01 15:35:51,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:35:51,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:51,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:51,300 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:51,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 15:35:51,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:35:51,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:35:51,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-01 15:35:51,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:51,826 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:35:51,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:35:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:51,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:35:52,119 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-01 15:35:52,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-01 15:35:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:52,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987403222] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:35:52,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:35:52,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 30 [2022-03-01 15:35:52,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939846955] [2022-03-01 15:35:52,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:35:52,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 15:35:52,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:52,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 15:35:52,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-03-01 15:35:52,280 INFO L87 Difference]: Start difference. First operand 16569 states and 47525 transitions. Second operand has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:53,591 INFO L93 Difference]: Finished difference Result 35449 states and 102230 transitions. [2022-03-01 15:35:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 15:35:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:53,655 INFO L225 Difference]: With dead ends: 35449 [2022-03-01 15:35:53,655 INFO L226 Difference]: Without dead ends: 35449 [2022-03-01 15:35:53,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=783, Invalid=2999, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:35:53,656 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1938 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:53,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 7164 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1558 Invalid, 0 Unknown, 290 Unchecked, 0.6s Time] [2022-03-01 15:35:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35449 states. [2022-03-01 15:35:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35449 to 17289. [2022-03-01 15:35:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17289 states, 17288 states have (on average 2.8649352151781584) internal successors, (49529), 17288 states have internal predecessors, (49529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17289 states to 17289 states and 49529 transitions. [2022-03-01 15:35:54,015 INFO L78 Accepts]: Start accepts. Automaton has 17289 states and 49529 transitions. Word has length 177 [2022-03-01 15:35:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:54,015 INFO L470 AbstractCegarLoop]: Abstraction has 17289 states and 49529 transitions. [2022-03-01 15:35:54,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17289 states and 49529 transitions. [2022-03-01 15:35:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:54,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:54,039 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] [2022-03-01 15:35:54,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 15:35:54,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:54,239 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -219886214, now seen corresponding path program 13 times [2022-03-01 15:35:54,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:54,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337056068] [2022-03-01 15:35:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:54,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:54,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:54,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337056068] [2022-03-01 15:35:54,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337056068] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:54,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:54,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:54,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683056438] [2022-03-01 15:35:54,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:54,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:54,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:54,626 INFO L87 Difference]: Start difference. First operand 17289 states and 49529 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:55,482 INFO L93 Difference]: Finished difference Result 30015 states and 86391 transitions. [2022-03-01 15:35:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:35:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:55,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:55,537 INFO L225 Difference]: With dead ends: 30015 [2022-03-01 15:35:55,537 INFO L226 Difference]: Without dead ends: 30015 [2022-03-01 15:35:55,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:35:55,537 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1046 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:55,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 4578 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:35:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30015 states. [2022-03-01 15:35:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30015 to 17305. [2022-03-01 15:35:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-01 15:35:55,862 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-01 15:35:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:55,863 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-01 15:35:55,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-01 15:35:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:55,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:55,885 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, 1, 1, 1, 1] [2022-03-01 15:35:55,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-01 15:35:55,886 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash 652336600, now seen corresponding path program 14 times [2022-03-01 15:35:55,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:55,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686380776] [2022-03-01 15:35:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:55,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:56,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:56,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686380776] [2022-03-01 15:35:56,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686380776] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:56,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:56,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:35:56,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661712117] [2022-03-01 15:35:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:56,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:35:56,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:35:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:35:56,244 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:56,955 INFO L93 Difference]: Finished difference Result 26780 states and 77304 transitions. [2022-03-01 15:35:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:57,006 INFO L225 Difference]: With dead ends: 26780 [2022-03-01 15:35:57,006 INFO L226 Difference]: Without dead ends: 26780 [2022-03-01 15:35:57,007 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 [2022-03-01 15:35:57,007 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1057 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:57,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 3581 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2022-03-01 15:35:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 17313. [2022-03-01 15:35:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 2.866162199630314) internal successors, (49619), 17312 states have internal predecessors, (49619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 49619 transitions. [2022-03-01 15:35:57,317 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 49619 transitions. Word has length 177 [2022-03-01 15:35:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:57,317 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 49619 transitions. [2022-03-01 15:35:57,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 49619 transitions. [2022-03-01 15:35:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:57,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:57,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:35:57,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-01 15:35:57,341 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1447008256, now seen corresponding path program 16 times [2022-03-01 15:35:57,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:57,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181626925] [2022-03-01 15:35:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:57,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:57,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181626925] [2022-03-01 15:35:57,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181626925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:35:57,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:35:57,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:35:57,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397463852] [2022-03-01 15:35:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:35:57,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:35:57,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:35:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:35:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:35:57,727 INFO L87 Difference]: Start difference. First operand 17313 states and 49619 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:35:58,401 INFO L93 Difference]: Finished difference Result 26444 states and 76272 transitions. [2022-03-01 15:35:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:35:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:35:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:35:58,450 INFO L225 Difference]: With dead ends: 26444 [2022-03-01 15:35:58,450 INFO L226 Difference]: Without dead ends: 26444 [2022-03-01 15:35:58,450 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 [2022-03-01 15:35:58,451 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 987 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:35:58,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 3148 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:35:58,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26444 states. [2022-03-01 15:35:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26444 to 17345. [2022-03-01 15:35:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17345 states, 17344 states have (on average 2.8659478782287824) internal successors, (49707), 17344 states have internal predecessors, (49707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 49707 transitions. [2022-03-01 15:35:58,763 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 49707 transitions. Word has length 177 [2022-03-01 15:35:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:35:58,764 INFO L470 AbstractCegarLoop]: Abstraction has 17345 states and 49707 transitions. [2022-03-01 15:35:58,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:35:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 49707 transitions. [2022-03-01 15:35:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:35:58,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:35:58,786 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] [2022-03-01 15:35:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-01 15:35:58,786 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:35:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:35:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1040334356, now seen corresponding path program 17 times [2022-03-01 15:35:58,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:35:58,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128589136] [2022-03-01 15:35:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:35:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:35:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:35:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:35:59,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:35:59,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128589136] [2022-03-01 15:35:59,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128589136] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:35:59,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028819976] [2022-03-01 15:35:59,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:35:59,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:35:59,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:35:59,124 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:35:59,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 15:35:59,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:35:59,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:35:59,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-01 15:35:59,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:35:59,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:35:59,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:00,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:00,299 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:36:00,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:36:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:36:00,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:00,604 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1614 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1614))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-01 15:36:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:36:00,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028819976] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:00,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:00,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 47 [2022-03-01 15:36:00,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963882127] [2022-03-01 15:36:00,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:00,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 15:36:00,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 15:36:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1869, Unknown=1, NotChecked=88, Total=2162 [2022-03-01 15:36:00,719 INFO L87 Difference]: Start difference. First operand 17345 states and 49707 transitions. Second operand has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:03,743 INFO L93 Difference]: Finished difference Result 30265 states and 87287 transitions. [2022-03-01 15:36:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 15:36:03,744 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:03,803 INFO L225 Difference]: With dead ends: 30265 [2022-03-01 15:36:03,803 INFO L226 Difference]: Without dead ends: 30265 [2022-03-01 15:36:03,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1852, Invalid=7081, Unknown=1, NotChecked=186, Total=9120 [2022-03-01 15:36:03,804 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 2908 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 893 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:03,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2908 Valid, 5723 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1963 Invalid, 0 Unknown, 893 Unchecked, 0.8s Time] [2022-03-01 15:36:03,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30265 states. [2022-03-01 15:36:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30265 to 17327. [2022-03-01 15:36:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17327 states, 17326 states have (on average 2.865808611335565) internal successors, (49653), 17326 states have internal predecessors, (49653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17327 states to 17327 states and 49653 transitions. [2022-03-01 15:36:04,139 INFO L78 Accepts]: Start accepts. Automaton has 17327 states and 49653 transitions. Word has length 177 [2022-03-01 15:36:04,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:04,139 INFO L470 AbstractCegarLoop]: Abstraction has 17327 states and 49653 transitions. [2022-03-01 15:36:04,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 17327 states and 49653 transitions. [2022-03-01 15:36:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:04,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:04,163 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] [2022-03-01 15:36:04,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 15:36:04,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:04,364 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1804088130, now seen corresponding path program 15 times [2022-03-01 15:36:04,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:04,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998374931] [2022-03-01 15:36:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:04,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:04,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998374931] [2022-03-01 15:36:04,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998374931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:04,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:04,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:04,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631300788] [2022-03-01 15:36:04,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:04,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:04,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:04,710 INFO L87 Difference]: Start difference. First operand 17327 states and 49653 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:05,284 INFO L93 Difference]: Finished difference Result 26344 states and 75932 transitions. [2022-03-01 15:36:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 15:36:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:05,334 INFO L225 Difference]: With dead ends: 26344 [2022-03-01 15:36:05,334 INFO L226 Difference]: Without dead ends: 26344 [2022-03-01 15:36:05,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 15:36:05,335 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 974 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:05,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 2748 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26344 states. [2022-03-01 15:36:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26344 to 17343. [2022-03-01 15:36:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 2.8666243801176337) internal successors, (49713), 17342 states have internal predecessors, (49713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 49713 transitions. [2022-03-01 15:36:05,640 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 49713 transitions. Word has length 177 [2022-03-01 15:36:05,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:05,640 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 49713 transitions. [2022-03-01 15:36:05,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 49713 transitions. [2022-03-01 15:36:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:05,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:05,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:05,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-01 15:36:05,663 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1438045892, now seen corresponding path program 18 times [2022-03-01 15:36:05,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:05,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18175048] [2022-03-01 15:36:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:06,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:06,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18175048] [2022-03-01 15:36:06,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18175048] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:06,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:06,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:06,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334905014] [2022-03-01 15:36:06,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:06,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:06,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:06,012 INFO L87 Difference]: Start difference. First operand 17343 states and 49713 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:06,617 INFO L93 Difference]: Finished difference Result 26188 states and 75512 transitions. [2022-03-01 15:36:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 15:36:06,618 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 [2022-03-01 15:36:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:06,666 INFO L225 Difference]: With dead ends: 26188 [2022-03-01 15:36:06,666 INFO L226 Difference]: Without dead ends: 26188 [2022-03-01 15:36:06,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:36:06,667 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 823 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:06,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 3200 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2022-03-01 15:36:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 17351. [2022-03-01 15:36:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17351 states, 17350 states have (on average 2.86657060518732) internal successors, (49735), 17350 states have internal predecessors, (49735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 49735 transitions. [2022-03-01 15:36:07,028 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 49735 transitions. Word has length 177 [2022-03-01 15:36:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:07,029 INFO L470 AbstractCegarLoop]: Abstraction has 17351 states and 49735 transitions. [2022-03-01 15:36:07,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 49735 transitions. [2022-03-01 15:36:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:07,051 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:07,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:07,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-01 15:36:07,052 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1165514494, now seen corresponding path program 19 times [2022-03-01 15:36:07,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:07,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741757184] [2022-03-01 15:36:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:07,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:07,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:07,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741757184] [2022-03-01 15:36:07,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741757184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:07,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:07,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:07,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745401531] [2022-03-01 15:36:07,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:07,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:07,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:07,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:07,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:07,383 INFO L87 Difference]: Start difference. First operand 17351 states and 49735 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:08,043 INFO L93 Difference]: Finished difference Result 25888 states and 74536 transitions. [2022-03-01 15:36:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:36:08,044 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:08,090 INFO L225 Difference]: With dead ends: 25888 [2022-03-01 15:36:08,090 INFO L226 Difference]: Without dead ends: 25888 [2022-03-01 15:36:08,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:36:08,090 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 1123 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:08,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3143 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25888 states. [2022-03-01 15:36:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25888 to 17343. [2022-03-01 15:36:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 2.8666243801176337) internal successors, (49713), 17342 states have internal predecessors, (49713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 49713 transitions. [2022-03-01 15:36:08,383 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 49713 transitions. Word has length 177 [2022-03-01 15:36:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:08,384 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 49713 transitions. [2022-03-01 15:36:08,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:08,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 49713 transitions. [2022-03-01 15:36:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:08,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:08,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:08,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-01 15:36:08,407 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1629089236, now seen corresponding path program 13 times [2022-03-01 15:36:08,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:08,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917908816] [2022-03-01 15:36:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:08,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:08,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917908816] [2022-03-01 15:36:08,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917908816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:08,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:08,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:08,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683789427] [2022-03-01 15:36:08,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:08,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:08,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:08,738 INFO L87 Difference]: Start difference. First operand 17343 states and 49713 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:09,341 INFO L93 Difference]: Finished difference Result 25944 states and 74674 transitions. [2022-03-01 15:36:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:36:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:09,390 INFO L225 Difference]: With dead ends: 25944 [2022-03-01 15:36:09,390 INFO L226 Difference]: Without dead ends: 25944 [2022-03-01 15:36:09,390 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 [2022-03-01 15:36:09,390 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1160 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:09,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 2748 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25944 states. [2022-03-01 15:36:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25944 to 17357. [2022-03-01 15:36:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 17356 states have (on average 2.8655796266420834) internal successors, (49735), 17356 states have internal predecessors, (49735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 49735 transitions. [2022-03-01 15:36:09,689 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 49735 transitions. Word has length 177 [2022-03-01 15:36:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:09,689 INFO L470 AbstractCegarLoop]: Abstraction has 17357 states and 49735 transitions. [2022-03-01 15:36:09,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 49735 transitions. [2022-03-01 15:36:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:09,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:09,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:09,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-01 15:36:09,712 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1611715648, now seen corresponding path program 20 times [2022-03-01 15:36:09,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:09,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418909580] [2022-03-01 15:36:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:10,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:10,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418909580] [2022-03-01 15:36:10,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418909580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:10,044 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:10,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:10,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551193062] [2022-03-01 15:36:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:10,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:10,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:10,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:10,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:10,045 INFO L87 Difference]: Start difference. First operand 17357 states and 49735 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:10,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:10,767 INFO L93 Difference]: Finished difference Result 26310 states and 75678 transitions. [2022-03-01 15:36:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:36:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:10,815 INFO L225 Difference]: With dead ends: 26310 [2022-03-01 15:36:10,816 INFO L226 Difference]: Without dead ends: 26310 [2022-03-01 15:36:10,816 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 [2022-03-01 15:36:10,816 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 946 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:10,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3370 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26310 states. [2022-03-01 15:36:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26310 to 17413. [2022-03-01 15:36:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17413 states, 17412 states have (on average 2.865552492533885) internal successors, (49895), 17412 states have internal predecessors, (49895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 49895 transitions. [2022-03-01 15:36:11,109 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 49895 transitions. Word has length 177 [2022-03-01 15:36:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:11,109 INFO L470 AbstractCegarLoop]: Abstraction has 17413 states and 49895 transitions. [2022-03-01 15:36:11,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 49895 transitions. [2022-03-01 15:36:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:11,131 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:11,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:11,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-01 15:36:11,131 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2018389548, now seen corresponding path program 21 times [2022-03-01 15:36:11,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:11,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787530144] [2022-03-01 15:36:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:11,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:11,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787530144] [2022-03-01 15:36:11,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787530144] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:36:11,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095380366] [2022-03-01 15:36:11,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:36:11,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:11,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:36:11,463 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:36:11,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 15:36:11,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:36:11,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:36:11,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:36:11,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:36:11,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:11,644 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 15:36:11,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-01 15:36:11,771 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-01 15:36:11,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-01 15:36:11,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:36:12,194 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-01 15:36:12,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-01 15:36:12,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:12,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:12,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:12,954 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:36:12,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:36:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:36:13,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:13,429 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1734 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1734))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1)))) (<= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-01 15:36:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:36:13,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095380366] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:13,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:13,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-01 15:36:13,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993264097] [2022-03-01 15:36:13,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:13,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-01 15:36:13,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-01 15:36:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-03-01 15:36:13,544 INFO L87 Difference]: Start difference. First operand 17413 states and 49895 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:18,313 INFO L93 Difference]: Finished difference Result 44581 states and 127446 transitions. [2022-03-01 15:36:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 15:36:18,313 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:18,400 INFO L225 Difference]: With dead ends: 44581 [2022-03-01 15:36:18,400 INFO L226 Difference]: Without dead ends: 44581 [2022-03-01 15:36:18,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2432, Invalid=11143, Unknown=1, NotChecked=230, Total=13806 [2022-03-01 15:36:18,401 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 3664 mSDsluCounter, 12016 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 12326 SdHoareTripleChecker+Invalid, 5433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2009 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:18,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3664 Valid, 12326 Invalid, 5433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3370 Invalid, 0 Unknown, 2009 Unchecked, 1.4s Time] [2022-03-01 15:36:18,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44581 states. [2022-03-01 15:36:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44581 to 19551. [2022-03-01 15:36:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19551 states, 19550 states have (on average 2.870230179028133) internal successors, (56113), 19550 states have internal predecessors, (56113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 56113 transitions. [2022-03-01 15:36:18,879 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 56113 transitions. Word has length 177 [2022-03-01 15:36:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:18,880 INFO L470 AbstractCegarLoop]: Abstraction has 19551 states and 56113 transitions. [2022-03-01 15:36:18,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 56113 transitions. [2022-03-01 15:36:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:18,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:18,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:18,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 15:36:19,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:19,106 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1865483718, now seen corresponding path program 15 times [2022-03-01 15:36:19,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:19,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99008536] [2022-03-01 15:36:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:19,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:19,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99008536] [2022-03-01 15:36:19,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99008536] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:36:19,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813860098] [2022-03-01 15:36:19,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:36:19,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:19,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:36:19,407 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:36:19,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 15:36:19,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:36:19,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:36:19,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:36:19,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:36:19,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:19,588 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 15:36:19,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-01 15:36:19,716 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-01 15:36:19,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-01 15:36:19,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:36:20,142 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-01 15:36:20,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-01 15:36:20,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:20,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:20,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:20,686 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:36:20,686 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 [2022-03-01 15:36:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:36:20,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:21,049 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1774))) (let ((.cse0 (select .cse3 ~get2~0.base)) (.cse1 (select .cse3 c_~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-01 15:36:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:36:21,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813860098] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:21,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:21,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-01 15:36:21,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810783315] [2022-03-01 15:36:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:21,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-01 15:36:21,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-01 15:36:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2157, Unknown=1, NotChecked=94, Total=2450 [2022-03-01 15:36:21,166 INFO L87 Difference]: Start difference. First operand 19551 states and 56113 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:24,829 INFO L93 Difference]: Finished difference Result 43186 states and 124503 transitions. [2022-03-01 15:36:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 15:36:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:24,919 INFO L225 Difference]: With dead ends: 43186 [2022-03-01 15:36:24,919 INFO L226 Difference]: Without dead ends: 43186 [2022-03-01 15:36:24,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 335 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2108, Invalid=8401, Unknown=1, NotChecked=202, Total=10712 [2022-03-01 15:36:24,920 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 3282 mSDsluCounter, 9717 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 9907 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1428 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:24,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3282 Valid, 9907 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2797 Invalid, 0 Unknown, 1428 Unchecked, 1.1s Time] [2022-03-01 15:36:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43186 states. [2022-03-01 15:36:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43186 to 17743. [2022-03-01 15:36:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17743 states, 17742 states have (on average 2.8531732611881413) internal successors, (50621), 17742 states have internal predecessors, (50621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17743 states to 17743 states and 50621 transitions. [2022-03-01 15:36:25,377 INFO L78 Accepts]: Start accepts. Automaton has 17743 states and 50621 transitions. Word has length 177 [2022-03-01 15:36:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:25,377 INFO L470 AbstractCegarLoop]: Abstraction has 17743 states and 50621 transitions. [2022-03-01 15:36:25,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17743 states and 50621 transitions. [2022-03-01 15:36:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:25,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:25,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:25,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 15:36:25,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:25,603 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1914474352, now seen corresponding path program 16 times [2022-03-01 15:36:25,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:25,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431854062] [2022-03-01 15:36:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:25,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:25,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:25,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431854062] [2022-03-01 15:36:25,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431854062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:25,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:25,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:25,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273302350] [2022-03-01 15:36:25,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:25,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:25,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:25,991 INFO L87 Difference]: Start difference. First operand 17743 states and 50621 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:26,894 INFO L93 Difference]: Finished difference Result 30803 states and 88387 transitions. [2022-03-01 15:36:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:36:26,894 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:26,951 INFO L225 Difference]: With dead ends: 30803 [2022-03-01 15:36:26,952 INFO L226 Difference]: Without dead ends: 30803 [2022-03-01 15:36:26,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 15:36:26,952 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1092 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:26,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 3859 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30803 states. [2022-03-01 15:36:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30803 to 17775. [2022-03-01 15:36:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17775 states, 17774 states have (on average 2.8538877011364914) internal successors, (50725), 17774 states have internal predecessors, (50725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17775 states to 17775 states and 50725 transitions. [2022-03-01 15:36:27,290 INFO L78 Accepts]: Start accepts. Automaton has 17775 states and 50725 transitions. Word has length 177 [2022-03-01 15:36:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:27,291 INFO L470 AbstractCegarLoop]: Abstraction has 17775 states and 50725 transitions. [2022-03-01 15:36:27,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 17775 states and 50725 transitions. [2022-03-01 15:36:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:27,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:27,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:27,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-01 15:36:27,314 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1042251538, now seen corresponding path program 17 times [2022-03-01 15:36:27,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:27,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085739520] [2022-03-01 15:36:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:27,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:27,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085739520] [2022-03-01 15:36:27,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085739520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:27,664 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:27,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:27,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059857638] [2022-03-01 15:36:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:27,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:27,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:27,665 INFO L87 Difference]: Start difference. First operand 17775 states and 50725 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:28,393 INFO L93 Difference]: Finished difference Result 27832 states and 80090 transitions. [2022-03-01 15:36:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:36:28,394 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:28,445 INFO L225 Difference]: With dead ends: 27832 [2022-03-01 15:36:28,446 INFO L226 Difference]: Without dead ends: 27832 [2022-03-01 15:36:28,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:36:28,446 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1119 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:28,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 3420 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27832 states. [2022-03-01 15:36:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27832 to 17783. [2022-03-01 15:36:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17783 states, 17782 states have (on average 2.8542908559217186) internal successors, (50755), 17782 states have internal predecessors, (50755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 50755 transitions. [2022-03-01 15:36:28,767 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 50755 transitions. Word has length 177 [2022-03-01 15:36:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:28,767 INFO L470 AbstractCegarLoop]: Abstraction has 17783 states and 50755 transitions. [2022-03-01 15:36:28,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 50755 transitions. [2022-03-01 15:36:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:28,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:28,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:28,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-01 15:36:28,791 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1153370902, now seen corresponding path program 22 times [2022-03-01 15:36:28,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:28,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638739653] [2022-03-01 15:36:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:29,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:29,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638739653] [2022-03-01 15:36:29,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638739653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:29,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:29,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:29,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047568864] [2022-03-01 15:36:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:29,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:29,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:29,130 INFO L87 Difference]: Start difference. First operand 17783 states and 50755 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:29,871 INFO L93 Difference]: Finished difference Result 27496 states and 79058 transitions. [2022-03-01 15:36:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:36:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:29,929 INFO L225 Difference]: With dead ends: 27496 [2022-03-01 15:36:29,929 INFO L226 Difference]: Without dead ends: 27496 [2022-03-01 15:36:29,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:36:29,930 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1032 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:29,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3265 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27496 states. [2022-03-01 15:36:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27496 to 17815. [2022-03-01 15:36:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17815 states, 17814 states have (on average 2.8541035140900415) internal successors, (50843), 17814 states have internal predecessors, (50843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17815 states to 17815 states and 50843 transitions. [2022-03-01 15:36:30,271 INFO L78 Accepts]: Start accepts. Automaton has 17815 states and 50843 transitions. Word has length 177 [2022-03-01 15:36:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:30,271 INFO L470 AbstractCegarLoop]: Abstraction has 17815 states and 50843 transitions. [2022-03-01 15:36:30,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 17815 states and 50843 transitions. [2022-03-01 15:36:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:30,295 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:30,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:30,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-01 15:36:30,295 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1560044802, now seen corresponding path program 23 times [2022-03-01 15:36:30,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:30,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962602662] [2022-03-01 15:36:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:30,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:30,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:30,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962602662] [2022-03-01 15:36:30,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962602662] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:36:30,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036776012] [2022-03-01 15:36:30,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:36:30,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:36:30,648 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:36:30,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 15:36:30,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:36:30,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:36:30,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-01 15:36:30,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:36:31,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:36:31,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:31,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:31,787 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:36:31,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:36:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:36:31,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:32,115 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1858 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1858))) (let ((.cse2 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse2 c_~get2~0.offset) (select .cse0 c_~get1~0.offset)))))) is different from false [2022-03-01 15:36:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:36:32,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036776012] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:32,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:32,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-03-01 15:36:32,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075627842] [2022-03-01 15:36:32,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:32,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 15:36:32,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 15:36:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1786, Unknown=1, NotChecked=86, Total=2070 [2022-03-01 15:36:32,227 INFO L87 Difference]: Start difference. First operand 17815 states and 50843 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:35,908 INFO L93 Difference]: Finished difference Result 32411 states and 93213 transitions. [2022-03-01 15:36:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 15:36:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:35,970 INFO L225 Difference]: With dead ends: 32411 [2022-03-01 15:36:35,970 INFO L226 Difference]: Without dead ends: 32411 [2022-03-01 15:36:35,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 338 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2116, Invalid=7987, Unknown=1, NotChecked=198, Total=10302 [2022-03-01 15:36:35,972 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2637 mSDsluCounter, 7657 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 7936 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 754 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:35,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2637 Valid, 7936 Invalid, 3465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2664 Invalid, 0 Unknown, 754 Unchecked, 1.1s Time] [2022-03-01 15:36:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32411 states. [2022-03-01 15:36:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32411 to 17783. [2022-03-01 15:36:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17783 states, 17782 states have (on average 2.8542908559217186) internal successors, (50755), 17782 states have internal predecessors, (50755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 50755 transitions. [2022-03-01 15:36:36,401 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 50755 transitions. Word has length 177 [2022-03-01 15:36:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:36,401 INFO L470 AbstractCegarLoop]: Abstraction has 17783 states and 50755 transitions. [2022-03-01 15:36:36,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 50755 transitions. [2022-03-01 15:36:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:36,423 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:36,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:36,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 15:36:36,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-01 15:36:36,624 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:36,625 INFO L85 PathProgramCache]: Analyzing trace with hash 796291028, now seen corresponding path program 18 times [2022-03-01 15:36:36,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:36,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387153677] [2022-03-01 15:36:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:36,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:36,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:36,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387153677] [2022-03-01 15:36:36,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387153677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:36,974 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:36,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:36,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494141928] [2022-03-01 15:36:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:36,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:36,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:36,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:36,974 INFO L87 Difference]: Start difference. First operand 17783 states and 50755 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:37,650 INFO L93 Difference]: Finished difference Result 27398 states and 78728 transitions. [2022-03-01 15:36:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:36:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:37,700 INFO L225 Difference]: With dead ends: 27398 [2022-03-01 15:36:37,701 INFO L226 Difference]: Without dead ends: 27398 [2022-03-01 15:36:37,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:36:37,701 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 946 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:37,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3495 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27398 states. [2022-03-01 15:36:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27398 to 17799. [2022-03-01 15:36:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 17798 states have (on average 2.855096078211035) internal successors, (50815), 17798 states have internal predecessors, (50815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 50815 transitions. [2022-03-01 15:36:38,010 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 50815 transitions. Word has length 177 [2022-03-01 15:36:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:38,010 INFO L470 AbstractCegarLoop]: Abstraction has 17799 states and 50815 transitions. [2022-03-01 15:36:38,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 50815 transitions. [2022-03-01 15:36:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:38,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:38,033 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] [2022-03-01 15:36:38,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-01 15:36:38,034 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash -256542246, now seen corresponding path program 24 times [2022-03-01 15:36:38,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:38,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451103956] [2022-03-01 15:36:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:38,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:38,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451103956] [2022-03-01 15:36:38,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451103956] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:38,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:38,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:38,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467045401] [2022-03-01 15:36:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:38,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:38,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:38,370 INFO L87 Difference]: Start difference. First operand 17799 states and 50815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:39,010 INFO L93 Difference]: Finished difference Result 27368 states and 78650 transitions. [2022-03-01 15:36:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:36:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:39,060 INFO L225 Difference]: With dead ends: 27368 [2022-03-01 15:36:39,060 INFO L226 Difference]: Without dead ends: 27368 [2022-03-01 15:36:39,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:36:39,061 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 817 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:39,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3049 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27368 states. [2022-03-01 15:36:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27368 to 17807. [2022-03-01 15:36:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17806 states have (on average 2.8550488599348536) internal successors, (50837), 17806 states have internal predecessors, (50837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 50837 transitions. [2022-03-01 15:36:39,393 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 50837 transitions. Word has length 177 [2022-03-01 15:36:39,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:39,393 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 50837 transitions. [2022-03-01 15:36:39,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 50837 transitions. [2022-03-01 15:36:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:39,417 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:39,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:39,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-01 15:36:39,417 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -529073644, now seen corresponding path program 25 times [2022-03-01 15:36:39,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:39,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977463251] [2022-03-01 15:36:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:39,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:39,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977463251] [2022-03-01 15:36:39,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977463251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:39,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:39,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:39,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816642378] [2022-03-01 15:36:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:39,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:39,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:39,770 INFO L87 Difference]: Start difference. First operand 17807 states and 50837 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:40,472 INFO L93 Difference]: Finished difference Result 27198 states and 78180 transitions. [2022-03-01 15:36:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:36:40,472 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:40,522 INFO L225 Difference]: With dead ends: 27198 [2022-03-01 15:36:40,523 INFO L226 Difference]: Without dead ends: 27198 [2022-03-01 15:36:40,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:36:40,523 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1446 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:40,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2929 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27198 states. [2022-03-01 15:36:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27198 to 17799. [2022-03-01 15:36:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 17798 states have (on average 2.855096078211035) internal successors, (50815), 17798 states have internal predecessors, (50815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 50815 transitions. [2022-03-01 15:36:40,826 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 50815 transitions. Word has length 177 [2022-03-01 15:36:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:40,826 INFO L470 AbstractCegarLoop]: Abstraction has 17799 states and 50815 transitions. [2022-03-01 15:36:40,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 50815 transitions. [2022-03-01 15:36:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:40,849 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:40,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:40,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-01 15:36:40,850 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:40,850 INFO L85 PathProgramCache]: Analyzing trace with hash -65498902, now seen corresponding path program 14 times [2022-03-01 15:36:40,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:40,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713435280] [2022-03-01 15:36:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:40,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:41,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:41,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713435280] [2022-03-01 15:36:41,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713435280] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:41,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:41,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:41,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000513049] [2022-03-01 15:36:41,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:41,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:41,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:41,208 INFO L87 Difference]: Start difference. First operand 17799 states and 50815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:41,979 INFO L93 Difference]: Finished difference Result 27318 states and 78518 transitions. [2022-03-01 15:36:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:36:41,980 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:42,031 INFO L225 Difference]: With dead ends: 27318 [2022-03-01 15:36:42,032 INFO L226 Difference]: Without dead ends: 27318 [2022-03-01 15:36:42,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:36:42,032 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1178 mSDsluCounter, 3783 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:42,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 4086 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27318 states. [2022-03-01 15:36:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27318 to 17807. [2022-03-01 15:36:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17806 states have (on average 2.853700999663035) internal successors, (50813), 17806 states have internal predecessors, (50813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 50813 transitions. [2022-03-01 15:36:42,339 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 50813 transitions. Word has length 177 [2022-03-01 15:36:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:42,339 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 50813 transitions. [2022-03-01 15:36:42,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 50813 transitions. [2022-03-01 15:36:42,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:42,363 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:42,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:42,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-01 15:36:42,363 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:42,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash -82872490, now seen corresponding path program 26 times [2022-03-01 15:36:42,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:42,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921512751] [2022-03-01 15:36:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:42,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:42,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:42,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921512751] [2022-03-01 15:36:42,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921512751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:42,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:42,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:42,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895055386] [2022-03-01 15:36:42,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:42,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:42,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:42,762 INFO L87 Difference]: Start difference. First operand 17807 states and 50813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:43,500 INFO L93 Difference]: Finished difference Result 28192 states and 80964 transitions. [2022-03-01 15:36:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:36:43,501 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:43,553 INFO L225 Difference]: With dead ends: 28192 [2022-03-01 15:36:43,553 INFO L226 Difference]: Without dead ends: 28192 [2022-03-01 15:36:43,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:36:43,554 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1107 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:43,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 3238 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28192 states. [2022-03-01 15:36:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28192 to 17871. [2022-03-01 15:36:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 17870 states have (on average 2.853329602686066) internal successors, (50989), 17870 states have internal predecessors, (50989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 50989 transitions. [2022-03-01 15:36:43,863 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 50989 transitions. Word has length 177 [2022-03-01 15:36:43,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:43,863 INFO L470 AbstractCegarLoop]: Abstraction has 17871 states and 50989 transitions. [2022-03-01 15:36:43,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 50989 transitions. [2022-03-01 15:36:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:43,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:43,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:43,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-01 15:36:43,895 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 323801410, now seen corresponding path program 27 times [2022-03-01 15:36:43,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:43,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846912978] [2022-03-01 15:36:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:44,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:44,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846912978] [2022-03-01 15:36:44,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846912978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:36:44,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183623223] [2022-03-01 15:36:44,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:36:44,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:36:44,251 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:36:44,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 15:36:44,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:36:44,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:36:44,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-01 15:36:44,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:36:44,916 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:36:44,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-01 15:36:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:44,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:45,180 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-01 15:36:45,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 49 [2022-03-01 15:36:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:45,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183623223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:45,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:45,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 32 [2022-03-01 15:36:45,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283943736] [2022-03-01 15:36:45,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:45,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:36:45,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:36:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:36:45,333 INFO L87 Difference]: Start difference. First operand 17871 states and 50989 transitions. Second operand has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:47,010 INFO L93 Difference]: Finished difference Result 37467 states and 107671 transitions. [2022-03-01 15:36:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:36:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:47,086 INFO L225 Difference]: With dead ends: 37467 [2022-03-01 15:36:47,087 INFO L226 Difference]: Without dead ends: 37467 [2022-03-01 15:36:47,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=971, Invalid=3999, Unknown=0, NotChecked=0, Total=4970 [2022-03-01 15:36:47,088 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1444 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 8261 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 722 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:47,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 8261 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2029 Invalid, 0 Unknown, 722 Unchecked, 0.8s Time] [2022-03-01 15:36:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37467 states. [2022-03-01 15:36:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37467 to 19823. [2022-03-01 15:36:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19823 states, 19822 states have (on average 2.869387549187771) internal successors, (56877), 19822 states have internal predecessors, (56877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19823 states to 19823 states and 56877 transitions. [2022-03-01 15:36:47,482 INFO L78 Accepts]: Start accepts. Automaton has 19823 states and 56877 transitions. Word has length 177 [2022-03-01 15:36:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:47,482 INFO L470 AbstractCegarLoop]: Abstraction has 19823 states and 56877 transitions. [2022-03-01 15:36:47,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 19823 states and 56877 transitions. [2022-03-01 15:36:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:47,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:47,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:47,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-01 15:36:47,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-03-01 15:36:47,708 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash 734895440, now seen corresponding path program 16 times [2022-03-01 15:36:47,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:47,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387583164] [2022-03-01 15:36:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:48,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:48,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387583164] [2022-03-01 15:36:48,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387583164] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:36:48,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941111413] [2022-03-01 15:36:48,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:36:48,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:48,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:36:48,065 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:36:48,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 15:36:48,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:36:48,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:36:48,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-01 15:36:48,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:36:48,706 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 11 treesize of output 7 [2022-03-01 15:36:48,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:48,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:36:49,181 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:36:49,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:36:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:36:49,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:49,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_2006 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2006))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-01 15:36:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:36:49,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941111413] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:49,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:49,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-03-01 15:36:49,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181355210] [2022-03-01 15:36:49,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:49,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 15:36:49,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 15:36:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1705, Unknown=1, NotChecked=84, Total=1980 [2022-03-01 15:36:49,607 INFO L87 Difference]: Start difference. First operand 19823 states and 56877 transitions. Second operand has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:52,647 INFO L93 Difference]: Finished difference Result 43716 states and 126019 transitions. [2022-03-01 15:36:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:36:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:52,733 INFO L225 Difference]: With dead ends: 43716 [2022-03-01 15:36:52,733 INFO L226 Difference]: Without dead ends: 43716 [2022-03-01 15:36:52,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 337 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1752, Invalid=6623, Unknown=1, NotChecked=180, Total=8556 [2022-03-01 15:36:52,734 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 2856 mSDsluCounter, 7140 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1068 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:52,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 7400 Invalid, 3721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2610 Invalid, 0 Unknown, 1068 Unchecked, 1.0s Time] [2022-03-01 15:36:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43716 states. [2022-03-01 15:36:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43716 to 19303. [2022-03-01 15:36:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 2.869391772873277) internal successors, (55385), 19302 states have internal predecessors, (55385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 55385 transitions. [2022-03-01 15:36:53,296 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 55385 transitions. Word has length 177 [2022-03-01 15:36:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:53,296 INFO L470 AbstractCegarLoop]: Abstraction has 19303 states and 55385 transitions. [2022-03-01 15:36:53,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 55385 transitions. [2022-03-01 15:36:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:53,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:53,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:53,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-01 15:36:53,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:53,522 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 732676534, now seen corresponding path program 19 times [2022-03-01 15:36:53,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:53,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118984193] [2022-03-01 15:36:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:53,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:53,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118984193] [2022-03-01 15:36:53,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118984193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:53,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:53,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:36:53,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888486133] [2022-03-01 15:36:53,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:53,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:36:53,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:36:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:36:53,870 INFO L87 Difference]: Start difference. First operand 19303 states and 55385 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:54,577 INFO L93 Difference]: Finished difference Result 29034 states and 83720 transitions. [2022-03-01 15:36:54,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:36:54,577 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:54,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:54,632 INFO L225 Difference]: With dead ends: 29034 [2022-03-01 15:36:54,632 INFO L226 Difference]: Without dead ends: 29034 [2022-03-01 15:36:54,632 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 [2022-03-01 15:36:54,632 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 944 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:54,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 3231 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:36:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29034 states. [2022-03-01 15:36:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29034 to 19303. [2022-03-01 15:36:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 2.869391772873277) internal successors, (55385), 19302 states have internal predecessors, (55385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 55385 transitions. [2022-03-01 15:36:54,957 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 55385 transitions. Word has length 177 [2022-03-01 15:36:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:54,957 INFO L470 AbstractCegarLoop]: Abstraction has 19303 states and 55385 transitions. [2022-03-01 15:36:54,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 55385 transitions. [2022-03-01 15:36:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:54,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:54,983 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] [2022-03-01 15:36:54,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-01 15:36:54,983 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:54,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:54,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1840748610, now seen corresponding path program 17 times [2022-03-01 15:36:54,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:54,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065205961] [2022-03-01 15:36:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:55,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:55,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065205961] [2022-03-01 15:36:55,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065205961] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:36:55,320 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:36:55,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:36:55,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203968914] [2022-03-01 15:36:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:36:55,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:36:55,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:36:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:36:55,321 INFO L87 Difference]: Start difference. First operand 19303 states and 55385 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:55,971 INFO L93 Difference]: Finished difference Result 28618 states and 82436 transitions. [2022-03-01 15:36:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:36:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:56,025 INFO L225 Difference]: With dead ends: 28618 [2022-03-01 15:36:56,025 INFO L226 Difference]: Without dead ends: 28618 [2022-03-01 15:36:56,025 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 [2022-03-01 15:36:56,025 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 911 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:56,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2674 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:36:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28618 states. [2022-03-01 15:36:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28618 to 19311. [2022-03-01 15:36:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19310 states have (on average 2.869031589849819) internal successors, (55401), 19310 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 55401 transitions. [2022-03-01 15:36:56,361 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 55401 transitions. Word has length 177 [2022-03-01 15:36:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:56,361 INFO L470 AbstractCegarLoop]: Abstraction has 19311 states and 55401 transitions. [2022-03-01 15:36:56,361 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) [2022-03-01 15:36:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 55401 transitions. [2022-03-01 15:36:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:56,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:56,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:56,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-01 15:36:56,387 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:56,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash -597878358, now seen corresponding path program 18 times [2022-03-01 15:36:56,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:56,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69810047] [2022-03-01 15:36:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:36:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:56,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:36:56,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69810047] [2022-03-01 15:36:56,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69810047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:36:56,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588917292] [2022-03-01 15:36:56,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:36:56,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:56,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:36:56,719 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:36:56,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 15:36:56,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:36:56,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:36:56,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-01 15:36:56,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:36:57,269 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:36:57,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:36:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:57,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:36:57,512 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-01 15:36:57,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-01 15:36:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:36:57,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588917292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:36:57,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:36:57,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-03-01 15:36:57,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481853275] [2022-03-01 15:36:57,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:36:57,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 15:36:57,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:36:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 15:36:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-03-01 15:36:57,655 INFO L87 Difference]: Start difference. First operand 19311 states and 55401 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:36:59,221 INFO L93 Difference]: Finished difference Result 32416 states and 93767 transitions. [2022-03-01 15:36:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:36:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:36:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:36:59,289 INFO L225 Difference]: With dead ends: 32416 [2022-03-01 15:36:59,289 INFO L226 Difference]: Without dead ends: 32416 [2022-03-01 15:36:59,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 357 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=936, Invalid=3620, Unknown=0, NotChecked=0, Total=4556 [2022-03-01 15:36:59,290 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1753 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:36:59,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 5020 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1530 Invalid, 0 Unknown, 639 Unchecked, 0.6s Time] [2022-03-01 15:36:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32416 states. [2022-03-01 15:36:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32416 to 19367. [2022-03-01 15:36:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19367 states, 19366 states have (on average 2.86910048538676) internal successors, (55563), 19366 states have internal predecessors, (55563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19367 states to 19367 states and 55563 transitions. [2022-03-01 15:36:59,711 INFO L78 Accepts]: Start accepts. Automaton has 19367 states and 55563 transitions. Word has length 177 [2022-03-01 15:36:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:36:59,711 INFO L470 AbstractCegarLoop]: Abstraction has 19367 states and 55563 transitions. [2022-03-01 15:36:59,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:36:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 19367 states and 55563 transitions. [2022-03-01 15:36:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:36:59,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:36:59,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:36:59,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-01 15:36:59,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:36:59,940 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:36:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:36:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1723748196, now seen corresponding path program 20 times [2022-03-01 15:36:59,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:36:59,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65955022] [2022-03-01 15:36:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:36:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:36:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:00,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:00,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65955022] [2022-03-01 15:37:00,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65955022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:00,394 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:00,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:00,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692177387] [2022-03-01 15:37:00,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:00,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:00,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:00,395 INFO L87 Difference]: Start difference. First operand 19367 states and 55563 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:01,100 INFO L93 Difference]: Finished difference Result 28752 states and 82832 transitions. [2022-03-01 15:37:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:37:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:01,267 INFO L225 Difference]: With dead ends: 28752 [2022-03-01 15:37:01,267 INFO L226 Difference]: Without dead ends: 28752 [2022-03-01 15:37:01,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:37:01,267 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 867 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:01,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3003 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28752 states. [2022-03-01 15:37:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28752 to 19383. [2022-03-01 15:37:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19383 states, 19382 states have (on average 2.869827675162522) internal successors, (55623), 19382 states have internal predecessors, (55623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19383 states to 19383 states and 55623 transitions. [2022-03-01 15:37:01,560 INFO L78 Accepts]: Start accepts. Automaton has 19383 states and 55623 transitions. Word has length 177 [2022-03-01 15:37:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:01,560 INFO L470 AbstractCegarLoop]: Abstraction has 19383 states and 55623 transitions. [2022-03-01 15:37:01,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 19383 states and 55623 transitions. [2022-03-01 15:37:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:01,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:01,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:01,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-01 15:37:01,585 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:01,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1044305538, now seen corresponding path program 19 times [2022-03-01 15:37:01,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:01,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141218778] [2022-03-01 15:37:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:01,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:01,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141218778] [2022-03-01 15:37:01,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141218778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:01,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:01,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:37:01,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355244353] [2022-03-01 15:37:01,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:01,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:37:01,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:37:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:37:01,929 INFO L87 Difference]: Start difference. First operand 19383 states and 55623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:02,545 INFO L93 Difference]: Finished difference Result 28706 states and 82702 transitions. [2022-03-01 15:37:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:37:02,545 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:02,598 INFO L225 Difference]: With dead ends: 28706 [2022-03-01 15:37:02,598 INFO L226 Difference]: Without dead ends: 28706 [2022-03-01 15:37:02,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:37:02,599 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 946 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:02,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 2791 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28706 states. [2022-03-01 15:37:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28706 to 19391. [2022-03-01 15:37:02,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19391 states, 19390 states have (on average 2.869778236204229) internal successors, (55645), 19390 states have internal predecessors, (55645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19391 states to 19391 states and 55645 transitions. [2022-03-01 15:37:02,941 INFO L78 Accepts]: Start accepts. Automaton has 19391 states and 55645 transitions. Word has length 177 [2022-03-01 15:37:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:02,941 INFO L470 AbstractCegarLoop]: Abstraction has 19391 states and 55645 transitions. [2022-03-01 15:37:02,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 19391 states and 55645 transitions. [2022-03-01 15:37:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:02,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:02,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:02,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-01 15:37:02,968 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:02,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1245854428, now seen corresponding path program 28 times [2022-03-01 15:37:02,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:02,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144873297] [2022-03-01 15:37:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:02,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:03,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:03,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144873297] [2022-03-01 15:37:03,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144873297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:03,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:03,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:03,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135054849] [2022-03-01 15:37:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:03,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:03,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:03,329 INFO L87 Difference]: Start difference. First operand 19391 states and 55645 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:04,036 INFO L93 Difference]: Finished difference Result 28408 states and 81872 transitions. [2022-03-01 15:37:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:37:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:04,089 INFO L225 Difference]: With dead ends: 28408 [2022-03-01 15:37:04,089 INFO L226 Difference]: Without dead ends: 28408 [2022-03-01 15:37:04,089 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 [2022-03-01 15:37:04,089 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1050 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:04,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3328 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-03-01 15:37:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 19383. [2022-03-01 15:37:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19383 states, 19382 states have (on average 2.869827675162522) internal successors, (55623), 19382 states have internal predecessors, (55623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19383 states to 19383 states and 55623 transitions. [2022-03-01 15:37:04,410 INFO L78 Accepts]: Start accepts. Automaton has 19383 states and 55623 transitions. Word has length 177 [2022-03-01 15:37:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:04,410 INFO L470 AbstractCegarLoop]: Abstraction has 19383 states and 55623 transitions. [2022-03-01 15:37:04,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19383 states and 55623 transitions. [2022-03-01 15:37:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:04,435 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:04,435 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] [2022-03-01 15:37:04,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-01 15:37:04,435 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:04,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1709429170, now seen corresponding path program 15 times [2022-03-01 15:37:04,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:04,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128977059] [2022-03-01 15:37:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:04,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:04,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128977059] [2022-03-01 15:37:04,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128977059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:04,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:04,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:37:04,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874809726] [2022-03-01 15:37:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:04,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:37:04,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:37:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:37:04,778 INFO L87 Difference]: Start difference. First operand 19383 states and 55623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:05,464 INFO L93 Difference]: Finished difference Result 28536 states and 82240 transitions. [2022-03-01 15:37:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:37:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:05,516 INFO L225 Difference]: With dead ends: 28536 [2022-03-01 15:37:05,517 INFO L226 Difference]: Without dead ends: 28536 [2022-03-01 15:37:05,517 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 [2022-03-01 15:37:05,517 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1419 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:05,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 2864 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28536 states. [2022-03-01 15:37:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28536 to 19359. [2022-03-01 15:37:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19359 states, 19358 states have (on average 2.8687364397148465) internal successors, (55533), 19358 states have internal predecessors, (55533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 55533 transitions. [2022-03-01 15:37:05,845 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 55533 transitions. Word has length 177 [2022-03-01 15:37:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:05,845 INFO L470 AbstractCegarLoop]: Abstraction has 19359 states and 55533 transitions. [2022-03-01 15:37:05,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 55533 transitions. [2022-03-01 15:37:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:05,870 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:05,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:05,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-01 15:37:05,871 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 895297868, now seen corresponding path program 21 times [2022-03-01 15:37:05,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:05,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262206063] [2022-03-01 15:37:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:05,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:06,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:06,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262206063] [2022-03-01 15:37:06,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262206063] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:06,221 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:06,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:06,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426479256] [2022-03-01 15:37:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:06,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:06,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:06,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:06,222 INFO L87 Difference]: Start difference. First operand 19359 states and 55533 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:06,853 INFO L93 Difference]: Finished difference Result 28640 states and 82468 transitions. [2022-03-01 15:37:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:37:06,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:06,907 INFO L225 Difference]: With dead ends: 28640 [2022-03-01 15:37:06,908 INFO L226 Difference]: Without dead ends: 28640 [2022-03-01 15:37:06,908 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 [2022-03-01 15:37:06,908 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 890 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:06,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2909 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28640 states. [2022-03-01 15:37:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28640 to 19359. [2022-03-01 15:37:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19359 states, 19358 states have (on average 2.8683231738815995) internal successors, (55525), 19358 states have internal predecessors, (55525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 55525 transitions. [2022-03-01 15:37:07,332 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 55525 transitions. Word has length 177 [2022-03-01 15:37:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:07,333 INFO L470 AbstractCegarLoop]: Abstraction has 19359 states and 55525 transitions. [2022-03-01 15:37:07,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 55525 transitions. [2022-03-01 15:37:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:07,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:07,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:07,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-01 15:37:07,358 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash -631615694, now seen corresponding path program 20 times [2022-03-01 15:37:07,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:07,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004527316] [2022-03-01 15:37:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:07,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:07,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004527316] [2022-03-01 15:37:07,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004527316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:07,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:07,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:37:07,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293538043] [2022-03-01 15:37:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:07,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:37:07,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:37:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:37:07,692 INFO L87 Difference]: Start difference. First operand 19359 states and 55525 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:08,321 INFO L93 Difference]: Finished difference Result 28428 states and 81862 transitions. [2022-03-01 15:37:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:37:08,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:08,377 INFO L225 Difference]: With dead ends: 28428 [2022-03-01 15:37:08,377 INFO L226 Difference]: Without dead ends: 28428 [2022-03-01 15:37:08,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 15:37:08,378 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1024 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:08,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3142 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28428 states. [2022-03-01 15:37:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28428 to 19327. [2022-03-01 15:37:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19327 states, 19326 states have (on average 2.8666563179136912) internal successors, (55401), 19326 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19327 states to 19327 states and 55401 transitions. [2022-03-01 15:37:08,715 INFO L78 Accepts]: Start accepts. Automaton has 19327 states and 55401 transitions. Word has length 177 [2022-03-01 15:37:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:08,715 INFO L470 AbstractCegarLoop]: Abstraction has 19327 states and 55401 transitions. [2022-03-01 15:37:08,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:08,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19327 states and 55401 transitions. [2022-03-01 15:37:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:08,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:08,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:08,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-01 15:37:08,741 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:08,742 INFO L85 PathProgramCache]: Analyzing trace with hash -430066804, now seen corresponding path program 29 times [2022-03-01 15:37:08,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:08,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480156942] [2022-03-01 15:37:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:08,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:09,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:09,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480156942] [2022-03-01 15:37:09,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480156942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:09,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:09,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:09,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988855394] [2022-03-01 15:37:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:09,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:09,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:09,105 INFO L87 Difference]: Start difference. First operand 19327 states and 55401 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:09,857 INFO L93 Difference]: Finished difference Result 28272 states and 81418 transitions. [2022-03-01 15:37:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:37:09,858 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:09,909 INFO L225 Difference]: With dead ends: 28272 [2022-03-01 15:37:09,909 INFO L226 Difference]: Without dead ends: 28272 [2022-03-01 15:37:09,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:37:09,910 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 975 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:09,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 3436 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28272 states. [2022-03-01 15:37:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28272 to 19327. [2022-03-01 15:37:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19327 states, 19326 states have (on average 2.8666563179136912) internal successors, (55401), 19326 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19327 states to 19327 states and 55401 transitions. [2022-03-01 15:37:10,243 INFO L78 Accepts]: Start accepts. Automaton has 19327 states and 55401 transitions. Word has length 177 [2022-03-01 15:37:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:10,243 INFO L470 AbstractCegarLoop]: Abstraction has 19327 states and 55401 transitions. [2022-03-01 15:37:10,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19327 states and 55401 transitions. [2022-03-01 15:37:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:10,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:10,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:10,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-01 15:37:10,269 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 33507938, now seen corresponding path program 16 times [2022-03-01 15:37:10,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:10,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425402744] [2022-03-01 15:37:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:10,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:10,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425402744] [2022-03-01 15:37:10,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425402744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:10,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:10,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:37:10,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101861686] [2022-03-01 15:37:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:10,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:37:10,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:37:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:37:10,621 INFO L87 Difference]: Start difference. First operand 19327 states and 55401 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:11,312 INFO L93 Difference]: Finished difference Result 28408 states and 81808 transitions. [2022-03-01 15:37:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:37:11,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:11,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:11,364 INFO L225 Difference]: With dead ends: 28408 [2022-03-01 15:37:11,364 INFO L226 Difference]: Without dead ends: 28408 [2022-03-01 15:37:11,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:37:11,365 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1265 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:11,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 2901 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-03-01 15:37:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 19319. [2022-03-01 15:37:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19319 states, 19318 states have (on average 2.865876384718915) internal successors, (55363), 19318 states have internal predecessors, (55363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19319 states to 19319 states and 55363 transitions. [2022-03-01 15:37:11,685 INFO L78 Accepts]: Start accepts. Automaton has 19319 states and 55363 transitions. Word has length 177 [2022-03-01 15:37:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:11,685 INFO L470 AbstractCegarLoop]: Abstraction has 19319 states and 55363 transitions. [2022-03-01 15:37:11,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 19319 states and 55363 transitions. [2022-03-01 15:37:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:11,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:11,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-01 15:37:11,713 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2064745658, now seen corresponding path program 30 times [2022-03-01 15:37:11,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:11,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040020862] [2022-03-01 15:37:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:11,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:12,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:12,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040020862] [2022-03-01 15:37:12,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040020862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:12,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:12,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:12,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674372349] [2022-03-01 15:37:12,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:12,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:12,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:12,091 INFO L87 Difference]: Start difference. First operand 19319 states and 55363 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:12,816 INFO L93 Difference]: Finished difference Result 27856 states and 80114 transitions. [2022-03-01 15:37:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:37:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:12,867 INFO L225 Difference]: With dead ends: 27856 [2022-03-01 15:37:12,867 INFO L226 Difference]: Without dead ends: 27856 [2022-03-01 15:37:12,868 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 [2022-03-01 15:37:12,868 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1051 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:12,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3101 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-01 15:37:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 19199. [2022-03-01 15:37:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19199 states, 19198 states have (on average 2.8648296697572664) internal successors, (54999), 19198 states have internal predecessors, (54999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19199 states to 19199 states and 54999 transitions. [2022-03-01 15:37:13,193 INFO L78 Accepts]: Start accepts. Automaton has 19199 states and 54999 transitions. Word has length 177 [2022-03-01 15:37:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:13,193 INFO L470 AbstractCegarLoop]: Abstraction has 19199 states and 54999 transitions. [2022-03-01 15:37:13,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 19199 states and 54999 transitions. [2022-03-01 15:37:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:13,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:13,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:13,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-01 15:37:13,218 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1769863266, now seen corresponding path program 17 times [2022-03-01 15:37:13,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:13,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662738675] [2022-03-01 15:37:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:13,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:13,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662738675] [2022-03-01 15:37:13,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662738675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:13,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:13,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:37:13,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935961062] [2022-03-01 15:37:13,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:13,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:37:13,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:37:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:37:13,615 INFO L87 Difference]: Start difference. First operand 19199 states and 54999 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:14,309 INFO L93 Difference]: Finished difference Result 27928 states and 80304 transitions. [2022-03-01 15:37:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:37:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:14,361 INFO L225 Difference]: With dead ends: 27928 [2022-03-01 15:37:14,361 INFO L226 Difference]: Without dead ends: 27928 [2022-03-01 15:37:14,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:37:14,361 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1137 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:14,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2777 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:37:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2022-03-01 15:37:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 19215. [2022-03-01 15:37:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19215 states, 19214 states have (on average 2.8647340480899346) internal successors, (55043), 19214 states have internal predecessors, (55043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19215 states to 19215 states and 55043 transitions. [2022-03-01 15:37:14,678 INFO L78 Accepts]: Start accepts. Automaton has 19215 states and 55043 transitions. Word has length 177 [2022-03-01 15:37:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:14,679 INFO L470 AbstractCegarLoop]: Abstraction has 19215 states and 55043 transitions. [2022-03-01 15:37:14,679 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) [2022-03-01 15:37:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19215 states and 55043 transitions. [2022-03-01 15:37:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:14,704 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:14,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-01 15:37:14,704 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 430740608, now seen corresponding path program 18 times [2022-03-01 15:37:14,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:14,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174832079] [2022-03-01 15:37:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:14,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:15,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:15,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174832079] [2022-03-01 15:37:15,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174832079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:15,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:15,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:37:15,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471185550] [2022-03-01 15:37:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:15,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:37:15,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:37:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:37:15,034 INFO L87 Difference]: Start difference. First operand 19215 states and 55043 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:15,837 INFO L93 Difference]: Finished difference Result 27928 states and 80096 transitions. [2022-03-01 15:37:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:37:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:15,888 INFO L225 Difference]: With dead ends: 27928 [2022-03-01 15:37:15,888 INFO L226 Difference]: Without dead ends: 27928 [2022-03-01 15:37:15,888 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 [2022-03-01 15:37:15,888 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 806 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:15,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3935 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2022-03-01 15:37:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 19163. [2022-03-01 15:37:16,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19163 states, 19162 states have (on average 2.8647844692620814) internal successors, (54895), 19162 states have internal predecessors, (54895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19163 states to 19163 states and 54895 transitions. [2022-03-01 15:37:16,208 INFO L78 Accepts]: Start accepts. Automaton has 19163 states and 54895 transitions. Word has length 177 [2022-03-01 15:37:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:16,208 INFO L470 AbstractCegarLoop]: Abstraction has 19163 states and 54895 transitions. [2022-03-01 15:37:16,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 19163 states and 54895 transitions. [2022-03-01 15:37:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:16,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:16,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:16,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-01 15:37:16,235 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -267298982, now seen corresponding path program 21 times [2022-03-01 15:37:16,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:16,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950448595] [2022-03-01 15:37:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:16,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:16,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950448595] [2022-03-01 15:37:16,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950448595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:37:16,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019967788] [2022-03-01 15:37:16,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:37:16,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:16,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:37:16,568 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:37:16,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 15:37:16,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:37:16,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:37:16,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-01 15:37:16,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:37:17,132 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:37:17,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:37:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:37:17,372 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-01 15:37:17,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-01 15:37:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:17,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019967788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:37:17,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:37:17,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-01 15:37:17,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233551241] [2022-03-01 15:37:17,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:37:17,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:37:17,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:37:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:37:17,504 INFO L87 Difference]: Start difference. First operand 19163 states and 54895 transitions. Second operand has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:19,308 INFO L93 Difference]: Finished difference Result 30218 states and 86676 transitions. [2022-03-01 15:37:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 15:37:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:19,367 INFO L225 Difference]: With dead ends: 30218 [2022-03-01 15:37:19,367 INFO L226 Difference]: Without dead ends: 30218 [2022-03-01 15:37:19,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1191, Invalid=4661, Unknown=0, NotChecked=0, Total=5852 [2022-03-01 15:37:19,368 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 1485 mSDsluCounter, 6043 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 6384 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:19,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 6384 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1644 Invalid, 0 Unknown, 389 Unchecked, 0.6s Time] [2022-03-01 15:37:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30218 states. [2022-03-01 15:37:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30218 to 18725. [2022-03-01 15:37:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18725 states, 18724 states have (on average 2.8766823328348643) internal successors, (53863), 18724 states have internal predecessors, (53863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18725 states to 18725 states and 53863 transitions. [2022-03-01 15:37:19,721 INFO L78 Accepts]: Start accepts. Automaton has 18725 states and 53863 transitions. Word has length 177 [2022-03-01 15:37:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:19,721 INFO L470 AbstractCegarLoop]: Abstraction has 18725 states and 53863 transitions. [2022-03-01 15:37:19,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 18725 states and 53863 transitions. [2022-03-01 15:37:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:19,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:19,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:19,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 15:37:19,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:19,946 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:19,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:19,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1786844712, now seen corresponding path program 22 times [2022-03-01 15:37:19,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:19,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328413168] [2022-03-01 15:37:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:19,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:20,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:20,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328413168] [2022-03-01 15:37:20,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328413168] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:37:20,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161973015] [2022-03-01 15:37:20,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:37:20,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:37:20,282 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:37:20,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 15:37:20,430 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:37:20,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:37:20,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-01 15:37:20,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:37:20,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:37:21,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:21,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:21,416 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:37:21,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:37:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:37:21,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:37:21,724 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_2314 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2314))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-01 15:37:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-01 15:37:21,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161973015] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:37:21,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:37:21,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-03-01 15:37:21,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464641111] [2022-03-01 15:37:21,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:37:21,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 15:37:21,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 15:37:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1700, Unknown=1, NotChecked=84, Total=1980 [2022-03-01 15:37:21,834 INFO L87 Difference]: Start difference. First operand 18725 states and 53863 transitions. Second operand has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:24,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:24,304 INFO L93 Difference]: Finished difference Result 28587 states and 81814 transitions. [2022-03-01 15:37:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 15:37:24,304 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:24,360 INFO L225 Difference]: With dead ends: 28587 [2022-03-01 15:37:24,360 INFO L226 Difference]: Without dead ends: 28587 [2022-03-01 15:37:24,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1281, Invalid=5202, Unknown=1, NotChecked=158, Total=6642 [2022-03-01 15:37:24,360 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1987 mSDsluCounter, 6937 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 7240 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1189 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:24,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1987 Valid, 7240 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2378 Invalid, 0 Unknown, 1189 Unchecked, 0.9s Time] [2022-03-01 15:37:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28587 states. [2022-03-01 15:37:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28587 to 17305. [2022-03-01 15:37:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-01 15:37:24,684 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-01 15:37:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:24,684 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-01 15:37:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-01 15:37:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:24,707 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:24,707 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] [2022-03-01 15:37:24,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-01 15:37:24,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-01 15:37:24,908 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash 106754244, now seen corresponding path program 22 times [2022-03-01 15:37:24,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:24,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105153822] [2022-03-01 15:37:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:24,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:25,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:25,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105153822] [2022-03-01 15:37:25,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105153822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:25,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:25,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:25,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585837032] [2022-03-01 15:37:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:25,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:25,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:25,347 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:26,424 INFO L93 Difference]: Finished difference Result 33032 states and 94773 transitions. [2022-03-01 15:37:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:37:26,425 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:26,485 INFO L225 Difference]: With dead ends: 33032 [2022-03-01 15:37:26,485 INFO L226 Difference]: Without dead ends: 33032 [2022-03-01 15:37:26,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1621, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:37:26,486 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1529 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:26,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 3900 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:37:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33032 states. [2022-03-01 15:37:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33032 to 17305. [2022-03-01 15:37:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-01 15:37:26,819 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-01 15:37:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:26,819 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-01 15:37:26,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-01 15:37:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:26,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:26,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:26,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-01 15:37:26,842 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1999415984, now seen corresponding path program 23 times [2022-03-01 15:37:26,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:26,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261956434] [2022-03-01 15:37:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:27,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:27,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261956434] [2022-03-01 15:37:27,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261956434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:37:27,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681635203] [2022-03-01 15:37:27,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:37:27,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:27,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:37:27,222 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:37:27,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 15:37:27,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:37:27,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:37:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-01 15:37:27,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:37:27,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:27,479 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:37:27,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:37:27,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:37:28,040 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:37:28,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:37:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:28,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:37:28,278 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2364 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2364))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-01 15:37:28,321 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-01 15:37:28,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-01 15:37:28,335 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:28,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-01 15:37:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:29,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681635203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:37:29,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:37:29,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-03-01 15:37:29,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299766999] [2022-03-01 15:37:29,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:37:29,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-01 15:37:29,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:29,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-01 15:37:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-03-01 15:37:29,171 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:30,983 INFO L93 Difference]: Finished difference Result 37416 states and 107769 transitions. [2022-03-01 15:37:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:37:30,983 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:31,052 INFO L225 Difference]: With dead ends: 37416 [2022-03-01 15:37:31,053 INFO L226 Difference]: Without dead ends: 37416 [2022-03-01 15:37:31,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1150, Invalid=4859, Unknown=1, NotChecked=152, Total=6162 [2022-03-01 15:37:31,054 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 2532 mSDsluCounter, 6994 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 7303 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1001 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:31,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 7303 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1662 Invalid, 0 Unknown, 1001 Unchecked, 0.6s Time] [2022-03-01 15:37:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37416 states. [2022-03-01 15:37:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37416 to 17515. [2022-03-01 15:37:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17515 states, 17514 states have (on average 2.8666780861025467) internal successors, (50207), 17514 states have internal predecessors, (50207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17515 states to 17515 states and 50207 transitions. [2022-03-01 15:37:31,437 INFO L78 Accepts]: Start accepts. Automaton has 17515 states and 50207 transitions. Word has length 177 [2022-03-01 15:37:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:31,437 INFO L470 AbstractCegarLoop]: Abstraction has 17515 states and 50207 transitions. [2022-03-01 15:37:31,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 17515 states and 50207 transitions. [2022-03-01 15:37:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:31,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:31,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:31,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-01 15:37:31,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-03-01 15:37:31,662 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1635958392, now seen corresponding path program 24 times [2022-03-01 15:37:31,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:31,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031816496] [2022-03-01 15:37:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:32,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:32,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031816496] [2022-03-01 15:37:32,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031816496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:37:32,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722541830] [2022-03-01 15:37:32,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:37:32,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:32,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:37:32,069 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:37:32,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 15:37:32,231 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:37:32,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:37:32,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-01 15:37:32,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:37:32,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:32,325 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:37:32,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:37:32,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:37:32,870 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:37:32,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:37:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:32,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:37:33,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2398 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2398))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select .cse0 c_~get2~0.offset) (select (select .cse1 c_~get1~0.base) c_~get1~0.offset)))))) is different from false [2022-03-01 15:37:33,157 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-01 15:37:33,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-01 15:37:33,176 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:33,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-01 15:37:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:33,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722541830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:37:33,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:37:33,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-03-01 15:37:33,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096383819] [2022-03-01 15:37:33,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:37:33,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-01 15:37:33,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-01 15:37:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-03-01 15:37:33,856 INFO L87 Difference]: Start difference. First operand 17515 states and 50207 transitions. Second operand has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:35,651 INFO L93 Difference]: Finished difference Result 33229 states and 95744 transitions. [2022-03-01 15:37:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:37:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:35,715 INFO L225 Difference]: With dead ends: 33229 [2022-03-01 15:37:35,715 INFO L226 Difference]: Without dead ends: 33229 [2022-03-01 15:37:35,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1165, Invalid=4844, Unknown=1, NotChecked=152, Total=6162 [2022-03-01 15:37:35,716 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 2698 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 6816 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 595 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:35,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2698 Valid, 6816 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1771 Invalid, 0 Unknown, 595 Unchecked, 0.7s Time] [2022-03-01 15:37:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33229 states. [2022-03-01 15:37:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33229 to 14419. [2022-03-01 15:37:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 14418 states have (on average 2.8601054237758357) internal successors, (41237), 14418 states have internal predecessors, (41237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 41237 transitions. [2022-03-01 15:37:36,035 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 41237 transitions. Word has length 177 [2022-03-01 15:37:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:36,035 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 41237 transitions. [2022-03-01 15:37:36,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 41237 transitions. [2022-03-01 15:37:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:36,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:36,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:36,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 15:37:36,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-01 15:37:36,255 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash -480864666, now seen corresponding path program 23 times [2022-03-01 15:37:36,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:36,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826664894] [2022-03-01 15:37:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:36,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:36,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:36,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826664894] [2022-03-01 15:37:36,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826664894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:36,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:36,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:37:36,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19243031] [2022-03-01 15:37:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:36,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:37:36,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:37:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:37:36,751 INFO L87 Difference]: Start difference. First operand 14419 states and 41237 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:37,775 INFO L93 Difference]: Finished difference Result 27765 states and 79817 transitions. [2022-03-01 15:37:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 15:37:37,775 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:37,826 INFO L225 Difference]: With dead ends: 27765 [2022-03-01 15:37:37,826 INFO L226 Difference]: Without dead ends: 27765 [2022-03-01 15:37:37,826 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 [2022-03-01 15:37:37,826 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1599 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:37,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 3584 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27765 states. [2022-03-01 15:37:38,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27765 to 14419. [2022-03-01 15:37:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 14418 states have (on average 2.8601054237758357) internal successors, (41237), 14418 states have internal predecessors, (41237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 41237 transitions. [2022-03-01 15:37:38,107 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 41237 transitions. Word has length 177 [2022-03-01 15:37:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:38,107 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 41237 transitions. [2022-03-01 15:37:38,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 41237 transitions. [2022-03-01 15:37:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:38,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:38,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:38,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-01 15:37:38,127 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -643153592, now seen corresponding path program 24 times [2022-03-01 15:37:38,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:38,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334797075] [2022-03-01 15:37:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:38,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:38,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:38,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334797075] [2022-03-01 15:37:38,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334797075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:38,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:38,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:37:38,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339978071] [2022-03-01 15:37:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:38,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:37:38,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:37:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:37:38,565 INFO L87 Difference]: Start difference. First operand 14419 states and 41237 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:39,508 INFO L93 Difference]: Finished difference Result 24104 states and 69548 transitions. [2022-03-01 15:37:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:37:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:39,551 INFO L225 Difference]: With dead ends: 24104 [2022-03-01 15:37:39,551 INFO L226 Difference]: Without dead ends: 24104 [2022-03-01 15:37:39,552 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 [2022-03-01 15:37:39,552 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1317 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:39,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 3532 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24104 states. [2022-03-01 15:37:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24104 to 14427. [2022-03-01 15:37:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14427 states, 14426 states have (on average 2.86059891861916) internal successors, (41267), 14426 states have internal predecessors, (41267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14427 states to 14427 states and 41267 transitions. [2022-03-01 15:37:39,817 INFO L78 Accepts]: Start accepts. Automaton has 14427 states and 41267 transitions. Word has length 177 [2022-03-01 15:37:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:39,817 INFO L470 AbstractCegarLoop]: Abstraction has 14427 states and 41267 transitions. [2022-03-01 15:37:39,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14427 states and 41267 transitions. [2022-03-01 15:37:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:39,836 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:39,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:39,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-01 15:37:39,837 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:39,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash 184108908, now seen corresponding path program 31 times [2022-03-01 15:37:39,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:39,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440997035] [2022-03-01 15:37:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:40,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:40,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440997035] [2022-03-01 15:37:40,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440997035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:40,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:40,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:40,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731670432] [2022-03-01 15:37:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:40,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:40,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:40,307 INFO L87 Difference]: Start difference. First operand 14427 states and 41267 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:41,155 INFO L93 Difference]: Finished difference Result 23636 states and 68154 transitions. [2022-03-01 15:37:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:37:41,155 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:41,196 INFO L225 Difference]: With dead ends: 23636 [2022-03-01 15:37:41,196 INFO L226 Difference]: Without dead ends: 23636 [2022-03-01 15:37:41,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=1689, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:37:41,197 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1168 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:41,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 3198 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23636 states. [2022-03-01 15:37:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23636 to 14459. [2022-03-01 15:37:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14459 states, 14458 states have (on average 2.860354129201826) internal successors, (41355), 14458 states have internal predecessors, (41355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14459 states to 14459 states and 41355 transitions. [2022-03-01 15:37:41,460 INFO L78 Accepts]: Start accepts. Automaton has 14459 states and 41355 transitions. Word has length 177 [2022-03-01 15:37:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:41,461 INFO L470 AbstractCegarLoop]: Abstraction has 14459 states and 41355 transitions. [2022-03-01 15:37:41,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 14459 states and 41355 transitions. [2022-03-01 15:37:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:41,480 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:41,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:41,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-01 15:37:41,480 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1712752536, now seen corresponding path program 32 times [2022-03-01 15:37:41,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:41,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128639120] [2022-03-01 15:37:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:42,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:42,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128639120] [2022-03-01 15:37:42,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128639120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:37:42,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090293343] [2022-03-01 15:37:42,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:37:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:42,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:37:42,029 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:37:42,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 15:37:42,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:37:42,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:37:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-01 15:37:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:37:42,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:42,338 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:37:42,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:37:42,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:37:42,994 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:42,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-01 15:37:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:43,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:37:43,318 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2480 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2480))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (<= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (< (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|))))) is different from false [2022-03-01 15:37:43,362 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-01 15:37:43,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-01 15:37:43,382 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:43,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-01 15:37:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:44,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090293343] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:37:44,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:37:44,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-01 15:37:44,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370506718] [2022-03-01 15:37:44,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:37:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 15:37:44,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 15:37:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1469, Unknown=1, NotChecked=78, Total=1722 [2022-03-01 15:37:44,068 INFO L87 Difference]: Start difference. First operand 14459 states and 41355 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:46,376 INFO L93 Difference]: Finished difference Result 39442 states and 113945 transitions. [2022-03-01 15:37:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:37:46,376 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:46,453 INFO L225 Difference]: With dead ends: 39442 [2022-03-01 15:37:46,453 INFO L226 Difference]: Without dead ends: 39442 [2022-03-01 15:37:46,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1505, Invalid=6330, Unknown=1, NotChecked=174, Total=8010 [2022-03-01 15:37:46,454 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2213 mSDsluCounter, 8184 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 8561 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 890 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:46,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2213 Valid, 8561 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2078 Invalid, 0 Unknown, 890 Unchecked, 0.8s Time] [2022-03-01 15:37:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39442 states. [2022-03-01 15:37:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39442 to 15871. [2022-03-01 15:37:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15871 states, 15870 states have (on average 2.877441713925646) internal successors, (45665), 15870 states have internal predecessors, (45665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15871 states to 15871 states and 45665 transitions. [2022-03-01 15:37:46,851 INFO L78 Accepts]: Start accepts. Automaton has 15871 states and 45665 transitions. Word has length 177 [2022-03-01 15:37:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:46,851 INFO L470 AbstractCegarLoop]: Abstraction has 15871 states and 45665 transitions. [2022-03-01 15:37:46,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15871 states and 45665 transitions. [2022-03-01 15:37:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:46,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:46,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:46,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-01 15:37:47,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:47,074 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1955471522, now seen corresponding path program 25 times [2022-03-01 15:37:47,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:47,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261863755] [2022-03-01 15:37:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:47,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:47,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261863755] [2022-03-01 15:37:47,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261863755] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:47,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:47,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:37:47,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003458683] [2022-03-01 15:37:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:47,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:37:47,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:37:47,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:37:47,576 INFO L87 Difference]: Start difference. First operand 15871 states and 45665 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:48,394 INFO L93 Difference]: Finished difference Result 25244 states and 72978 transitions. [2022-03-01 15:37:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:37:48,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:48,440 INFO L225 Difference]: With dead ends: 25244 [2022-03-01 15:37:48,441 INFO L226 Difference]: Without dead ends: 25244 [2022-03-01 15:37:48,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 15:37:48,441 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1145 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:48,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 3393 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25244 states. [2022-03-01 15:37:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25244 to 15887. [2022-03-01 15:37:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15887 states, 15886 states have (on average 2.877816945738386) internal successors, (45717), 15886 states have internal predecessors, (45717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15887 states to 15887 states and 45717 transitions. [2022-03-01 15:37:48,719 INFO L78 Accepts]: Start accepts. Automaton has 15887 states and 45717 transitions. Word has length 177 [2022-03-01 15:37:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:48,719 INFO L470 AbstractCegarLoop]: Abstraction has 15887 states and 45717 transitions. [2022-03-01 15:37:48,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15887 states and 45717 transitions. [2022-03-01 15:37:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:48,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:48,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:48,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-01 15:37:48,740 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1767591432, now seen corresponding path program 25 times [2022-03-01 15:37:48,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:48,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445282296] [2022-03-01 15:37:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:49,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:49,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445282296] [2022-03-01 15:37:49,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445282296] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:49,177 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:49,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:49,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063003150] [2022-03-01 15:37:49,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:49,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:49,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:49,178 INFO L87 Difference]: Start difference. First operand 15887 states and 45717 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:50,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:50,019 INFO L93 Difference]: Finished difference Result 24684 states and 71162 transitions. [2022-03-01 15:37:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:37:50,020 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:50,064 INFO L225 Difference]: With dead ends: 24684 [2022-03-01 15:37:50,064 INFO L226 Difference]: Without dead ends: 24684 [2022-03-01 15:37:50,064 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 [2022-03-01 15:37:50,064 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1112 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:50,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 3627 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24684 states. [2022-03-01 15:37:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24684 to 15451. [2022-03-01 15:37:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15451 states, 15450 states have (on average 2.8645307443365695) internal successors, (44257), 15450 states have internal predecessors, (44257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15451 states to 15451 states and 44257 transitions. [2022-03-01 15:37:50,331 INFO L78 Accepts]: Start accepts. Automaton has 15451 states and 44257 transitions. Word has length 177 [2022-03-01 15:37:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:50,331 INFO L470 AbstractCegarLoop]: Abstraction has 15451 states and 44257 transitions. [2022-03-01 15:37:50,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 15451 states and 44257 transitions. [2022-03-01 15:37:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:50,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:50,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:50,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-01 15:37:50,351 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:50,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1131634966, now seen corresponding path program 33 times [2022-03-01 15:37:50,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:50,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012447745] [2022-03-01 15:37:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:50,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:50,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012447745] [2022-03-01 15:37:50,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012447745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:50,789 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:50,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:37:50,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165224978] [2022-03-01 15:37:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:50,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:37:50,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:37:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:37:50,790 INFO L87 Difference]: Start difference. First operand 15451 states and 44257 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:51,697 INFO L93 Difference]: Finished difference Result 22732 states and 65502 transitions. [2022-03-01 15:37:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:37:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:51,737 INFO L225 Difference]: With dead ends: 22732 [2022-03-01 15:37:51,737 INFO L226 Difference]: Without dead ends: 22732 [2022-03-01 15:37:51,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=497, Invalid=1759, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:37:51,737 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1555 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:51,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 2982 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2022-03-01 15:37:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 14523. [2022-03-01 15:37:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14523 states, 14522 states have (on average 2.8642748932653905) internal successors, (41595), 14522 states have internal predecessors, (41595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14523 states to 14523 states and 41595 transitions. [2022-03-01 15:37:51,992 INFO L78 Accepts]: Start accepts. Automaton has 14523 states and 41595 transitions. Word has length 177 [2022-03-01 15:37:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:51,992 INFO L470 AbstractCegarLoop]: Abstraction has 14523 states and 41595 transitions. [2022-03-01 15:37:51,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 14523 states and 41595 transitions. [2022-03-01 15:37:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:52,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:52,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:52,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-01 15:37:52,013 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -668060224, now seen corresponding path program 19 times [2022-03-01 15:37:52,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:52,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710993534] [2022-03-01 15:37:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:52,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:52,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:52,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710993534] [2022-03-01 15:37:52,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710993534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:37:52,486 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:37:52,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:37:52,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040224549] [2022-03-01 15:37:52,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:37:52,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:37:52,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:37:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:37:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:37:52,487 INFO L87 Difference]: Start difference. First operand 14523 states and 41595 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:37:53,339 INFO L93 Difference]: Finished difference Result 22972 states and 66162 transitions. [2022-03-01 15:37:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:37:53,340 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:37:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:37:53,378 INFO L225 Difference]: With dead ends: 22972 [2022-03-01 15:37:53,378 INFO L226 Difference]: Without dead ends: 22972 [2022-03-01 15:37:53,379 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 [2022-03-01 15:37:53,379 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1325 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:37:53,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 3222 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:37:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22972 states. [2022-03-01 15:37:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22972 to 14457. [2022-03-01 15:37:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14456 states have (on average 2.860334809075816) internal successors, (41349), 14456 states have internal predecessors, (41349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 41349 transitions. [2022-03-01 15:37:53,617 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 41349 transitions. Word has length 177 [2022-03-01 15:37:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:37:53,617 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 41349 transitions. [2022-03-01 15:37:53,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:37:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 41349 transitions. [2022-03-01 15:37:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:37:53,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:37:53,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:37:53,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-01 15:37:53,636 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:37:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:37:53,636 INFO L85 PathProgramCache]: Analyzing trace with hash -345015716, now seen corresponding path program 34 times [2022-03-01 15:37:53,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:37:53,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962763995] [2022-03-01 15:37:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:37:53,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:37:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:37:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:37:54,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:37:54,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962763995] [2022-03-01 15:37:54,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962763995] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:37:54,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514122927] [2022-03-01 15:37:54,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:37:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:37:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:37:54,080 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:37:54,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 15:37:54,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:37:54,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:37:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 15:37:54,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:37:54,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:54,453 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:37:54,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:37:54,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:37:55,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:37:55,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:37:55,689 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:37:55,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:37:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:37:55,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:37:56,705 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:56,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2022-03-01 15:37:56,711 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-01 15:37:56,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 851 treesize of output 739 [2022-03-01 15:37:56,724 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:56,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 739 treesize of output 667 [2022-03-01 15:37:56,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:37:56,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 659 treesize of output 611 [2022-03-01 15:38:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:38:01,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514122927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:38:01,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:38:01,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 24] total 69 [2022-03-01 15:38:01,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449497388] [2022-03-01 15:38:01,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:38:01,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-01 15:38:01,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-01 15:38:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=4136, Unknown=123, NotChecked=0, Total=4692 [2022-03-01 15:38:01,099 INFO L87 Difference]: Start difference. First operand 14457 states and 41349 transitions. Second operand has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:19,441 INFO L93 Difference]: Finished difference Result 80843 states and 231171 transitions. [2022-03-01 15:38:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-01 15:38:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:19,608 INFO L225 Difference]: With dead ends: 80843 [2022-03-01 15:38:19,608 INFO L226 Difference]: Without dead ends: 80843 [2022-03-01 15:38:19,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 311 SyntacticMatches, 24 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 12816 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=8117, Invalid=30372, Unknown=123, NotChecked=0, Total=38612 [2022-03-01 15:38:19,610 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 5481 mSDsluCounter, 20147 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 20290 SdHoareTripleChecker+Invalid, 8541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3857 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:19,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 20290 Invalid, 8541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4629 Invalid, 0 Unknown, 3857 Unchecked, 2.0s Time] [2022-03-01 15:38:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80843 states. [2022-03-01 15:38:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80843 to 18715. [2022-03-01 15:38:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18715 states, 18714 states have (on average 2.889868547611414) internal successors, (54081), 18714 states have internal predecessors, (54081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18715 states to 18715 states and 54081 transitions. [2022-03-01 15:38:20,405 INFO L78 Accepts]: Start accepts. Automaton has 18715 states and 54081 transitions. Word has length 177 [2022-03-01 15:38:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:20,405 INFO L470 AbstractCegarLoop]: Abstraction has 18715 states and 54081 transitions. [2022-03-01 15:38:20,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 18715 states and 54081 transitions. [2022-03-01 15:38:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:20,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:20,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:20,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-01 15:38:20,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-01 15:38:20,631 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1276711498, now seen corresponding path program 26 times [2022-03-01 15:38:20,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:20,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671527790] [2022-03-01 15:38:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:21,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:21,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671527790] [2022-03-01 15:38:21,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671527790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:21,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:21,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:38:21,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271702380] [2022-03-01 15:38:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:21,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:38:21,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:38:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:38:21,162 INFO L87 Difference]: Start difference. First operand 18715 states and 54081 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:22,346 INFO L93 Difference]: Finished difference Result 32931 states and 94897 transitions. [2022-03-01 15:38:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 15:38:22,346 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:22,408 INFO L225 Difference]: With dead ends: 32931 [2022-03-01 15:38:22,408 INFO L226 Difference]: Without dead ends: 32931 [2022-03-01 15:38:22,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 15:38:22,409 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1430 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:22,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 4007 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:38:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32931 states. [2022-03-01 15:38:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32931 to 18715. [2022-03-01 15:38:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18715 states, 18714 states have (on average 2.889868547611414) internal successors, (54081), 18714 states have internal predecessors, (54081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18715 states to 18715 states and 54081 transitions. [2022-03-01 15:38:22,760 INFO L78 Accepts]: Start accepts. Automaton has 18715 states and 54081 transitions. Word has length 177 [2022-03-01 15:38:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:22,760 INFO L470 AbstractCegarLoop]: Abstraction has 18715 states and 54081 transitions. [2022-03-01 15:38:22,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 18715 states and 54081 transitions. [2022-03-01 15:38:22,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:22,785 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:22,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:22,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-01 15:38:22,785 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1439000424, now seen corresponding path program 27 times [2022-03-01 15:38:22,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:22,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233118309] [2022-03-01 15:38:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:22,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:23,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:23,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233118309] [2022-03-01 15:38:23,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233118309] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:23,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:23,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:38:23,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888177059] [2022-03-01 15:38:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:23,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:38:23,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:38:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:38:23,216 INFO L87 Difference]: Start difference. First operand 18715 states and 54081 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:24,213 INFO L93 Difference]: Finished difference Result 29598 states and 85618 transitions. [2022-03-01 15:38:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 15:38:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:24,268 INFO L225 Difference]: With dead ends: 29598 [2022-03-01 15:38:24,268 INFO L226 Difference]: Without dead ends: 29598 [2022-03-01 15:38:24,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 15:38:24,269 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1279 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:24,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3453 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29598 states. [2022-03-01 15:38:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29598 to 18723. [2022-03-01 15:38:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18723 states, 18722 states have (on average 2.89023608588826) internal successors, (54111), 18722 states have internal predecessors, (54111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18723 states to 18723 states and 54111 transitions. [2022-03-01 15:38:24,972 INFO L78 Accepts]: Start accepts. Automaton has 18723 states and 54111 transitions. Word has length 177 [2022-03-01 15:38:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:24,972 INFO L470 AbstractCegarLoop]: Abstraction has 18723 states and 54111 transitions. [2022-03-01 15:38:24,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 18723 states and 54111 transitions. [2022-03-01 15:38:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:24,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:24,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:24,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-01 15:38:24,997 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash -611737924, now seen corresponding path program 35 times [2022-03-01 15:38:24,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:24,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753070074] [2022-03-01 15:38:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:25,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:25,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753070074] [2022-03-01 15:38:25,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753070074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:25,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:25,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:38:25,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919912713] [2022-03-01 15:38:25,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:25,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:38:25,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:38:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:38:25,423 INFO L87 Difference]: Start difference. First operand 18723 states and 54111 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:26,343 INFO L93 Difference]: Finished difference Result 28664 states and 82908 transitions. [2022-03-01 15:38:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 15:38:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:26,395 INFO L225 Difference]: With dead ends: 28664 [2022-03-01 15:38:26,395 INFO L226 Difference]: Without dead ends: 28664 [2022-03-01 15:38:26,395 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 [2022-03-01 15:38:26,395 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1254 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:26,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2985 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28664 states. [2022-03-01 15:38:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28664 to 18755. [2022-03-01 15:38:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18755 states, 18754 states have (on average 2.889996800682521) internal successors, (54199), 18754 states have internal predecessors, (54199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 54199 transitions. [2022-03-01 15:38:26,717 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 54199 transitions. Word has length 177 [2022-03-01 15:38:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:26,718 INFO L470 AbstractCegarLoop]: Abstraction has 18755 states and 54199 transitions. [2022-03-01 15:38:26,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 54199 transitions. [2022-03-01 15:38:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:26,742 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:26,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:26,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-01 15:38:26,742 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 916905704, now seen corresponding path program 36 times [2022-03-01 15:38:26,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:26,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921336279] [2022-03-01 15:38:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:27,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:27,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921336279] [2022-03-01 15:38:27,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921336279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:38:27,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037567393] [2022-03-01 15:38:27,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:38:27,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:38:27,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:38:27,153 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:38:27,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 15:38:27,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:38:27,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:38:27,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-01 15:38:27,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:38:27,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:38:27,398 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:38:27,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:38:27,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:38:28,025 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:38:28,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-01 15:38:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:28,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:38:28,319 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2663 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2663))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (< (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|) (<= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-01 15:38:28,361 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-01 15:38:28,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-01 15:38:28,379 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:38:28,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-01 15:38:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:29,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037567393] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:38:29,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:38:29,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-01 15:38:29,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898290249] [2022-03-01 15:38:29,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:38:29,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 15:38:29,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 15:38:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1494, Unknown=1, NotChecked=78, Total=1722 [2022-03-01 15:38:29,285 INFO L87 Difference]: Start difference. First operand 18755 states and 54199 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:31,501 INFO L93 Difference]: Finished difference Result 31402 states and 90048 transitions. [2022-03-01 15:38:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 15:38:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:31,559 INFO L225 Difference]: With dead ends: 31402 [2022-03-01 15:38:31,560 INFO L226 Difference]: Without dead ends: 31402 [2022-03-01 15:38:31,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 346 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1299, Invalid=6014, Unknown=1, NotChecked=168, Total=7482 [2022-03-01 15:38:31,561 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 2136 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 882 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:31,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 6731 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1711 Invalid, 0 Unknown, 882 Unchecked, 0.6s Time] [2022-03-01 15:38:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31402 states. [2022-03-01 15:38:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31402 to 19627. [2022-03-01 15:38:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19627 states, 19626 states have (on average 2.8935595638438807) internal successors, (56789), 19626 states have internal predecessors, (56789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19627 states to 19627 states and 56789 transitions. [2022-03-01 15:38:32,249 INFO L78 Accepts]: Start accepts. Automaton has 19627 states and 56789 transitions. Word has length 177 [2022-03-01 15:38:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:32,249 INFO L470 AbstractCegarLoop]: Abstraction has 19627 states and 56789 transitions. [2022-03-01 15:38:32,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 19627 states and 56789 transitions. [2022-03-01 15:38:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:32,275 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:32,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:32,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-01 15:38:32,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-01 15:38:32,476 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:32,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1159624690, now seen corresponding path program 28 times [2022-03-01 15:38:32,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:32,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604566947] [2022-03-01 15:38:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:32,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:32,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:32,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604566947] [2022-03-01 15:38:32,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604566947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:32,986 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:32,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:38:32,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285274717] [2022-03-01 15:38:32,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:32,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:38:32,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:38:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:38:32,987 INFO L87 Difference]: Start difference. First operand 19627 states and 56789 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:33,920 INFO L93 Difference]: Finished difference Result 29886 states and 86430 transitions. [2022-03-01 15:38:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:38:33,920 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:33,974 INFO L225 Difference]: With dead ends: 29886 [2022-03-01 15:38:33,974 INFO L226 Difference]: Without dead ends: 29886 [2022-03-01 15:38:33,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:38:33,975 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1139 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:33,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 3369 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29886 states. [2022-03-01 15:38:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29886 to 19643. [2022-03-01 15:38:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19643 states, 19642 states have (on average 2.8942572039507177) internal successors, (56849), 19642 states have internal predecessors, (56849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19643 states to 19643 states and 56849 transitions. [2022-03-01 15:38:34,314 INFO L78 Accepts]: Start accepts. Automaton has 19643 states and 56849 transitions. Word has length 177 [2022-03-01 15:38:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:34,315 INFO L470 AbstractCegarLoop]: Abstraction has 19643 states and 56849 transitions. [2022-03-01 15:38:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 19643 states and 56849 transitions. [2022-03-01 15:38:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:34,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:34,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:34,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-01 15:38:34,341 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:34,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1445824888, now seen corresponding path program 37 times [2022-03-01 15:38:34,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:34,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357295857] [2022-03-01 15:38:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:34,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:34,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357295857] [2022-03-01 15:38:34,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357295857] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:34,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:34,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:38:34,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403869501] [2022-03-01 15:38:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:34,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:38:34,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:38:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:38:34,767 INFO L87 Difference]: Start difference. First operand 19643 states and 56849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:35,620 INFO L93 Difference]: Finished difference Result 29396 states and 85042 transitions. [2022-03-01 15:38:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:38:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:35,674 INFO L225 Difference]: With dead ends: 29396 [2022-03-01 15:38:35,674 INFO L226 Difference]: Without dead ends: 29396 [2022-03-01 15:38:35,674 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 [2022-03-01 15:38:35,675 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1140 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:35,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2949 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29396 states. [2022-03-01 15:38:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29396 to 19651. [2022-03-01 15:38:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19651 states, 19650 states have (on average 2.894198473282443) internal successors, (56871), 19650 states have internal predecessors, (56871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19651 states to 19651 states and 56871 transitions. [2022-03-01 15:38:36,094 INFO L78 Accepts]: Start accepts. Automaton has 19651 states and 56871 transitions. Word has length 177 [2022-03-01 15:38:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:36,095 INFO L470 AbstractCegarLoop]: Abstraction has 19651 states and 56871 transitions. [2022-03-01 15:38:36,095 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) [2022-03-01 15:38:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 19651 states and 56871 transitions. [2022-03-01 15:38:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:36,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:36,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:36,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-01 15:38:36,121 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1927481798, now seen corresponding path program 38 times [2022-03-01 15:38:36,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:36,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912690884] [2022-03-01 15:38:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:36,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:36,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:36,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912690884] [2022-03-01 15:38:36,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912690884] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:36,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:36,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:38:36,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74689468] [2022-03-01 15:38:36,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:36,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:38:36,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:38:36,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:38:36,550 INFO L87 Difference]: Start difference. First operand 19651 states and 56871 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:37,461 INFO L93 Difference]: Finished difference Result 28870 states and 83552 transitions. [2022-03-01 15:38:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:38:37,462 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:37,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:37,514 INFO L225 Difference]: With dead ends: 28870 [2022-03-01 15:38:37,514 INFO L226 Difference]: Without dead ends: 28870 [2022-03-01 15:38:37,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:38:37,515 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1360 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:37,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1360 Valid, 2943 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28870 states. [2022-03-01 15:38:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28870 to 19643. [2022-03-01 15:38:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19643 states, 19642 states have (on average 2.8942572039507177) internal successors, (56849), 19642 states have internal predecessors, (56849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19643 states to 19643 states and 56849 transitions. [2022-03-01 15:38:37,843 INFO L78 Accepts]: Start accepts. Automaton has 19643 states and 56849 transitions. Word has length 177 [2022-03-01 15:38:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:37,843 INFO L470 AbstractCegarLoop]: Abstraction has 19643 states and 56849 transitions. [2022-03-01 15:38:37,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19643 states and 56849 transitions. [2022-03-01 15:38:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:37,868 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:37,868 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] [2022-03-01 15:38:37,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-01 15:38:37,868 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907056, now seen corresponding path program 20 times [2022-03-01 15:38:37,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:37,869 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277332094] [2022-03-01 15:38:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:38,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:38,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277332094] [2022-03-01 15:38:38,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277332094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:38,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:38,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:38:38,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574452496] [2022-03-01 15:38:38,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:38,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:38:38,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:38:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:38:38,296 INFO L87 Difference]: Start difference. First operand 19643 states and 56849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:39,234 INFO L93 Difference]: Finished difference Result 28944 states and 83786 transitions. [2022-03-01 15:38:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:38:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:39,287 INFO L225 Difference]: With dead ends: 28944 [2022-03-01 15:38:39,287 INFO L226 Difference]: Without dead ends: 28944 [2022-03-01 15:38:39,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:38:39,288 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1161 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:39,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 3341 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28944 states. [2022-03-01 15:38:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28944 to 19603. [2022-03-01 15:38:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19603 states, 19602 states have (on average 2.892612998673605) internal successors, (56701), 19602 states have internal predecessors, (56701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19603 states to 19603 states and 56701 transitions. [2022-03-01 15:38:39,701 INFO L78 Accepts]: Start accepts. Automaton has 19603 states and 56701 transitions. Word has length 177 [2022-03-01 15:38:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:39,701 INFO L470 AbstractCegarLoop]: Abstraction has 19603 states and 56701 transitions. [2022-03-01 15:38:39,702 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) [2022-03-01 15:38:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 19603 states and 56701 transitions. [2022-03-01 15:38:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:39,729 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:39,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:39,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-01 15:38:39,729 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash -668146084, now seen corresponding path program 26 times [2022-03-01 15:38:39,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:39,730 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223169254] [2022-03-01 15:38:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:40,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:40,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223169254] [2022-03-01 15:38:40,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223169254] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:40,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:40,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:38:40,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894644856] [2022-03-01 15:38:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:40,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:38:40,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:38:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:38:40,159 INFO L87 Difference]: Start difference. First operand 19603 states and 56701 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:41,165 INFO L93 Difference]: Finished difference Result 29958 states and 86552 transitions. [2022-03-01 15:38:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 15:38:41,165 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:41,220 INFO L225 Difference]: With dead ends: 29958 [2022-03-01 15:38:41,220 INFO L226 Difference]: Without dead ends: 29958 [2022-03-01 15:38:41,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=581, Invalid=1969, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 15:38:41,221 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1181 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:41,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 3406 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29958 states. [2022-03-01 15:38:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29958 to 19561. [2022-03-01 15:38:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19561 states, 19560 states have (on average 2.892075664621677) internal successors, (56569), 19560 states have internal predecessors, (56569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19561 states to 19561 states and 56569 transitions. [2022-03-01 15:38:41,573 INFO L78 Accepts]: Start accepts. Automaton has 19561 states and 56569 transitions. Word has length 177 [2022-03-01 15:38:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:41,573 INFO L470 AbstractCegarLoop]: Abstraction has 19561 states and 56569 transitions. [2022-03-01 15:38:41,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 19561 states and 56569 transitions. [2022-03-01 15:38:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:41,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:41,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:41,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-01 15:38:41,601 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1696693896, now seen corresponding path program 27 times [2022-03-01 15:38:41,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:41,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846961902] [2022-03-01 15:38:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:41,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:42,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:42,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846961902] [2022-03-01 15:38:42,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846961902] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:38:42,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341130715] [2022-03-01 15:38:42,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:38:42,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:38:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:38:42,040 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:38:42,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 15:38:42,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:38:42,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:38:42,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-01 15:38:42,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:38:42,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:38:42,291 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:38:42,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:38:42,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:38:42,798 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:38:42,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:38:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:42,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:38:43,055 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2777 (Array Int Int)) (~get2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2777))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))))))) is different from false [2022-03-01 15:38:43,094 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-01 15:38:43,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-01 15:38:43,111 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:38:43,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-01 15:38:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:43,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341130715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:38:43,757 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:38:43,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 41 [2022-03-01 15:38:43,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787286938] [2022-03-01 15:38:43,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:38:43,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 15:38:43,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 15:38:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1397, Unknown=1, NotChecked=76, Total=1640 [2022-03-01 15:38:43,758 INFO L87 Difference]: Start difference. First operand 19561 states and 56569 transitions. Second operand has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:45,903 INFO L93 Difference]: Finished difference Result 37391 states and 107919 transitions. [2022-03-01 15:38:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:38:45,903 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:45,974 INFO L225 Difference]: With dead ends: 37391 [2022-03-01 15:38:45,974 INFO L226 Difference]: Without dead ends: 37391 [2022-03-01 15:38:45,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1366, Invalid=5609, Unknown=1, NotChecked=164, Total=7140 [2022-03-01 15:38:45,975 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 2500 mSDsluCounter, 7750 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 8044 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 799 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:45,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 8044 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2178 Invalid, 0 Unknown, 799 Unchecked, 0.9s Time] [2022-03-01 15:38:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37391 states. [2022-03-01 15:38:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37391 to 18717. [2022-03-01 15:38:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.888597991023723) internal successors, (54063), 18716 states have internal predecessors, (54063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54063 transitions. [2022-03-01 15:38:46,374 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54063 transitions. Word has length 177 [2022-03-01 15:38:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:46,374 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54063 transitions. [2022-03-01 15:38:46,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54063 transitions. [2022-03-01 15:38:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:46,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:46,398 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] [2022-03-01 15:38:46,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-01 15:38:46,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-01 15:38:46,599 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 100811472, now seen corresponding path program 29 times [2022-03-01 15:38:46,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:46,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988742108] [2022-03-01 15:38:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:47,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:47,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988742108] [2022-03-01 15:38:47,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988742108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:47,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:47,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:38:47,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540309575] [2022-03-01 15:38:47,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:47,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:38:47,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:47,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:38:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:38:47,033 INFO L87 Difference]: Start difference. First operand 18717 states and 54063 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:47,958 INFO L93 Difference]: Finished difference Result 28760 states and 83026 transitions. [2022-03-01 15:38:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 15:38:47,958 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:48,011 INFO L225 Difference]: With dead ends: 28760 [2022-03-01 15:38:48,012 INFO L226 Difference]: Without dead ends: 28760 [2022-03-01 15:38:48,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:38:48,012 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1196 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:48,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3291 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28760 states. [2022-03-01 15:38:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28760 to 18717. [2022-03-01 15:38:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.888597991023723) internal successors, (54063), 18716 states have internal predecessors, (54063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54063 transitions. [2022-03-01 15:38:48,342 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54063 transitions. Word has length 177 [2022-03-01 15:38:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:48,342 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54063 transitions. [2022-03-01 15:38:48,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54063 transitions. [2022-03-01 15:38:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:48,367 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:48,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:48,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-01 15:38:48,367 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash 928073972, now seen corresponding path program 39 times [2022-03-01 15:38:48,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:48,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739883697] [2022-03-01 15:38:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:48,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:48,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:48,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739883697] [2022-03-01 15:38:48,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739883697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:38:48,799 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:38:48,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:38:48,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836109728] [2022-03-01 15:38:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:38:48,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:38:48,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:38:48,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:38:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:38:48,800 INFO L87 Difference]: Start difference. First operand 18717 states and 54063 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:38:49,756 INFO L93 Difference]: Finished difference Result 27802 states and 80242 transitions. [2022-03-01 15:38:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 15:38:49,756 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:38:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:38:49,807 INFO L225 Difference]: With dead ends: 27802 [2022-03-01 15:38:49,807 INFO L226 Difference]: Without dead ends: 27802 [2022-03-01 15:38:49,808 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 [2022-03-01 15:38:49,808 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1123 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:38:49,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3080 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:38:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27802 states. [2022-03-01 15:38:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27802 to 18741. [2022-03-01 15:38:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.888740661686233) internal successors, (54135), 18740 states have internal predecessors, (54135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54135 transitions. [2022-03-01 15:38:50,142 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54135 transitions. Word has length 177 [2022-03-01 15:38:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:38:50,142 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54135 transitions. [2022-03-01 15:38:50,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:38:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54135 transitions. [2022-03-01 15:38:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:38:50,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:38:50,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:38:50,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-01 15:38:50,169 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:38:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:38:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1838249696, now seen corresponding path program 40 times [2022-03-01 15:38:50,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:38:50,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615565818] [2022-03-01 15:38:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:38:50,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:38:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:38:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:38:50,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:38:50,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615565818] [2022-03-01 15:38:50,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615565818] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:38:50,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706551061] [2022-03-01 15:38:50,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:38:50,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:38:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:38:50,578 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:38:50,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 15:38:50,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:38:50,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:38:50,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 15:38:50,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:38:50,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:38:51,003 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:38:51,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:38:51,511 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:38:51,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:38:51,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:38:52,397 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:38:52,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:38:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:38:52,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:38:53,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:38:53,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2022-03-01 15:38:53,497 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-01 15:38:53,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1427 treesize of output 1251 [2022-03-01 15:38:53,513 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:38:53,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1251 treesize of output 1115 [2022-03-01 15:38:53,526 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:38:53,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1027 [2022-03-01 15:39:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:39:04,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706551061] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:39:04,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:39:04,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 24] total 69 [2022-03-01 15:39:04,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260243750] [2022-03-01 15:39:04,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:39:04,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-01 15:39:04,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-01 15:39:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=4212, Unknown=97, NotChecked=0, Total=4692 [2022-03-01 15:39:04,698 INFO L87 Difference]: Start difference. First operand 18741 states and 54135 transitions. Second operand has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:14,920 INFO L93 Difference]: Finished difference Result 61799 states and 178156 transitions. [2022-03-01 15:39:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 15:39:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:15,054 INFO L225 Difference]: With dead ends: 61799 [2022-03-01 15:39:15,054 INFO L226 Difference]: Without dead ends: 61799 [2022-03-01 15:39:15,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 310 SyntacticMatches, 17 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 6574 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4569, Invalid=18590, Unknown=97, NotChecked=0, Total=23256 [2022-03-01 15:39:15,057 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 5492 mSDsluCounter, 13705 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5492 SdHoareTripleChecker+Valid, 13881 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1496 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:15,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5492 Valid, 13881 Invalid, 5721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 4172 Invalid, 0 Unknown, 1496 Unchecked, 1.8s Time] [2022-03-01 15:39:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61799 states. [2022-03-01 15:39:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61799 to 19093. [2022-03-01 15:39:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19093 states, 19092 states have (on average 2.8942489000628537) internal successors, (55257), 19092 states have internal predecessors, (55257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19093 states to 19093 states and 55257 transitions. [2022-03-01 15:39:15,675 INFO L78 Accepts]: Start accepts. Automaton has 19093 states and 55257 transitions. Word has length 177 [2022-03-01 15:39:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:15,675 INFO L470 AbstractCegarLoop]: Abstraction has 19093 states and 55257 transitions. [2022-03-01 15:39:15,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 19093 states and 55257 transitions. [2022-03-01 15:39:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:15,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:15,700 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] [2022-03-01 15:39:15,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 15:39:15,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-01 15:39:15,901 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1595530710, now seen corresponding path program 30 times [2022-03-01 15:39:15,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:15,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318142920] [2022-03-01 15:39:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:16,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:16,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318142920] [2022-03-01 15:39:16,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318142920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:16,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:16,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:16,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830275046] [2022-03-01 15:39:16,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:16,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:16,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:16,602 INFO L87 Difference]: Start difference. First operand 19093 states and 55257 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:17,474 INFO L93 Difference]: Finished difference Result 28754 states and 83090 transitions. [2022-03-01 15:39:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:17,474 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:17,530 INFO L225 Difference]: With dead ends: 28754 [2022-03-01 15:39:17,530 INFO L226 Difference]: Without dead ends: 28754 [2022-03-01 15:39:17,530 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 [2022-03-01 15:39:17,530 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1099 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:17,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 2980 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28754 states. [2022-03-01 15:39:17,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28754 to 19109. [2022-03-01 15:39:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 2.894965459493406) internal successors, (55317), 19108 states have internal predecessors, (55317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 55317 transitions. [2022-03-01 15:39:17,868 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 55317 transitions. Word has length 177 [2022-03-01 15:39:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:17,868 INFO L470 AbstractCegarLoop]: Abstraction has 19109 states and 55317 transitions. [2022-03-01 15:39:17,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 55317 transitions. [2022-03-01 15:39:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:17,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:17,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:17,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-01 15:39:17,894 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1783410800, now seen corresponding path program 28 times [2022-03-01 15:39:17,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:17,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279020770] [2022-03-01 15:39:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:18,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:18,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279020770] [2022-03-01 15:39:18,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279020770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:18,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:18,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:39:18,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967044684] [2022-03-01 15:39:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:18,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:39:18,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:39:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:39:18,319 INFO L87 Difference]: Start difference. First operand 19109 states and 55317 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:19,221 INFO L93 Difference]: Finished difference Result 28234 states and 81614 transitions. [2022-03-01 15:39:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:19,275 INFO L225 Difference]: With dead ends: 28234 [2022-03-01 15:39:19,275 INFO L226 Difference]: Without dead ends: 28234 [2022-03-01 15:39:19,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:39:19,276 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1121 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:19,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3267 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28234 states. [2022-03-01 15:39:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28234 to 19117. [2022-03-01 15:39:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19117 states, 19116 states have (on average 2.894904791797447) internal successors, (55339), 19116 states have internal predecessors, (55339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19117 states to 19117 states and 55339 transitions. [2022-03-01 15:39:19,612 INFO L78 Accepts]: Start accepts. Automaton has 19117 states and 55339 transitions. Word has length 177 [2022-03-01 15:39:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:19,612 INFO L470 AbstractCegarLoop]: Abstraction has 19117 states and 55339 transitions. [2022-03-01 15:39:19,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 19117 states and 55339 transitions. [2022-03-01 15:39:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:19,640 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:19,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:19,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-01 15:39:19,640 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -387669902, now seen corresponding path program 41 times [2022-03-01 15:39:19,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:19,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737001363] [2022-03-01 15:39:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:20,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:20,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737001363] [2022-03-01 15:39:20,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737001363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:20,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:20,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:20,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301913052] [2022-03-01 15:39:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:20,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:20,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:20,079 INFO L87 Difference]: Start difference. First operand 19117 states and 55339 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:20,973 INFO L93 Difference]: Finished difference Result 27610 states and 79860 transitions. [2022-03-01 15:39:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:21,028 INFO L225 Difference]: With dead ends: 27610 [2022-03-01 15:39:21,028 INFO L226 Difference]: Without dead ends: 27610 [2022-03-01 15:39:21,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:39:21,028 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1219 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:21,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 2928 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-03-01 15:39:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 19109. [2022-03-01 15:39:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 2.894965459493406) internal successors, (55317), 19108 states have internal predecessors, (55317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 55317 transitions. [2022-03-01 15:39:21,359 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 55317 transitions. Word has length 177 [2022-03-01 15:39:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:21,359 INFO L470 AbstractCegarLoop]: Abstraction has 19109 states and 55317 transitions. [2022-03-01 15:39:21,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 55317 transitions. [2022-03-01 15:39:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:21,384 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:21,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:21,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-01 15:39:21,385 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:21,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash 75904840, now seen corresponding path program 21 times [2022-03-01 15:39:21,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:21,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001464900] [2022-03-01 15:39:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:21,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:21,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:21,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001464900] [2022-03-01 15:39:21,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001464900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:21,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:21,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:39:21,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749789505] [2022-03-01 15:39:21,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:21,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:39:21,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:39:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:39:21,819 INFO L87 Difference]: Start difference. First operand 19109 states and 55317 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:22,762 INFO L93 Difference]: Finished difference Result 27826 states and 80486 transitions. [2022-03-01 15:39:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:22,814 INFO L225 Difference]: With dead ends: 27826 [2022-03-01 15:39:22,814 INFO L226 Difference]: Without dead ends: 27826 [2022-03-01 15:39:22,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:39:22,815 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1243 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:22,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 3264 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27826 states. [2022-03-01 15:39:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27826 to 19085. [2022-03-01 15:39:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 2.8938901697757284) internal successors, (55227), 19084 states have internal predecessors, (55227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 55227 transitions. [2022-03-01 15:39:23,392 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 55227 transitions. Word has length 177 [2022-03-01 15:39:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:23,392 INFO L470 AbstractCegarLoop]: Abstraction has 19085 states and 55227 transitions. [2022-03-01 15:39:23,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 55227 transitions. [2022-03-01 15:39:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:23,417 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:23,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:23,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-01 15:39:23,418 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash 29862778, now seen corresponding path program 31 times [2022-03-01 15:39:23,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:23,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468315364] [2022-03-01 15:39:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:23,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:23,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:23,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468315364] [2022-03-01 15:39:23,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468315364] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:23,843 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:23,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:23,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563236128] [2022-03-01 15:39:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:23,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:23,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:23,844 INFO L87 Difference]: Start difference. First operand 19085 states and 55227 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:24,729 INFO L93 Difference]: Finished difference Result 28602 states and 82592 transitions. [2022-03-01 15:39:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 15:39:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:24,782 INFO L225 Difference]: With dead ends: 28602 [2022-03-01 15:39:24,782 INFO L226 Difference]: Without dead ends: 28602 [2022-03-01 15:39:24,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:39:24,783 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1103 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:24,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 3348 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28602 states. [2022-03-01 15:39:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28602 to 19085. [2022-03-01 15:39:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 2.8934709704464474) internal successors, (55219), 19084 states have internal predecessors, (55219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 55219 transitions. [2022-03-01 15:39:25,341 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 55219 transitions. Word has length 177 [2022-03-01 15:39:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:25,342 INFO L470 AbstractCegarLoop]: Abstraction has 19085 states and 55219 transitions. [2022-03-01 15:39:25,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 55219 transitions. [2022-03-01 15:39:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:25,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:25,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:25,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-01 15:39:25,367 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:25,367 INFO L85 PathProgramCache]: Analyzing trace with hash -158017312, now seen corresponding path program 29 times [2022-03-01 15:39:25,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:25,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404154906] [2022-03-01 15:39:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:25,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:25,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:25,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404154906] [2022-03-01 15:39:25,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404154906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:25,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:25,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:39:25,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522704560] [2022-03-01 15:39:25,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:25,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:39:25,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:39:25,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:39:25,797 INFO L87 Difference]: Start difference. First operand 19085 states and 55219 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:26,695 INFO L93 Difference]: Finished difference Result 27578 states and 79554 transitions. [2022-03-01 15:39:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 15:39:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:26,746 INFO L225 Difference]: With dead ends: 27578 [2022-03-01 15:39:26,746 INFO L226 Difference]: Without dead ends: 27578 [2022-03-01 15:39:26,746 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 [2022-03-01 15:39:26,746 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1078 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:26,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 3404 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27578 states. [2022-03-01 15:39:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27578 to 18741. [2022-03-01 15:39:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.8879935965848453) internal successors, (54121), 18740 states have internal predecessors, (54121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54121 transitions. [2022-03-01 15:39:27,066 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54121 transitions. Word has length 177 [2022-03-01 15:39:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:27,066 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54121 transitions. [2022-03-01 15:39:27,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54121 transitions. [2022-03-01 15:39:27,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:27,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:27,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:27,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-01 15:39:27,092 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1237723586, now seen corresponding path program 42 times [2022-03-01 15:39:27,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:27,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415346945] [2022-03-01 15:39:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:27,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:27,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:27,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415346945] [2022-03-01 15:39:27,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415346945] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:27,525 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:27,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:27,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339481804] [2022-03-01 15:39:27,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:27,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:27,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:27,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:27,526 INFO L87 Difference]: Start difference. First operand 18741 states and 54121 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:28,461 INFO L93 Difference]: Finished difference Result 26978 states and 77866 transitions. [2022-03-01 15:39:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:28,514 INFO L225 Difference]: With dead ends: 26978 [2022-03-01 15:39:28,514 INFO L226 Difference]: Without dead ends: 26978 [2022-03-01 15:39:28,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:39:28,515 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1403 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:28,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 3232 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26978 states. [2022-03-01 15:39:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26978 to 18741. [2022-03-01 15:39:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.8879935965848453) internal successors, (54121), 18740 states have internal predecessors, (54121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54121 transitions. [2022-03-01 15:39:28,840 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54121 transitions. Word has length 177 [2022-03-01 15:39:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:28,841 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54121 transitions. [2022-03-01 15:39:28,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54121 transitions. [2022-03-01 15:39:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:28,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:28,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:28,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-01 15:39:28,867 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1701298328, now seen corresponding path program 22 times [2022-03-01 15:39:28,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:28,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147762819] [2022-03-01 15:39:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:28,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:29,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:29,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147762819] [2022-03-01 15:39:29,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147762819] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:29,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:29,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:39:29,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124202569] [2022-03-01 15:39:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:29,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:39:29,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:39:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:39:29,312 INFO L87 Difference]: Start difference. First operand 18741 states and 54121 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:30,225 INFO L93 Difference]: Finished difference Result 27202 states and 78514 transitions. [2022-03-01 15:39:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:30,225 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:30,279 INFO L225 Difference]: With dead ends: 27202 [2022-03-01 15:39:30,280 INFO L226 Difference]: Without dead ends: 27202 [2022-03-01 15:39:30,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1604, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 15:39:30,280 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1226 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:30,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 3127 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:30,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27202 states. [2022-03-01 15:39:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27202 to 18733. [2022-03-01 15:39:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18732 states have (on average 2.887198377108691) internal successors, (54083), 18732 states have internal predecessors, (54083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 54083 transitions. [2022-03-01 15:39:30,613 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 54083 transitions. Word has length 177 [2022-03-01 15:39:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:30,613 INFO L470 AbstractCegarLoop]: Abstraction has 18733 states and 54083 transitions. [2022-03-01 15:39:30,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 54083 transitions. [2022-03-01 15:39:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:30,639 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:30,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:30,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-01 15:39:30,639 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 981087844, now seen corresponding path program 43 times [2022-03-01 15:39:30,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:30,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973204518] [2022-03-01 15:39:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:31,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:31,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973204518] [2022-03-01 15:39:31,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973204518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:31,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:31,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:31,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720719128] [2022-03-01 15:39:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:31,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:31,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:31,129 INFO L87 Difference]: Start difference. First operand 18733 states and 54083 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:32,161 INFO L93 Difference]: Finished difference Result 26890 states and 77576 transitions. [2022-03-01 15:39:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 15:39:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:32,211 INFO L225 Difference]: With dead ends: 26890 [2022-03-01 15:39:32,211 INFO L226 Difference]: Without dead ends: 26890 [2022-03-01 15:39:32,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:39:32,212 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1258 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:32,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 2960 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26890 states. [2022-03-01 15:39:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26890 to 18717. [2022-03-01 15:39:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.8873156657405428) internal successors, (54039), 18716 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54039 transitions. [2022-03-01 15:39:32,542 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54039 transitions. Word has length 177 [2022-03-01 15:39:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:32,543 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54039 transitions. [2022-03-01 15:39:32,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54039 transitions. [2022-03-01 15:39:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:32,568 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:32,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:32,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-01 15:39:32,568 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1275970236, now seen corresponding path program 23 times [2022-03-01 15:39:32,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:32,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967740215] [2022-03-01 15:39:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:32,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:32,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:32,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967740215] [2022-03-01 15:39:32,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967740215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:32,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:32,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:39:32,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223526208] [2022-03-01 15:39:32,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:32,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:39:32,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:39:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:39:32,986 INFO L87 Difference]: Start difference. First operand 18717 states and 54039 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:33,873 INFO L93 Difference]: Finished difference Result 26970 states and 77820 transitions. [2022-03-01 15:39:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 15:39:33,873 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:33,922 INFO L225 Difference]: With dead ends: 26970 [2022-03-01 15:39:33,923 INFO L226 Difference]: Without dead ends: 26970 [2022-03-01 15:39:33,923 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 [2022-03-01 15:39:33,923 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1208 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:33,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 2658 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:39:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26970 states. [2022-03-01 15:39:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26970 to 18733. [2022-03-01 15:39:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18732 states have (on average 2.887198377108691) internal successors, (54083), 18732 states have internal predecessors, (54083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 54083 transitions. [2022-03-01 15:39:34,243 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 54083 transitions. Word has length 177 [2022-03-01 15:39:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:34,243 INFO L470 AbstractCegarLoop]: Abstraction has 18733 states and 54083 transitions. [2022-03-01 15:39:34,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 54083 transitions. [2022-03-01 15:39:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:34,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:34,268 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] [2022-03-01 15:39:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-01 15:39:34,269 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash -818393186, now seen corresponding path program 24 times [2022-03-01 15:39:34,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:34,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453898219] [2022-03-01 15:39:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:34,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:34,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453898219] [2022-03-01 15:39:34,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453898219] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:34,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:34,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:39:34,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741248878] [2022-03-01 15:39:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:34,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:39:34,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:39:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:39:34,698 INFO L87 Difference]: Start difference. First operand 18733 states and 54083 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:35,707 INFO L93 Difference]: Finished difference Result 27586 states and 79586 transitions. [2022-03-01 15:39:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 15:39:35,707 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:35,759 INFO L225 Difference]: With dead ends: 27586 [2022-03-01 15:39:35,759 INFO L226 Difference]: Without dead ends: 27586 [2022-03-01 15:39:35,760 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 [2022-03-01 15:39:35,760 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1136 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:35,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 3376 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:39:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27586 states. [2022-03-01 15:39:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27586 to 18459. [2022-03-01 15:39:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18459 states, 18458 states have (on average 2.887907682305775) internal successors, (53305), 18458 states have internal predecessors, (53305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18459 states to 18459 states and 53305 transitions. [2022-03-01 15:39:36,081 INFO L78 Accepts]: Start accepts. Automaton has 18459 states and 53305 transitions. Word has length 177 [2022-03-01 15:39:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:36,081 INFO L470 AbstractCegarLoop]: Abstraction has 18459 states and 53305 transitions. [2022-03-01 15:39:36,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18459 states and 53305 transitions. [2022-03-01 15:39:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:36,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:36,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:36,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-01 15:39:36,107 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1065664872, now seen corresponding path program 44 times [2022-03-01 15:39:36,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:36,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975889036] [2022-03-01 15:39:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:36,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:36,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975889036] [2022-03-01 15:39:36,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975889036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:39:36,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448433978] [2022-03-01 15:39:36,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:39:36,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:39:36,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:39:36,560 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:39:36,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 15:39:36,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:39:36,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:39:36,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-01 15:39:36,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:39:36,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:39:36,839 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:39:36,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:39:37,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 15:39:37,477 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:39:37,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-01 15:39:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:37,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:39:37,770 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3056 (Array Int Int)) (~get2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3056))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (< (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|) (<= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-01 15:39:37,814 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-01 15:39:37,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-01 15:39:37,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:39:37,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-01 15:39:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:38,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448433978] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:39:38,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:39:38,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-01 15:39:38,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970343979] [2022-03-01 15:39:38,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:39:38,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 15:39:38,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 15:39:38,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1467, Unknown=1, NotChecked=78, Total=1722 [2022-03-01 15:39:38,796 INFO L87 Difference]: Start difference. First operand 18459 states and 53305 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:41,026 INFO L93 Difference]: Finished difference Result 31428 states and 90352 transitions. [2022-03-01 15:39:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:39:41,027 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:41,088 INFO L225 Difference]: With dead ends: 31428 [2022-03-01 15:39:41,088 INFO L226 Difference]: Without dead ends: 31428 [2022-03-01 15:39:41,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1335, Invalid=5640, Unknown=1, NotChecked=164, Total=7140 [2022-03-01 15:39:41,089 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 2199 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 7590 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 677 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:41,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 7590 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2170 Invalid, 0 Unknown, 677 Unchecked, 0.9s Time] [2022-03-01 15:39:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2022-03-01 15:39:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 18409. [2022-03-01 15:39:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18409 states, 18408 states have (on average 2.8883637548891787) internal successors, (53169), 18408 states have internal predecessors, (53169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 53169 transitions. [2022-03-01 15:39:41,452 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 53169 transitions. Word has length 177 [2022-03-01 15:39:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:41,453 INFO L470 AbstractCegarLoop]: Abstraction has 18409 states and 53169 transitions. [2022-03-01 15:39:41,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 53169 transitions. [2022-03-01 15:39:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:41,479 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:41,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:41,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-01 15:39:41,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-03-01 15:39:41,679 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 99296670, now seen corresponding path program 32 times [2022-03-01 15:39:41,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:41,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245915494] [2022-03-01 15:39:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:42,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:42,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245915494] [2022-03-01 15:39:42,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245915494] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:42,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:42,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:42,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595665632] [2022-03-01 15:39:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:42,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:42,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:42,140 INFO L87 Difference]: Start difference. First operand 18409 states and 53169 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:43,286 INFO L93 Difference]: Finished difference Result 28669 states and 82379 transitions. [2022-03-01 15:39:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:39:43,286 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:43,338 INFO L225 Difference]: With dead ends: 28669 [2022-03-01 15:39:43,339 INFO L226 Difference]: Without dead ends: 28669 [2022-03-01 15:39:43,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=440, Invalid=1722, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:39:43,339 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1391 mSDsluCounter, 4868 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:43,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 5173 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:39:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28669 states. [2022-03-01 15:39:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28669 to 18471. [2022-03-01 15:39:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18471 states, 18470 states have (on average 2.8829994585814833) internal successors, (53249), 18470 states have internal predecessors, (53249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18471 states to 18471 states and 53249 transitions. [2022-03-01 15:39:43,668 INFO L78 Accepts]: Start accepts. Automaton has 18471 states and 53249 transitions. Word has length 177 [2022-03-01 15:39:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:43,668 INFO L470 AbstractCegarLoop]: Abstraction has 18471 states and 53249 transitions. [2022-03-01 15:39:43,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 18471 states and 53249 transitions. [2022-03-01 15:39:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:43,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:43,692 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] [2022-03-01 15:39:43,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-01 15:39:43,693 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 719692692, now seen corresponding path program 45 times [2022-03-01 15:39:43,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:43,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935313399] [2022-03-01 15:39:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:43,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:44,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:44,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935313399] [2022-03-01 15:39:44,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935313399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:39:44,140 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:39:44,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:39:44,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373671319] [2022-03-01 15:39:44,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:39:44,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:39:44,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:39:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:39:44,141 INFO L87 Difference]: Start difference. First operand 18471 states and 53249 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:39:45,206 INFO L93 Difference]: Finished difference Result 25764 states and 74264 transitions. [2022-03-01 15:39:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:39:45,206 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:39:45,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:39:45,273 INFO L225 Difference]: With dead ends: 25764 [2022-03-01 15:39:45,274 INFO L226 Difference]: Without dead ends: 25764 [2022-03-01 15:39:45,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 15:39:45,274 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1140 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:39:45,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 4487 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:39:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25764 states. [2022-03-01 15:39:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25764 to 18711. [2022-03-01 15:39:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18711 states, 18710 states have (on average 2.8793693212186) internal successors, (53873), 18710 states have internal predecessors, (53873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18711 states to 18711 states and 53873 transitions. [2022-03-01 15:39:45,621 INFO L78 Accepts]: Start accepts. Automaton has 18711 states and 53873 transitions. Word has length 177 [2022-03-01 15:39:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:39:45,621 INFO L470 AbstractCegarLoop]: Abstraction has 18711 states and 53873 transitions. [2022-03-01 15:39:45,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:39:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 18711 states and 53873 transitions. [2022-03-01 15:39:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:39:45,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:39:45,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:39:45,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-01 15:39:45,647 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:39:45,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:39:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -810387584, now seen corresponding path program 46 times [2022-03-01 15:39:45,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:39:45,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058720452] [2022-03-01 15:39:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:39:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:39:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:39:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:39:46,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:39:46,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058720452] [2022-03-01 15:39:46,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058720452] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:39:46,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869727915] [2022-03-01 15:39:46,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:39:46,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:39:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:39:46,229 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:39:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 15:39:46,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:39:46,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:39:46,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-01 15:39:46,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:39:47,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:39:47,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:39:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:39:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:39:47,599 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:39:47,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-01 15:39:48,057 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:39:48,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:39:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:39:48,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:39:49,147 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:39:49,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 53 [2022-03-01 15:39:49,154 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-01 15:39:49,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1207 treesize of output 1063 [2022-03-01 15:39:49,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:39:49,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1063 treesize of output 999 [2022-03-01 15:39:49,183 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:39:49,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2022-03-01 15:39:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:39:59,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869727915] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:39:59,009 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:39:59,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 25] total 71 [2022-03-01 15:39:59,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935767898] [2022-03-01 15:39:59,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:39:59,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-01 15:39:59,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:39:59,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-01 15:39:59,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=4578, Unknown=98, NotChecked=0, Total=4970 [2022-03-01 15:39:59,010 INFO L87 Difference]: Start difference. First operand 18711 states and 53873 transitions. Second operand has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:06,477 INFO L93 Difference]: Finished difference Result 35008 states and 100868 transitions. [2022-03-01 15:40:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 15:40:06,478 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:06,543 INFO L225 Difference]: With dead ends: 35008 [2022-03-01 15:40:06,543 INFO L226 Difference]: Without dead ends: 35008 [2022-03-01 15:40:06,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 308 SyntacticMatches, 16 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2406, Invalid=12258, Unknown=98, NotChecked=0, Total=14762 [2022-03-01 15:40:06,544 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 5193 mSDsluCounter, 15462 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 15645 SdHoareTripleChecker+Invalid, 5010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:06,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5193 Valid, 15645 Invalid, 5010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4273 Invalid, 0 Unknown, 700 Unchecked, 1.8s Time] [2022-03-01 15:40:06,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35008 states. [2022-03-01 15:40:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35008 to 19551. [2022-03-01 15:40:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19551 states, 19550 states have (on average 2.8847570332480816) internal successors, (56397), 19550 states have internal predecessors, (56397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 56397 transitions. [2022-03-01 15:40:06,939 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 56397 transitions. Word has length 177 [2022-03-01 15:40:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 19551 states and 56397 transitions. [2022-03-01 15:40:06,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 56397 transitions. [2022-03-01 15:40:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:06,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:06,967 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] [2022-03-01 15:40:06,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-01 15:40:07,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:07,167 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:07,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1991958410, now seen corresponding path program 30 times [2022-03-01 15:40:07,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:07,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673194059] [2022-03-01 15:40:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:07,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:07,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673194059] [2022-03-01 15:40:07,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673194059] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:40:07,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109534111] [2022-03-01 15:40:07,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:40:07,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:07,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:40:07,675 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:40:07,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 15:40:07,862 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:40:07,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:40:07,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:40:07,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:40:07,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:40:08,084 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:40:08,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:40:08,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:40:08,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:40:08,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:40:08,938 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:40:08,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-01 15:40:09,146 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:40:09,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:40:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:40:09,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:40:09,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:40:09,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-03-01 15:40:09,964 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-01 15:40:09,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1212 treesize of output 1068 [2022-03-01 15:40:09,985 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:40:09,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1068 treesize of output 1004 [2022-03-01 15:40:10,000 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:40:10,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2022-03-01 15:40:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:40:11,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109534111] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:40:11,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:40:11,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 65 [2022-03-01 15:40:11,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882850127] [2022-03-01 15:40:11,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:40:11,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-01 15:40:11,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-01 15:40:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3852, Unknown=68, NotChecked=0, Total=4160 [2022-03-01 15:40:11,999 INFO L87 Difference]: Start difference. First operand 19551 states and 56397 transitions. Second operand has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:16,126 INFO L93 Difference]: Finished difference Result 27703 states and 79763 transitions. [2022-03-01 15:40:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:40:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:16,178 INFO L225 Difference]: With dead ends: 27703 [2022-03-01 15:40:16,178 INFO L226 Difference]: Without dead ends: 27703 [2022-03-01 15:40:16,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 314 SyntacticMatches, 9 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1741, Invalid=8903, Unknown=68, NotChecked=0, Total=10712 [2022-03-01 15:40:16,180 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 3607 mSDsluCounter, 10705 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3607 SdHoareTripleChecker+Valid, 10885 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3607 Valid, 10885 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2785 Invalid, 0 Unknown, 522 Unchecked, 1.1s Time] [2022-03-01 15:40:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27703 states. [2022-03-01 15:40:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27703 to 17751. [2022-03-01 15:40:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17751 states, 17750 states have (on average 2.887042253521127) internal successors, (51245), 17750 states have internal predecessors, (51245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17751 states to 17751 states and 51245 transitions. [2022-03-01 15:40:16,486 INFO L78 Accepts]: Start accepts. Automaton has 17751 states and 51245 transitions. Word has length 177 [2022-03-01 15:40:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:16,487 INFO L470 AbstractCegarLoop]: Abstraction has 17751 states and 51245 transitions. [2022-03-01 15:40:16,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 17751 states and 51245 transitions. [2022-03-01 15:40:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:16,510 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:16,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:16,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-01 15:40:16,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:16,711 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -488322240, now seen corresponding path program 33 times [2022-03-01 15:40:16,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:16,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685435000] [2022-03-01 15:40:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:17,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:17,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685435000] [2022-03-01 15:40:17,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685435000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:17,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:17,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-01 15:40:17,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701554963] [2022-03-01 15:40:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:17,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 15:40:17,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 15:40:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:40:17,279 INFO L87 Difference]: Start difference. First operand 17751 states and 51245 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:18,726 INFO L93 Difference]: Finished difference Result 29943 states and 86289 transitions. [2022-03-01 15:40:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 15:40:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:18,784 INFO L225 Difference]: With dead ends: 29943 [2022-03-01 15:40:18,784 INFO L226 Difference]: Without dead ends: 29943 [2022-03-01 15:40:18,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=550, Invalid=2102, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 15:40:18,784 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1615 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:18,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 4609 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 15:40:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29943 states. [2022-03-01 15:40:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29943 to 17703. [2022-03-01 15:40:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17703 states, 17702 states have (on average 2.8874138515421985) internal successors, (51113), 17702 states have internal predecessors, (51113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17703 states to 17703 states and 51113 transitions. [2022-03-01 15:40:19,118 INFO L78 Accepts]: Start accepts. Automaton has 17703 states and 51113 transitions. Word has length 177 [2022-03-01 15:40:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 17703 states and 51113 transitions. [2022-03-01 15:40:19,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 17703 states and 51113 transitions. [2022-03-01 15:40:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:19,142 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:19,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:19,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-01 15:40:19,142 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:19,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -650611166, now seen corresponding path program 34 times [2022-03-01 15:40:19,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:19,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26778987] [2022-03-01 15:40:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:19,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:19,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26778987] [2022-03-01 15:40:19,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26778987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:19,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:19,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-01 15:40:19,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760988549] [2022-03-01 15:40:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:19,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 15:40:19,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 15:40:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:40:19,698 INFO L87 Difference]: Start difference. First operand 17703 states and 51113 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:20,976 INFO L93 Difference]: Finished difference Result 26282 states and 76020 transitions. [2022-03-01 15:40:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:40:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:21,025 INFO L225 Difference]: With dead ends: 26282 [2022-03-01 15:40:21,026 INFO L226 Difference]: Without dead ends: 26282 [2022-03-01 15:40:21,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:40:21,026 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1450 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:21,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 3991 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:40:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26282 states. [2022-03-01 15:40:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26282 to 17679. [2022-03-01 15:40:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17679 states, 17678 states have (on average 2.887600407285892) internal successors, (51047), 17678 states have internal predecessors, (51047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17679 states to 17679 states and 51047 transitions. [2022-03-01 15:40:21,428 INFO L78 Accepts]: Start accepts. Automaton has 17679 states and 51047 transitions. Word has length 177 [2022-03-01 15:40:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:21,428 INFO L470 AbstractCegarLoop]: Abstraction has 17679 states and 51047 transitions. [2022-03-01 15:40:21,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 17679 states and 51047 transitions. [2022-03-01 15:40:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:21,452 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:21,452 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] [2022-03-01 15:40:21,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-01 15:40:21,452 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1948013948, now seen corresponding path program 35 times [2022-03-01 15:40:21,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:21,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47703640] [2022-03-01 15:40:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:21,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:21,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47703640] [2022-03-01 15:40:21,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47703640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:21,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:21,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-01 15:40:21,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010458206] [2022-03-01 15:40:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:21,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 15:40:21,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 15:40:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:40:21,913 INFO L87 Difference]: Start difference. First operand 17679 states and 51047 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:22,950 INFO L93 Difference]: Finished difference Result 25548 states and 73826 transitions. [2022-03-01 15:40:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:40:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:22,999 INFO L225 Difference]: With dead ends: 25548 [2022-03-01 15:40:22,999 INFO L226 Difference]: Without dead ends: 25548 [2022-03-01 15:40:23,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=1463, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 15:40:23,000 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1284 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:23,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 4068 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:40:23,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25548 states. [2022-03-01 15:40:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25548 to 17655. [2022-03-01 15:40:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17655 states, 17654 states have (on average 2.8859748498923756) internal successors, (50949), 17654 states have internal predecessors, (50949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17655 states to 17655 states and 50949 transitions. [2022-03-01 15:40:23,302 INFO L78 Accepts]: Start accepts. Automaton has 17655 states and 50949 transitions. Word has length 177 [2022-03-01 15:40:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:23,302 INFO L470 AbstractCegarLoop]: Abstraction has 17655 states and 50949 transitions. [2022-03-01 15:40:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 17655 states and 50949 transitions. [2022-03-01 15:40:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:23,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:23,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:23,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-01 15:40:23,326 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1760133858, now seen corresponding path program 31 times [2022-03-01 15:40:23,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:23,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143094107] [2022-03-01 15:40:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:23,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:23,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:23,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143094107] [2022-03-01 15:40:23,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143094107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:23,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:23,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:40:23,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655084854] [2022-03-01 15:40:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:23,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:40:23,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:40:23,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:40:23,795 INFO L87 Difference]: Start difference. First operand 17655 states and 50949 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:24,936 INFO L93 Difference]: Finished difference Result 24444 states and 70534 transitions. [2022-03-01 15:40:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:40:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:24,980 INFO L225 Difference]: With dead ends: 24444 [2022-03-01 15:40:24,980 INFO L226 Difference]: Without dead ends: 24444 [2022-03-01 15:40:24,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 15:40:24,980 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1218 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:24,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 4296 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:40:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24444 states. [2022-03-01 15:40:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24444 to 16947. [2022-03-01 15:40:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16947 states, 16946 states have (on average 2.878850466186711) internal successors, (48785), 16946 states have internal predecessors, (48785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16947 states to 16947 states and 48785 transitions. [2022-03-01 15:40:25,269 INFO L78 Accepts]: Start accepts. Automaton has 16947 states and 48785 transitions. Word has length 177 [2022-03-01 15:40:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:25,270 INFO L470 AbstractCegarLoop]: Abstraction has 16947 states and 48785 transitions. [2022-03-01 15:40:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16947 states and 48785 transitions. [2022-03-01 15:40:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:25,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:25,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:25,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-01 15:40:25,293 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1139092540, now seen corresponding path program 47 times [2022-03-01 15:40:25,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:25,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582914770] [2022-03-01 15:40:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:25,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:25,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582914770] [2022-03-01 15:40:25,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582914770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:25,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:25,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-01 15:40:25,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135429690] [2022-03-01 15:40:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:25,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 15:40:25,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 15:40:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-03-01 15:40:25,742 INFO L87 Difference]: Start difference. First operand 16947 states and 48785 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:26,812 INFO L93 Difference]: Finished difference Result 23642 states and 68134 transitions. [2022-03-01 15:40:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 15:40:26,813 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:26,855 INFO L225 Difference]: With dead ends: 23642 [2022-03-01 15:40:26,855 INFO L226 Difference]: Without dead ends: 23642 [2022-03-01 15:40:26,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:40:26,856 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1469 mSDsluCounter, 3348 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:26,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 3622 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:40:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23642 states. [2022-03-01 15:40:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23642 to 16923. [2022-03-01 15:40:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16923 states, 16922 states have (on average 2.878087696489777) internal successors, (48703), 16922 states have internal predecessors, (48703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 48703 transitions. [2022-03-01 15:40:27,139 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 48703 transitions. Word has length 177 [2022-03-01 15:40:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:27,139 INFO L470 AbstractCegarLoop]: Abstraction has 16923 states and 48703 transitions. [2022-03-01 15:40:27,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 48703 transitions. [2022-03-01 15:40:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:27,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:27,163 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] [2022-03-01 15:40:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-01 15:40:27,163 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -675517798, now seen corresponding path program 25 times [2022-03-01 15:40:27,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:27,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669509022] [2022-03-01 15:40:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:27,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:27,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669509022] [2022-03-01 15:40:27,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669509022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:27,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:27,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:40:27,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710841757] [2022-03-01 15:40:27,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:27,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:40:27,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:27,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:40:27,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:40:27,631 INFO L87 Difference]: Start difference. First operand 16923 states and 48703 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:28,777 INFO L93 Difference]: Finished difference Result 22490 states and 64614 transitions. [2022-03-01 15:40:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-01 15:40:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:28,816 INFO L225 Difference]: With dead ends: 22490 [2022-03-01 15:40:28,816 INFO L226 Difference]: Without dead ends: 22490 [2022-03-01 15:40:28,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=1426, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 15:40:28,816 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1074 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3931 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:28,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 3931 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:40:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22490 states. [2022-03-01 15:40:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22490 to 15571. [2022-03-01 15:40:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 2.864033397559409) internal successors, (44593), 15570 states have internal predecessors, (44593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 44593 transitions. [2022-03-01 15:40:29,076 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 44593 transitions. Word has length 177 [2022-03-01 15:40:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:29,076 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 44593 transitions. [2022-03-01 15:40:29,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 44593 transitions. [2022-03-01 15:40:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:29,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:29,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:29,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-01 15:40:29,098 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash 120243174, now seen corresponding path program 32 times [2022-03-01 15:40:29,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:29,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142605546] [2022-03-01 15:40:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:29,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:29,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142605546] [2022-03-01 15:40:29,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142605546] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:29,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:29,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 15:40:29,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020238523] [2022-03-01 15:40:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:29,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 15:40:29,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:29,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 15:40:29,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-01 15:40:29,546 INFO L87 Difference]: Start difference. First operand 15571 states and 44593 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:30,782 INFO L93 Difference]: Finished difference Result 23056 states and 66132 transitions. [2022-03-01 15:40:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 15:40:30,783 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:30,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:30,824 INFO L225 Difference]: With dead ends: 23056 [2022-03-01 15:40:30,824 INFO L226 Difference]: Without dead ends: 23056 [2022-03-01 15:40:30,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=482, Invalid=1774, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:40:30,825 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1266 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:30,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 4051 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:40:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23056 states. [2022-03-01 15:40:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23056 to 15563. [2022-03-01 15:40:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 15562 states have (on average 2.8630638735381058) internal successors, (44555), 15562 states have internal predecessors, (44555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 44555 transitions. [2022-03-01 15:40:31,105 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 44555 transitions. Word has length 177 [2022-03-01 15:40:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:31,105 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 44555 transitions. [2022-03-01 15:40:31,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 44555 transitions. [2022-03-01 15:40:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:31,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:31,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:31,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-01 15:40:31,126 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:31,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1809884142, now seen corresponding path program 33 times [2022-03-01 15:40:31,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:31,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132691006] [2022-03-01 15:40:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:31,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:31,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:31,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132691006] [2022-03-01 15:40:31,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132691006] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:40:31,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901933589] [2022-03-01 15:40:31,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:40:31,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:31,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:40:31,591 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:40:31,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 15:40:31,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:40:31,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:40:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:40:31,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:40:31,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:40:32,011 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:40:32,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:40:32,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:40:32,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:40:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:40:32,865 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:40:32,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-01 15:40:33,107 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:40:33,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:40:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:40:33,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:40:33,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:40:33,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-03-01 15:40:33,935 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-01 15:40:33,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 636 treesize of output 556 [2022-03-01 15:40:33,944 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:40:33,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 446 [2022-03-01 15:40:33,952 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:40:33,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 460 [2022-03-01 15:40:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:40:34,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901933589] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:40:34,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:40:34,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 23] total 64 [2022-03-01 15:40:34,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993202171] [2022-03-01 15:40:34,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:40:34,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-01 15:40:34,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-01 15:40:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3714, Unknown=85, NotChecked=0, Total=4032 [2022-03-01 15:40:34,851 INFO L87 Difference]: Start difference. First operand 15563 states and 44555 transitions. Second operand has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:42,381 INFO L93 Difference]: Finished difference Result 43037 states and 123598 transitions. [2022-03-01 15:40:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 15:40:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:42,461 INFO L225 Difference]: With dead ends: 43037 [2022-03-01 15:40:42,462 INFO L226 Difference]: Without dead ends: 43037 [2022-03-01 15:40:42,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 315 SyntacticMatches, 16 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3216, Invalid=13211, Unknown=85, NotChecked=0, Total=16512 [2022-03-01 15:40:42,463 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 4138 mSDsluCounter, 11260 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 11401 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:42,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4138 Valid, 11401 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2778 Invalid, 0 Unknown, 980 Unchecked, 1.1s Time] [2022-03-01 15:40:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43037 states. [2022-03-01 15:40:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43037 to 11995. [2022-03-01 15:40:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11995 states, 11994 states have (on average 2.8294980823745206) internal successors, (33937), 11994 states have internal predecessors, (33937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11995 states to 11995 states and 33937 transitions. [2022-03-01 15:40:42,846 INFO L78 Accepts]: Start accepts. Automaton has 11995 states and 33937 transitions. Word has length 177 [2022-03-01 15:40:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:42,846 INFO L470 AbstractCegarLoop]: Abstraction has 11995 states and 33937 transitions. [2022-03-01 15:40:42,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11995 states and 33937 transitions. [2022-03-01 15:40:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:42,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:42,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:42,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-01 15:40:43,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:43,061 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2081850938, now seen corresponding path program 48 times [2022-03-01 15:40:43,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:43,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278693248] [2022-03-01 15:40:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:43,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:43,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278693248] [2022-03-01 15:40:43,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278693248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:43,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:43,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:40:43,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745429360] [2022-03-01 15:40:43,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:43,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:40:43,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:40:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:40:43,341 INFO L87 Difference]: Start difference. First operand 11995 states and 33937 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:44,140 INFO L93 Difference]: Finished difference Result 27755 states and 79505 transitions. [2022-03-01 15:40:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:40:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:44,192 INFO L225 Difference]: With dead ends: 27755 [2022-03-01 15:40:44,192 INFO L226 Difference]: Without dead ends: 27755 [2022-03-01 15:40:44,192 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 [2022-03-01 15:40:44,192 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 1109 mSDsluCounter, 3843 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:44,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 4176 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:40:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27755 states. [2022-03-01 15:40:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27755 to 12075. [2022-03-01 15:40:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12075 states, 12074 states have (on average 2.830296504886533) internal successors, (34173), 12074 states have internal predecessors, (34173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 34173 transitions. [2022-03-01 15:40:44,457 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 34173 transitions. Word has length 177 [2022-03-01 15:40:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:44,457 INFO L470 AbstractCegarLoop]: Abstraction has 12075 states and 34173 transitions. [2022-03-01 15:40:44,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 34173 transitions. [2022-03-01 15:40:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:44,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:44,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:44,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-03-01 15:40:44,472 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1172680446, now seen corresponding path program 36 times [2022-03-01 15:40:44,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:44,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386416838] [2022-03-01 15:40:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:44,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:44,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:44,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386416838] [2022-03-01 15:40:44,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386416838] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:40:44,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214089492] [2022-03-01 15:40:44,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:40:44,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:44,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:40:44,844 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:40:44,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 15:40:45,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:40:45,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:40:45,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-01 15:40:45,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:40:45,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:40:45,092 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-01 15:40:45,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-01 15:40:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:40:45,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-03-01 15:40:45,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:40:45,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:40:45,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:40:45,875 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:40:45,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-03-01 15:40:46,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:40:46,213 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 6 treesize of output 5 [2022-03-01 15:40:46,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:40:46,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:40:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:46,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:40:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:47,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214089492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:40:47,098 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:40:47,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-01 15:40:47,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720666131] [2022-03-01 15:40:47,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:40:47,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-01 15:40:47,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-01 15:40:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2169, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:40:47,099 INFO L87 Difference]: Start difference. First operand 12075 states and 34173 transitions. Second operand has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:53,630 INFO L93 Difference]: Finished difference Result 40365 states and 116162 transitions. [2022-03-01 15:40:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:40:53,631 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:53,704 INFO L225 Difference]: With dead ends: 40365 [2022-03-01 15:40:53,704 INFO L226 Difference]: Without dead ends: 40365 [2022-03-01 15:40:53,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1978, Invalid=8324, Unknown=0, NotChecked=0, Total=10302 [2022-03-01 15:40:53,705 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 4189 mSDsluCounter, 11071 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4189 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:53,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4189 Valid, 11436 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3073 Invalid, 0 Unknown, 296 Unchecked, 1.5s Time] [2022-03-01 15:40:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40365 states. [2022-03-01 15:40:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40365 to 13747. [2022-03-01 15:40:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.853702895387749) internal successors, (39227), 13746 states have internal predecessors, (39227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 39227 transitions. [2022-03-01 15:40:54,070 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 39227 transitions. Word has length 177 [2022-03-01 15:40:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:54,070 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 39227 transitions. [2022-03-01 15:40:54,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 39227 transitions. [2022-03-01 15:40:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:54,088 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:54,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:54,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-01 15:40:54,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:54,288 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1485350192, now seen corresponding path program 37 times [2022-03-01 15:40:54,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:54,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038385644] [2022-03-01 15:40:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:54,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:54,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:54,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038385644] [2022-03-01 15:40:54,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038385644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:54,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:54,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:40:54,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161495063] [2022-03-01 15:40:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:54,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:40:54,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:40:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:40:54,633 INFO L87 Difference]: Start difference. First operand 13747 states and 39227 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:55,327 INFO L93 Difference]: Finished difference Result 26588 states and 76366 transitions. [2022-03-01 15:40:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:40:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:55,374 INFO L225 Difference]: With dead ends: 26588 [2022-03-01 15:40:55,375 INFO L226 Difference]: Without dead ends: 26588 [2022-03-01 15:40:55,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:40:55,375 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1222 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:55,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3695 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:40:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26588 states. [2022-03-01 15:40:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26588 to 13779. [2022-03-01 15:40:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.855203948323414) internal successors, (39339), 13778 states have internal predecessors, (39339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 39339 transitions. [2022-03-01 15:40:55,640 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 39339 transitions. Word has length 177 [2022-03-01 15:40:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:55,640 INFO L470 AbstractCegarLoop]: Abstraction has 13779 states and 39339 transitions. [2022-03-01 15:40:55,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 39339 transitions. [2022-03-01 15:40:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:55,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:55,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:55,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-03-01 15:40:55,658 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1756783830, now seen corresponding path program 49 times [2022-03-01 15:40:55,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:55,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329382165] [2022-03-01 15:40:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:55,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:55,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:55,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329382165] [2022-03-01 15:40:55,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329382165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:55,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:55,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:40:55,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384160787] [2022-03-01 15:40:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:55,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:40:55,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:40:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:40:55,993 INFO L87 Difference]: Start difference. First operand 13779 states and 39339 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:56,659 INFO L93 Difference]: Finished difference Result 26686 states and 76646 transitions. [2022-03-01 15:40:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:40:56,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:56,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:56,707 INFO L225 Difference]: With dead ends: 26686 [2022-03-01 15:40:56,707 INFO L226 Difference]: Without dead ends: 26686 [2022-03-01 15:40:56,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:40:56,707 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1087 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:56,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 3365 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:40:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2022-03-01 15:40:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 13795. [2022-03-01 15:40:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 2.855081919675221) internal successors, (39383), 13794 states have internal predecessors, (39383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 39383 transitions. [2022-03-01 15:40:56,963 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 39383 transitions. Word has length 177 [2022-03-01 15:40:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:56,963 INFO L470 AbstractCegarLoop]: Abstraction has 13795 states and 39383 transitions. [2022-03-01 15:40:56,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 39383 transitions. [2022-03-01 15:40:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:56,982 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:56,982 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] [2022-03-01 15:40:56,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-03-01 15:40:56,982 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:56,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1484252432, now seen corresponding path program 50 times [2022-03-01 15:40:56,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:56,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594431242] [2022-03-01 15:40:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:56,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:57,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:57,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594431242] [2022-03-01 15:40:57,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594431242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:57,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:57,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:40:57,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303610763] [2022-03-01 15:40:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:57,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:40:57,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:40:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:40:57,383 INFO L87 Difference]: Start difference. First operand 13795 states and 39383 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:58,196 INFO L93 Difference]: Finished difference Result 27032 states and 77634 transitions. [2022-03-01 15:40:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:40:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:58,242 INFO L225 Difference]: With dead ends: 27032 [2022-03-01 15:40:58,243 INFO L226 Difference]: Without dead ends: 27032 [2022-03-01 15:40:58,243 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 [2022-03-01 15:40:58,243 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1252 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:58,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 3920 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:40:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2022-03-01 15:40:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 13795. [2022-03-01 15:40:58,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 2.855081919675221) internal successors, (39383), 13794 states have internal predecessors, (39383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 39383 transitions. [2022-03-01 15:40:58,517 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 39383 transitions. Word has length 177 [2022-03-01 15:40:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:58,518 INFO L470 AbstractCegarLoop]: Abstraction has 13795 states and 39383 transitions. [2022-03-01 15:40:58,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 39383 transitions. [2022-03-01 15:40:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:58,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:58,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:58,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-03-01 15:40:58,537 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1947827174, now seen corresponding path program 26 times [2022-03-01 15:40:58,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:58,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829052216] [2022-03-01 15:40:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:40:58,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:58,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829052216] [2022-03-01 15:40:58,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829052216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:58,863 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:58,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:40:58,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778900541] [2022-03-01 15:40:58,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:58,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:40:58,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:40:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:40:58,864 INFO L87 Difference]: Start difference. First operand 13795 states and 39383 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:59,477 INFO L93 Difference]: Finished difference Result 26928 states and 77340 transitions. [2022-03-01 15:40:59,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:40:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:40:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:59,528 INFO L225 Difference]: With dead ends: 26928 [2022-03-01 15:40:59,528 INFO L226 Difference]: Without dead ends: 26928 [2022-03-01 15:40:59,528 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 [2022-03-01 15:40:59,529 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1064 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:59,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 2716 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:40:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2022-03-01 15:40:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 13787. [2022-03-01 15:40:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13786 states have (on average 2.853982300884956) internal successors, (39345), 13786 states have internal predecessors, (39345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 39345 transitions. [2022-03-01 15:40:59,805 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 39345 transitions. Word has length 177 [2022-03-01 15:40:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:59,805 INFO L470 AbstractCegarLoop]: Abstraction has 13787 states and 39345 transitions. [2022-03-01 15:40:59,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 39345 transitions. [2022-03-01 15:40:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:40:59,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:59,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:59,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-03-01 15:40:59,824 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:59,824 INFO L85 PathProgramCache]: Analyzing trace with hash -150426422, now seen corresponding path program 51 times [2022-03-01 15:40:59,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:59,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125286758] [2022-03-01 15:40:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:00,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:00,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125286758] [2022-03-01 15:41:00,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125286758] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:00,201 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:00,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:00,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846937127] [2022-03-01 15:41:00,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:00,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:00,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:00,202 INFO L87 Difference]: Start difference. First operand 13787 states and 39345 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:00,999 INFO L93 Difference]: Finished difference Result 27424 states and 78736 transitions. [2022-03-01 15:41:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:01,053 INFO L225 Difference]: With dead ends: 27424 [2022-03-01 15:41:01,053 INFO L226 Difference]: Without dead ends: 27424 [2022-03-01 15:41:01,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:41:01,054 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1177 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:01,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 4173 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27424 states. [2022-03-01 15:41:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27424 to 13771. [2022-03-01 15:41:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13771 states, 13770 states have (on average 2.8541031227305735) internal successors, (39301), 13770 states have internal predecessors, (39301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13771 states to 13771 states and 39301 transitions. [2022-03-01 15:41:01,343 INFO L78 Accepts]: Start accepts. Automaton has 13771 states and 39301 transitions. Word has length 177 [2022-03-01 15:41:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:01,344 INFO L470 AbstractCegarLoop]: Abstraction has 13771 states and 39301 transitions. [2022-03-01 15:41:01,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13771 states and 39301 transitions. [2022-03-01 15:41:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:01,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:01,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:01,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-03-01 15:41:01,362 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 144455970, now seen corresponding path program 27 times [2022-03-01 15:41:01,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:01,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580345332] [2022-03-01 15:41:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:01,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:01,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:01,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580345332] [2022-03-01 15:41:01,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580345332] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:01,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:01,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:01,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010856668] [2022-03-01 15:41:01,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:01,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:01,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:01,726 INFO L87 Difference]: Start difference. First operand 13771 states and 39301 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:02,413 INFO L93 Difference]: Finished difference Result 26992 states and 77516 transitions. [2022-03-01 15:41:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:02,462 INFO L225 Difference]: With dead ends: 26992 [2022-03-01 15:41:02,462 INFO L226 Difference]: Without dead ends: 26992 [2022-03-01 15:41:02,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:41:02,463 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1150 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:02,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 3160 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26992 states. [2022-03-01 15:41:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26992 to 13787. [2022-03-01 15:41:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13786 states have (on average 2.853982300884956) internal successors, (39345), 13786 states have internal predecessors, (39345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 39345 transitions. [2022-03-01 15:41:02,748 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 39345 transitions. Word has length 177 [2022-03-01 15:41:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:02,748 INFO L470 AbstractCegarLoop]: Abstraction has 13787 states and 39345 transitions. [2022-03-01 15:41:02,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 39345 transitions. [2022-03-01 15:41:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:02,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:02,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:02,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-03-01 15:41:02,767 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1949907452, now seen corresponding path program 28 times [2022-03-01 15:41:02,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:02,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263707187] [2022-03-01 15:41:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:02,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:03,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:03,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263707187] [2022-03-01 15:41:03,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263707187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:03,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:03,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:03,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164822048] [2022-03-01 15:41:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:03,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:03,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:03,096 INFO L87 Difference]: Start difference. First operand 13787 states and 39345 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:03,811 INFO L93 Difference]: Finished difference Result 27856 states and 79988 transitions. [2022-03-01 15:41:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:41:03,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:03,863 INFO L225 Difference]: With dead ends: 27856 [2022-03-01 15:41:03,863 INFO L226 Difference]: Without dead ends: 27856 [2022-03-01 15:41:03,863 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 [2022-03-01 15:41:03,863 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 1354 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:03,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 3217 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-01 15:41:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 13731. [2022-03-01 15:41:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13731 states, 13730 states have (on average 2.8526584122359795) internal successors, (39167), 13730 states have internal predecessors, (39167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13731 states to 13731 states and 39167 transitions. [2022-03-01 15:41:04,225 INFO L78 Accepts]: Start accepts. Automaton has 13731 states and 39167 transitions. Word has length 177 [2022-03-01 15:41:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:04,225 INFO L470 AbstractCegarLoop]: Abstraction has 13731 states and 39167 transitions. [2022-03-01 15:41:04,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 13731 states and 39167 transitions. [2022-03-01 15:41:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:04,244 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:04,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:04,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-03-01 15:41:04,244 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1878945178, now seen corresponding path program 38 times [2022-03-01 15:41:04,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:04,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45556610] [2022-03-01 15:41:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:04,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:04,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45556610] [2022-03-01 15:41:04,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45556610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:04,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:04,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:04,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384567512] [2022-03-01 15:41:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:04,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:04,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:04,597 INFO L87 Difference]: Start difference. First operand 13731 states and 39167 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:05,316 INFO L93 Difference]: Finished difference Result 27238 states and 78360 transitions. [2022-03-01 15:41:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:05,373 INFO L225 Difference]: With dead ends: 27238 [2022-03-01 15:41:05,373 INFO L226 Difference]: Without dead ends: 27238 [2022-03-01 15:41:05,373 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 [2022-03-01 15:41:05,373 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1564 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:05,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 3162 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2022-03-01 15:41:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 13747. [2022-03-01 15:41:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.8531209079004802) internal successors, (39219), 13746 states have internal predecessors, (39219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 39219 transitions. [2022-03-01 15:41:05,674 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 39219 transitions. Word has length 177 [2022-03-01 15:41:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:05,674 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 39219 transitions. [2022-03-01 15:41:05,674 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) [2022-03-01 15:41:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 39219 transitions. [2022-03-01 15:41:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:05,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:05,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:05,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-03-01 15:41:05,694 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:05,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash -220399678, now seen corresponding path program 52 times [2022-03-01 15:41:05,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:05,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295708900] [2022-03-01 15:41:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:05,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:06,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:06,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295708900] [2022-03-01 15:41:06,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295708900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:06,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:06,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:06,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713208369] [2022-03-01 15:41:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:06,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:06,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:06,106 INFO L87 Difference]: Start difference. First operand 13747 states and 39219 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:06,833 INFO L93 Difference]: Finished difference Result 27028 states and 77678 transitions. [2022-03-01 15:41:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:06,834 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:06,890 INFO L225 Difference]: With dead ends: 27028 [2022-03-01 15:41:06,890 INFO L226 Difference]: Without dead ends: 27028 [2022-03-01 15:41:06,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:41:06,891 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 926 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:06,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 2999 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2022-03-01 15:41:07,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 13779. [2022-03-01 15:41:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.8528814051386266) internal successors, (39307), 13778 states have internal predecessors, (39307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 39307 transitions. [2022-03-01 15:41:07,204 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 39307 transitions. Word has length 177 [2022-03-01 15:41:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:07,205 INFO L470 AbstractCegarLoop]: Abstraction has 13779 states and 39307 transitions. [2022-03-01 15:41:07,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 39307 transitions. [2022-03-01 15:41:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:07,226 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:07,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:07,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-03-01 15:41:07,226 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash 186274222, now seen corresponding path program 53 times [2022-03-01 15:41:07,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:07,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080878197] [2022-03-01 15:41:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:07,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:07,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080878197] [2022-03-01 15:41:07,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080878197] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:07,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860113946] [2022-03-01 15:41:07,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:41:07,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:07,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:07,568 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:07,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 15:41:07,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:41:07,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:07,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-01 15:41:07,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:07,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:07,830 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 15:41:07,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-01 15:41:07,961 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-03-01 15:41:07,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2022-03-01 15:41:08,290 INFO L353 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-03-01 15:41:08,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2022-03-01 15:41:08,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:41:08,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:08,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:09,354 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:41:09,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2022-03-01 15:41:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:09,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:09,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860113946] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:09,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:41:09,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 27] total 55 [2022-03-01 15:41:09,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756842971] [2022-03-01 15:41:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:09,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 15:41:09,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 15:41:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2658, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 15:41:09,950 INFO L87 Difference]: Start difference. First operand 13779 states and 39307 transitions. Second operand has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:11,232 INFO L93 Difference]: Finished difference Result 39084 states and 112450 transitions. [2022-03-01 15:41:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:41:11,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:11,309 INFO L225 Difference]: With dead ends: 39084 [2022-03-01 15:41:11,309 INFO L226 Difference]: Without dead ends: 39084 [2022-03-01 15:41:11,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=597, Invalid=4805, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 15:41:11,310 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 863 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:11,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 3579 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:41:11,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39084 states. [2022-03-01 15:41:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39084 to 15389. [2022-03-01 15:41:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 15388 states have (on average 2.8659344944112295) internal successors, (44101), 15388 states have internal predecessors, (44101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 44101 transitions. [2022-03-01 15:41:11,880 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 44101 transitions. Word has length 177 [2022-03-01 15:41:11,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:11,880 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 44101 transitions. [2022-03-01 15:41:11,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 44101 transitions. [2022-03-01 15:41:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:11,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:11,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:11,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:12,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-03-01 15:41:12,100 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 548390286, now seen corresponding path program 34 times [2022-03-01 15:41:12,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:12,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451594713] [2022-03-01 15:41:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:12,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:12,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451594713] [2022-03-01 15:41:12,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451594713] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:12,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46744494] [2022-03-01 15:41:12,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:41:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:12,415 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:12,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-01 15:41:12,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:41:12,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:12,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-01 15:41:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:13,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:41:13,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:13,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:13,545 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-01 15:41:13,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:41:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:13,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:15,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46744494] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:15,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:15,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 43 [2022-03-01 15:41:15,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054880922] [2022-03-01 15:41:15,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:15,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-01 15:41:15,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-01 15:41:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1612, Unknown=2, NotChecked=0, Total=1806 [2022-03-01 15:41:15,371 INFO L87 Difference]: Start difference. First operand 15389 states and 44101 transitions. Second operand has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:17,742 INFO L93 Difference]: Finished difference Result 31455 states and 90653 transitions. [2022-03-01 15:41:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:41:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:17,804 INFO L225 Difference]: With dead ends: 31455 [2022-03-01 15:41:17,805 INFO L226 Difference]: Without dead ends: 31455 [2022-03-01 15:41:17,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1559, Invalid=5579, Unknown=2, NotChecked=0, Total=7140 [2022-03-01 15:41:17,806 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 1782 mSDsluCounter, 6031 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:17,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 6353 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1748 Invalid, 0 Unknown, 399 Unchecked, 0.7s Time] [2022-03-01 15:41:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31455 states. [2022-03-01 15:41:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31455 to 15357. [2022-03-01 15:41:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15357 states, 15356 states have (on average 2.8661760875227924) internal successors, (44013), 15356 states have internal predecessors, (44013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15357 states to 15357 states and 44013 transitions. [2022-03-01 15:41:18,141 INFO L78 Accepts]: Start accepts. Automaton has 15357 states and 44013 transitions. Word has length 177 [2022-03-01 15:41:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:18,142 INFO L470 AbstractCegarLoop]: Abstraction has 15357 states and 44013 transitions. [2022-03-01 15:41:18,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 15357 states and 44013 transitions. [2022-03-01 15:41:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:18,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:18,162 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] [2022-03-01 15:41:18,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:18,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:18,363 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:18,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash -577479552, now seen corresponding path program 39 times [2022-03-01 15:41:18,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:18,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318492028] [2022-03-01 15:41:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:18,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:18,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318492028] [2022-03-01 15:41:18,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318492028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:18,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:18,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:18,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903945006] [2022-03-01 15:41:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:18,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:18,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:18,795 INFO L87 Difference]: Start difference. First operand 15357 states and 44013 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:19,444 INFO L93 Difference]: Finished difference Result 28802 states and 82932 transitions. [2022-03-01 15:41:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:41:19,444 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 [2022-03-01 15:41:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:19,496 INFO L225 Difference]: With dead ends: 28802 [2022-03-01 15:41:19,497 INFO L226 Difference]: Without dead ends: 28802 [2022-03-01 15:41:19,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:41:19,497 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1255 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:19,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 2957 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28802 states. [2022-03-01 15:41:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28802 to 15373. [2022-03-01 15:41:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 15372 states have (on average 2.867096018735363) internal successors, (44073), 15372 states have internal predecessors, (44073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 44073 transitions. [2022-03-01 15:41:19,790 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 44073 transitions. Word has length 177 [2022-03-01 15:41:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:19,790 INFO L470 AbstractCegarLoop]: Abstraction has 15373 states and 44073 transitions. [2022-03-01 15:41:19,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 44073 transitions. [2022-03-01 15:41:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:19,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:19,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:19,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-03-01 15:41:19,811 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:19,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1630312826, now seen corresponding path program 54 times [2022-03-01 15:41:19,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:19,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932955311] [2022-03-01 15:41:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:20,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:20,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932955311] [2022-03-01 15:41:20,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932955311] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:20,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:20,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:20,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690388499] [2022-03-01 15:41:20,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:20,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:20,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:20,153 INFO L87 Difference]: Start difference. First operand 15373 states and 44073 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:20,842 INFO L93 Difference]: Finished difference Result 28758 states and 82818 transitions. [2022-03-01 15:41:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:41:20,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:20,898 INFO L225 Difference]: With dead ends: 28758 [2022-03-01 15:41:20,898 INFO L226 Difference]: Without dead ends: 28758 [2022-03-01 15:41:20,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:41:20,899 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1191 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:20,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 2784 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28758 states. [2022-03-01 15:41:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28758 to 15381. [2022-03-01 15:41:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 15380 states have (on average 2.86703511053316) internal successors, (44095), 15380 states have internal predecessors, (44095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 44095 transitions. [2022-03-01 15:41:21,289 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 44095 transitions. Word has length 177 [2022-03-01 15:41:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:21,290 INFO L470 AbstractCegarLoop]: Abstraction has 15381 states and 44095 transitions. [2022-03-01 15:41:21,290 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) [2022-03-01 15:41:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 44095 transitions. [2022-03-01 15:41:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:21,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:21,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:21,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-03-01 15:41:21,311 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1902844224, now seen corresponding path program 55 times [2022-03-01 15:41:21,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:21,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876287264] [2022-03-01 15:41:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:21,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:21,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876287264] [2022-03-01 15:41:21,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876287264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:21,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:21,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:21,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096656389] [2022-03-01 15:41:21,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:21,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:21,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:21,651 INFO L87 Difference]: Start difference. First operand 15381 states and 44095 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:22,374 INFO L93 Difference]: Finished difference Result 29064 states and 83696 transitions. [2022-03-01 15:41:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:41:22,375 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:22,427 INFO L225 Difference]: With dead ends: 29064 [2022-03-01 15:41:22,427 INFO L226 Difference]: Without dead ends: 29064 [2022-03-01 15:41:22,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:41:22,427 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 908 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:22,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 3833 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29064 states. [2022-03-01 15:41:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29064 to 15373. [2022-03-01 15:41:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 15372 states have (on average 2.867096018735363) internal successors, (44073), 15372 states have internal predecessors, (44073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 44073 transitions. [2022-03-01 15:41:22,728 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 44073 transitions. Word has length 177 [2022-03-01 15:41:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:22,728 INFO L470 AbstractCegarLoop]: Abstraction has 15373 states and 44073 transitions. [2022-03-01 15:41:22,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 44073 transitions. [2022-03-01 15:41:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:22,749 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:22,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:22,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-03-01 15:41:22,749 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1439269482, now seen corresponding path program 29 times [2022-03-01 15:41:22,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:22,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940019568] [2022-03-01 15:41:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:22,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:23,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:23,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940019568] [2022-03-01 15:41:23,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940019568] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:23,079 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:23,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:23,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523627995] [2022-03-01 15:41:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:23,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:23,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:23,080 INFO L87 Difference]: Start difference. First operand 15373 states and 44073 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:23,708 INFO L93 Difference]: Finished difference Result 28960 states and 83402 transitions. [2022-03-01 15:41:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:41:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:23,762 INFO L225 Difference]: With dead ends: 28960 [2022-03-01 15:41:23,762 INFO L226 Difference]: Without dead ends: 28960 [2022-03-01 15:41:23,762 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 [2022-03-01 15:41:23,762 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 975 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:23,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 3128 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28960 states. [2022-03-01 15:41:24,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28960 to 15349. [2022-03-01 15:41:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15349 states, 15348 states have (on average 2.865715402658327) internal successors, (43983), 15348 states have internal predecessors, (43983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15349 states to 15349 states and 43983 transitions. [2022-03-01 15:41:24,062 INFO L78 Accepts]: Start accepts. Automaton has 15349 states and 43983 transitions. Word has length 177 [2022-03-01 15:41:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:24,062 INFO L470 AbstractCegarLoop]: Abstraction has 15349 states and 43983 transitions. [2022-03-01 15:41:24,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15349 states and 43983 transitions. [2022-03-01 15:41:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:24,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:24,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:24,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-03-01 15:41:24,083 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2041566512, now seen corresponding path program 40 times [2022-03-01 15:41:24,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:24,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095030237] [2022-03-01 15:41:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:24,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:24,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:24,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095030237] [2022-03-01 15:41:24,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095030237] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:24,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:24,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:24,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052585557] [2022-03-01 15:41:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:24,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:24,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:24,429 INFO L87 Difference]: Start difference. First operand 15349 states and 43983 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:25,101 INFO L93 Difference]: Finished difference Result 28786 states and 82856 transitions. [2022-03-01 15:41:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:41:25,101 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:25,156 INFO L225 Difference]: With dead ends: 28786 [2022-03-01 15:41:25,156 INFO L226 Difference]: Without dead ends: 28786 [2022-03-01 15:41:25,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:41:25,156 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 890 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:25,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2996 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28786 states. [2022-03-01 15:41:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28786 to 15381. [2022-03-01 15:41:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 15380 states have (on average 2.86703511053316) internal successors, (44095), 15380 states have internal predecessors, (44095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 44095 transitions. [2022-03-01 15:41:25,458 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 44095 transitions. Word has length 177 [2022-03-01 15:41:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:25,458 INFO L470 AbstractCegarLoop]: Abstraction has 15381 states and 44095 transitions. [2022-03-01 15:41:25,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 44095 transitions. [2022-03-01 15:41:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:25,479 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:25,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:25,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-03-01 15:41:25,479 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:25,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 988733238, now seen corresponding path program 56 times [2022-03-01 15:41:25,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:25,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153415838] [2022-03-01 15:41:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:25,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:25,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:25,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153415838] [2022-03-01 15:41:25,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153415838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:25,820 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:25,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:25,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907045173] [2022-03-01 15:41:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:25,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:25,821 INFO L87 Difference]: Start difference. First operand 15381 states and 44095 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:26,580 INFO L93 Difference]: Finished difference Result 28750 states and 82764 transitions. [2022-03-01 15:41:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:41:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:26,639 INFO L225 Difference]: With dead ends: 28750 [2022-03-01 15:41:26,639 INFO L226 Difference]: Without dead ends: 28750 [2022-03-01 15:41:26,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:41:26,640 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1207 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 3638 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:26,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 3638 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28750 states. [2022-03-01 15:41:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28750 to 15397. [2022-03-01 15:41:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15397 states, 15396 states have (on average 2.8669134840218238) internal successors, (44139), 15396 states have internal predecessors, (44139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 44139 transitions. [2022-03-01 15:41:27,022 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 44139 transitions. Word has length 177 [2022-03-01 15:41:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:27,022 INFO L470 AbstractCegarLoop]: Abstraction has 15397 states and 44139 transitions. [2022-03-01 15:41:27,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:27,022 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 44139 transitions. [2022-03-01 15:41:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:27,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:27,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:27,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-03-01 15:41:27,043 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 716201840, now seen corresponding path program 57 times [2022-03-01 15:41:27,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:27,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439500720] [2022-03-01 15:41:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:27,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:27,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439500720] [2022-03-01 15:41:27,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439500720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:27,387 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:27,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:27,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876561688] [2022-03-01 15:41:27,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:27,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:27,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:27,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:27,388 INFO L87 Difference]: Start difference. First operand 15397 states and 44139 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:28,093 INFO L93 Difference]: Finished difference Result 29072 states and 83686 transitions. [2022-03-01 15:41:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:41:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:28,146 INFO L225 Difference]: With dead ends: 29072 [2022-03-01 15:41:28,147 INFO L226 Difference]: Without dead ends: 29072 [2022-03-01 15:41:28,147 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 [2022-03-01 15:41:28,147 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 952 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:28,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 3459 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29072 states. [2022-03-01 15:41:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29072 to 15397. [2022-03-01 15:41:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15397 states, 15396 states have (on average 2.8669134840218238) internal successors, (44139), 15396 states have internal predecessors, (44139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 44139 transitions. [2022-03-01 15:41:28,463 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 44139 transitions. Word has length 177 [2022-03-01 15:41:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:28,463 INFO L470 AbstractCegarLoop]: Abstraction has 15397 states and 44139 transitions. [2022-03-01 15:41:28,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 44139 transitions. [2022-03-01 15:41:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:28,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:28,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:28,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-03-01 15:41:28,486 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1179776582, now seen corresponding path program 30 times [2022-03-01 15:41:28,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:28,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948091409] [2022-03-01 15:41:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:28,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:28,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:28,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948091409] [2022-03-01 15:41:28,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948091409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:28,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:28,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:28,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960837991] [2022-03-01 15:41:28,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:28,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:28,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:28,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:28,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:28,818 INFO L87 Difference]: Start difference. First operand 15397 states and 44139 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:29,536 INFO L93 Difference]: Finished difference Result 28976 states and 83414 transitions. [2022-03-01 15:41:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:41:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:29,590 INFO L225 Difference]: With dead ends: 28976 [2022-03-01 15:41:29,590 INFO L226 Difference]: Without dead ends: 28976 [2022-03-01 15:41:29,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:41:29,591 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1222 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:29,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3452 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28976 states. [2022-03-01 15:41:29,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28976 to 15389. [2022-03-01 15:41:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 15388 states have (on average 2.8659344944112295) internal successors, (44101), 15388 states have internal predecessors, (44101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 44101 transitions. [2022-03-01 15:41:29,891 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 44101 transitions. Word has length 177 [2022-03-01 15:41:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:29,891 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 44101 transitions. [2022-03-01 15:41:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 44101 transitions. [2022-03-01 15:41:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:29,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:29,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:29,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-03-01 15:41:29,913 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -918477014, now seen corresponding path program 58 times [2022-03-01 15:41:29,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:29,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107578355] [2022-03-01 15:41:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:30,256 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:30,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107578355] [2022-03-01 15:41:30,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107578355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:30,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:30,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:30,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659606819] [2022-03-01 15:41:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:30,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:30,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:30,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:30,257 INFO L87 Difference]: Start difference. First operand 15389 states and 44101 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:30,945 INFO L93 Difference]: Finished difference Result 29408 states and 84618 transitions. [2022-03-01 15:41:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:30,945 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:31,001 INFO L225 Difference]: With dead ends: 29408 [2022-03-01 15:41:31,001 INFO L226 Difference]: Without dead ends: 29408 [2022-03-01 15:41:31,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:41:31,002 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1002 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:31,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 3214 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2022-03-01 15:41:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 15373. [2022-03-01 15:41:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 15372 states have (on average 2.866055165235493) internal successors, (44057), 15372 states have internal predecessors, (44057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 44057 transitions. [2022-03-01 15:41:31,322 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 44057 transitions. Word has length 177 [2022-03-01 15:41:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:31,322 INFO L470 AbstractCegarLoop]: Abstraction has 15373 states and 44057 transitions. [2022-03-01 15:41:31,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 44057 transitions. [2022-03-01 15:41:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:31,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:31,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:31,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-03-01 15:41:31,342 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash -623594622, now seen corresponding path program 31 times [2022-03-01 15:41:31,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:31,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286328316] [2022-03-01 15:41:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:31,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:31,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286328316] [2022-03-01 15:41:31,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286328316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:31,734 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:31,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:31,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167589961] [2022-03-01 15:41:31,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:31,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:31,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:31,735 INFO L87 Difference]: Start difference. First operand 15373 states and 44057 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:32,509 INFO L93 Difference]: Finished difference Result 28984 states and 83420 transitions. [2022-03-01 15:41:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:32,564 INFO L225 Difference]: With dead ends: 28984 [2022-03-01 15:41:32,565 INFO L226 Difference]: Without dead ends: 28984 [2022-03-01 15:41:32,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:41:32,565 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1235 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:32,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 3616 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28984 states. [2022-03-01 15:41:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28984 to 15389. [2022-03-01 15:41:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 15388 states have (on average 2.8659344944112295) internal successors, (44101), 15388 states have internal predecessors, (44101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 44101 transitions. [2022-03-01 15:41:32,913 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 44101 transitions. Word has length 177 [2022-03-01 15:41:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:32,914 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 44101 transitions. [2022-03-01 15:41:32,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 44101 transitions. [2022-03-01 15:41:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:32,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:32,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:32,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-03-01 15:41:32,934 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1577009252, now seen corresponding path program 32 times [2022-03-01 15:41:32,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:32,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665822855] [2022-03-01 15:41:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:33,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:33,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665822855] [2022-03-01 15:41:33,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665822855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:33,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:33,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:33,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751452452] [2022-03-01 15:41:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:33,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:33,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:33,247 INFO L87 Difference]: Start difference. First operand 15389 states and 44101 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:34,025 INFO L93 Difference]: Finished difference Result 29848 states and 85892 transitions. [2022-03-01 15:41:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:41:34,025 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:34,083 INFO L225 Difference]: With dead ends: 29848 [2022-03-01 15:41:34,083 INFO L226 Difference]: Without dead ends: 29848 [2022-03-01 15:41:34,084 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 [2022-03-01 15:41:34,084 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1196 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:34,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3744 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29848 states. [2022-03-01 15:41:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29848 to 15325. [2022-03-01 15:41:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15325 states, 15324 states have (on average 2.865896632732968) internal successors, (43917), 15324 states have internal predecessors, (43917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 43917 transitions. [2022-03-01 15:41:34,389 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 43917 transitions. Word has length 177 [2022-03-01 15:41:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:34,389 INFO L470 AbstractCegarLoop]: Abstraction has 15325 states and 43917 transitions. [2022-03-01 15:41:34,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 43917 transitions. [2022-03-01 15:41:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:34,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:34,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:34,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-03-01 15:41:34,411 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2110443726, now seen corresponding path program 41 times [2022-03-01 15:41:34,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:34,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383186704] [2022-03-01 15:41:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:34,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:34,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:34,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383186704] [2022-03-01 15:41:34,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383186704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:34,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:34,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:34,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867875885] [2022-03-01 15:41:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:34,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:34,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:34,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:34,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:34,820 INFO L87 Difference]: Start difference. First operand 15325 states and 43917 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:35,662 INFO L93 Difference]: Finished difference Result 28170 states and 80948 transitions. [2022-03-01 15:41:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:41:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:35,717 INFO L225 Difference]: With dead ends: 28170 [2022-03-01 15:41:35,717 INFO L226 Difference]: Without dead ends: 28170 [2022-03-01 15:41:35,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 15:41:35,718 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1035 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:35,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 4312 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:35,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28170 states. [2022-03-01 15:41:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28170 to 15277. [2022-03-01 15:41:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15277 states, 15276 states have (on average 2.8662608012568733) internal successors, (43785), 15276 states have internal predecessors, (43785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15277 states to 15277 states and 43785 transitions. [2022-03-01 15:41:36,027 INFO L78 Accepts]: Start accepts. Automaton has 15277 states and 43785 transitions. Word has length 177 [2022-03-01 15:41:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:36,028 INFO L470 AbstractCegarLoop]: Abstraction has 15277 states and 43785 transitions. [2022-03-01 15:41:36,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 15277 states and 43785 transitions. [2022-03-01 15:41:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:36,048 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:36,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:36,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-03-01 15:41:36,049 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1312300756, now seen corresponding path program 42 times [2022-03-01 15:41:36,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:36,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678821173] [2022-03-01 15:41:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:36,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:36,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678821173] [2022-03-01 15:41:36,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678821173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:36,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:36,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:36,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5634127] [2022-03-01 15:41:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:36,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:36,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:36,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:36,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:36,414 INFO L87 Difference]: Start difference. First operand 15277 states and 43785 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:37,153 INFO L93 Difference]: Finished difference Result 28558 states and 82212 transitions. [2022-03-01 15:41:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:37,154 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:37,207 INFO L225 Difference]: With dead ends: 28558 [2022-03-01 15:41:37,208 INFO L226 Difference]: Without dead ends: 28558 [2022-03-01 15:41:37,208 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 [2022-03-01 15:41:37,208 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1471 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:37,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 3601 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2022-03-01 15:41:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 15285. [2022-03-01 15:41:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15285 states, 15284 states have (on average 2.8667233708453286) internal successors, (43815), 15284 states have internal predecessors, (43815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15285 states to 15285 states and 43815 transitions. [2022-03-01 15:41:37,508 INFO L78 Accepts]: Start accepts. Automaton has 15285 states and 43815 transitions. Word has length 177 [2022-03-01 15:41:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 15285 states and 43815 transitions. [2022-03-01 15:41:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15285 states and 43815 transitions. [2022-03-01 15:41:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:37,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:37,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:37,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-03-01 15:41:37,528 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 883321684, now seen corresponding path program 59 times [2022-03-01 15:41:37,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:37,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198075562] [2022-03-01 15:41:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:37,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:37,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198075562] [2022-03-01 15:41:37,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198075562] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:37,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:37,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:37,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35219898] [2022-03-01 15:41:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:37,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:37,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:37,861 INFO L87 Difference]: Start difference. First operand 15285 states and 43815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:38,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:38,655 INFO L93 Difference]: Finished difference Result 28230 states and 81210 transitions. [2022-03-01 15:41:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:41:38,655 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:38,705 INFO L225 Difference]: With dead ends: 28230 [2022-03-01 15:41:38,705 INFO L226 Difference]: Without dead ends: 28230 [2022-03-01 15:41:38,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:41:38,705 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 865 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:38,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 3763 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:38,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28230 states. [2022-03-01 15:41:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28230 to 15317. [2022-03-01 15:41:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15317 states, 15316 states have (on average 2.8664794985635935) internal successors, (43903), 15316 states have internal predecessors, (43903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15317 states to 15317 states and 43903 transitions. [2022-03-01 15:41:38,988 INFO L78 Accepts]: Start accepts. Automaton has 15317 states and 43903 transitions. Word has length 177 [2022-03-01 15:41:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:38,988 INFO L470 AbstractCegarLoop]: Abstraction has 15317 states and 43903 transitions. [2022-03-01 15:41:38,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 15317 states and 43903 transitions. [2022-03-01 15:41:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:39,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:39,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:39,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-03-01 15:41:39,008 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1289995584, now seen corresponding path program 60 times [2022-03-01 15:41:39,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:39,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601087932] [2022-03-01 15:41:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:39,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:39,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601087932] [2022-03-01 15:41:39,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601087932] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:39,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250852824] [2022-03-01 15:41:39,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:41:39,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:39,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:39,322 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:39,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-01 15:41:39,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:41:39,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:39,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-01 15:41:39,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:39,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:39,787 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 [2022-03-01 15:41:40,052 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:41:40,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:41:40,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:41:40,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:40,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:41:40,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2022-03-01 15:41:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:41,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:41,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250852824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:41,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:41,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-01 15:41:41,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071719615] [2022-03-01 15:41:41,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:41,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-01 15:41:41,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-01 15:41:41,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 15:41:41,579 INFO L87 Difference]: Start difference. First operand 15317 states and 43903 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:52,125 INFO L93 Difference]: Finished difference Result 43125 states and 123719 transitions. [2022-03-01 15:41:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 15:41:52,125 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:52,208 INFO L225 Difference]: With dead ends: 43125 [2022-03-01 15:41:52,208 INFO L226 Difference]: Without dead ends: 43125 [2022-03-01 15:41:52,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4062 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=3595, Invalid=14765, Unknown=0, NotChecked=0, Total=18360 [2022-03-01 15:41:52,209 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 4083 mSDsluCounter, 15531 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 15865 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:52,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4083 Valid, 15865 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 5238 Invalid, 0 Unknown, 361 Unchecked, 2.5s Time] [2022-03-01 15:41:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43125 states. [2022-03-01 15:41:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43125 to 15754. [2022-03-01 15:41:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15754 states, 15753 states have (on average 2.8696756173427285) internal successors, (45206), 15753 states have internal predecessors, (45206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15754 states to 15754 states and 45206 transitions. [2022-03-01 15:41:52,622 INFO L78 Accepts]: Start accepts. Automaton has 15754 states and 45206 transitions. Word has length 177 [2022-03-01 15:41:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:52,622 INFO L470 AbstractCegarLoop]: Abstraction has 15754 states and 45206 transitions. [2022-03-01 15:41:52,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 15754 states and 45206 transitions. [2022-03-01 15:41:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:52,643 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:52,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:52,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:52,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-03-01 15:41:52,843 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:52,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 526241810, now seen corresponding path program 43 times [2022-03-01 15:41:52,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:52,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212633400] [2022-03-01 15:41:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:52,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:53,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:53,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212633400] [2022-03-01 15:41:53,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212633400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:53,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:53,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:53,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600418056] [2022-03-01 15:41:53,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:53,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:53,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:53,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:53,176 INFO L87 Difference]: Start difference. First operand 15754 states and 45206 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:53,855 INFO L93 Difference]: Finished difference Result 27286 states and 78202 transitions. [2022-03-01 15:41:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:41:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:53,905 INFO L225 Difference]: With dead ends: 27286 [2022-03-01 15:41:53,905 INFO L226 Difference]: Without dead ends: 27286 [2022-03-01 15:41:53,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:41:53,906 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1028 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:53,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 3487 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:53,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27286 states. [2022-03-01 15:41:54,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27286 to 15770. [2022-03-01 15:41:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15770 states, 15769 states have (on average 2.8705688375927454) internal successors, (45266), 15769 states have internal predecessors, (45266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15770 states to 15770 states and 45266 transitions. [2022-03-01 15:41:54,193 INFO L78 Accepts]: Start accepts. Automaton has 15770 states and 45266 transitions. Word has length 177 [2022-03-01 15:41:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:54,193 INFO L470 AbstractCegarLoop]: Abstraction has 15770 states and 45266 transitions. [2022-03-01 15:41:54,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 15770 states and 45266 transitions. [2022-03-01 15:41:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:54,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:54,216 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] [2022-03-01 15:41:54,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-03-01 15:41:54,216 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1000671752, now seen corresponding path program 35 times [2022-03-01 15:41:54,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:54,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610119693] [2022-03-01 15:41:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:54,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:54,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610119693] [2022-03-01 15:41:54,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610119693] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:54,546 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:54,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:54,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560271287] [2022-03-01 15:41:54,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:54,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:54,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:54,547 INFO L87 Difference]: Start difference. First operand 15770 states and 45266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:55,172 INFO L93 Difference]: Finished difference Result 27258 states and 78140 transitions. [2022-03-01 15:41:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:41:55,172 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:55,220 INFO L225 Difference]: With dead ends: 27258 [2022-03-01 15:41:55,220 INFO L226 Difference]: Without dead ends: 27258 [2022-03-01 15:41:55,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:41:55,221 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1052 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:55,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 2924 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:55,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27258 states. [2022-03-01 15:41:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27258 to 15778. [2022-03-01 15:41:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 15777 states have (on average 2.8705077010838562) internal successors, (45288), 15777 states have internal predecessors, (45288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 45288 transitions. [2022-03-01 15:41:55,504 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 45288 transitions. Word has length 177 [2022-03-01 15:41:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:55,504 INFO L470 AbstractCegarLoop]: Abstraction has 15778 states and 45288 transitions. [2022-03-01 15:41:55,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 45288 transitions. [2022-03-01 15:41:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:55,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:55,525 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] [2022-03-01 15:41:55,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-03-01 15:41:55,525 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash -799122862, now seen corresponding path program 61 times [2022-03-01 15:41:55,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:55,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181309956] [2022-03-01 15:41:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:55,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:55,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:55,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181309956] [2022-03-01 15:41:55,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181309956] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:55,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:55,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:41:55,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364856939] [2022-03-01 15:41:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:55,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:41:55,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:55,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:41:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:41:55,868 INFO L87 Difference]: Start difference. First operand 15778 states and 45288 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:56,545 INFO L93 Difference]: Finished difference Result 27684 states and 79348 transitions. [2022-03-01 15:41:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:41:56,546 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:56,598 INFO L225 Difference]: With dead ends: 27684 [2022-03-01 15:41:56,598 INFO L226 Difference]: Without dead ends: 27684 [2022-03-01 15:41:56,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:41:56,599 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 895 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:56,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 3775 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27684 states. [2022-03-01 15:41:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27684 to 15770. [2022-03-01 15:41:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15770 states, 15769 states have (on average 2.8705688375927454) internal successors, (45266), 15769 states have internal predecessors, (45266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15770 states to 15770 states and 45266 transitions. [2022-03-01 15:41:56,892 INFO L78 Accepts]: Start accepts. Automaton has 15770 states and 45266 transitions. Word has length 177 [2022-03-01 15:41:56,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:56,892 INFO L470 AbstractCegarLoop]: Abstraction has 15770 states and 45266 transitions. [2022-03-01 15:41:56,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 15770 states and 45266 transitions. [2022-03-01 15:41:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:56,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:56,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:56,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-03-01 15:41:56,969 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -335548120, now seen corresponding path program 33 times [2022-03-01 15:41:56,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:56,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304951800] [2022-03-01 15:41:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:56,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:57,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:57,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304951800] [2022-03-01 15:41:57,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304951800] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:57,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:57,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:57,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894624124] [2022-03-01 15:41:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:57,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:57,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:57,296 INFO L87 Difference]: Start difference. First operand 15770 states and 45266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:57,875 INFO L93 Difference]: Finished difference Result 27452 states and 78694 transitions. [2022-03-01 15:41:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:41:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:57,926 INFO L225 Difference]: With dead ends: 27452 [2022-03-01 15:41:57,926 INFO L226 Difference]: Without dead ends: 27452 [2022-03-01 15:41:57,927 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 [2022-03-01 15:41:57,927 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1175 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:57,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 2730 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:41:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27452 states. [2022-03-01 15:41:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27452 to 15778. [2022-03-01 15:41:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 15777 states have (on average 2.8689864993344742) internal successors, (45264), 15777 states have internal predecessors, (45264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 45264 transitions. [2022-03-01 15:41:58,218 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 45264 transitions. Word has length 177 [2022-03-01 15:41:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:58,218 INFO L470 AbstractCegarLoop]: Abstraction has 15778 states and 45264 transitions. [2022-03-01 15:41:58,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 45264 transitions. [2022-03-01 15:41:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:58,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:58,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:58,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-03-01 15:41:58,239 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -827001996, now seen corresponding path program 36 times [2022-03-01 15:41:58,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:58,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512503833] [2022-03-01 15:41:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:58,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:58,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512503833] [2022-03-01 15:41:58,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512503833] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:58,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:58,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:41:58,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131533661] [2022-03-01 15:41:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:58,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:41:58,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:41:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:41:58,560 INFO L87 Difference]: Start difference. First operand 15778 states and 45264 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:59,309 INFO L93 Difference]: Finished difference Result 27218 states and 77998 transitions. [2022-03-01 15:41:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:41:59,309 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:41:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:59,358 INFO L225 Difference]: With dead ends: 27218 [2022-03-01 15:41:59,358 INFO L226 Difference]: Without dead ends: 27218 [2022-03-01 15:41:59,359 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 [2022-03-01 15:41:59,359 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1078 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:59,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 3454 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:41:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27218 states. [2022-03-01 15:41:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27218 to 15842. [2022-03-01 15:41:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15842 states, 15841 states have (on average 2.8685057761504957) internal successors, (45440), 15841 states have internal predecessors, (45440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15842 states to 15842 states and 45440 transitions. [2022-03-01 15:41:59,647 INFO L78 Accepts]: Start accepts. Automaton has 15842 states and 45440 transitions. Word has length 177 [2022-03-01 15:41:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:59,647 INFO L470 AbstractCegarLoop]: Abstraction has 15842 states and 45440 transitions. [2022-03-01 15:41:59,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 15842 states and 45440 transitions. [2022-03-01 15:41:59,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:41:59,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:59,668 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] [2022-03-01 15:41:59,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-03-01 15:41:59,668 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash 415868256, now seen corresponding path program 37 times [2022-03-01 15:41:59,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:59,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942434016] [2022-03-01 15:41:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:59,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:59,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942434016] [2022-03-01 15:41:59,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942434016] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:59,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740750485] [2022-03-01 15:41:59,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:41:59,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:59,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:59,987 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:59,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-01 15:42:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 15:42:00,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:42:00,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:00,363 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-01 15:42:00,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-01 15:42:00,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:42:00,720 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-01 15:42:00,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-01 15:42:00,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:00,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:01,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:01,254 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:42:01,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:42:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:42:01,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:42:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:01,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740750485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:42:01,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:42:01,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-01 15:42:01,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284371054] [2022-03-01 15:42:01,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:42:01,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-01 15:42:01,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-01 15:42:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:42:01,672 INFO L87 Difference]: Start difference. First operand 15842 states and 45440 transitions. Second operand has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:04,464 INFO L93 Difference]: Finished difference Result 31870 states and 91170 transitions. [2022-03-01 15:42:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:42:04,464 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:04,523 INFO L225 Difference]: With dead ends: 31870 [2022-03-01 15:42:04,523 INFO L226 Difference]: Without dead ends: 31870 [2022-03-01 15:42:04,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1655, Invalid=6717, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 15:42:04,524 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 3492 mSDsluCounter, 7336 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3492 SdHoareTripleChecker+Valid, 7633 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:04,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3492 Valid, 7633 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1983 Invalid, 0 Unknown, 442 Unchecked, 0.9s Time] [2022-03-01 15:42:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31870 states. [2022-03-01 15:42:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31870 to 15286. [2022-03-01 15:42:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15286 states, 15285 states have (on average 2.8692181877657834) internal successors, (43856), 15285 states have internal predecessors, (43856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15286 states to 15286 states and 43856 transitions. [2022-03-01 15:42:05,001 INFO L78 Accepts]: Start accepts. Automaton has 15286 states and 43856 transitions. Word has length 177 [2022-03-01 15:42:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:05,001 INFO L470 AbstractCegarLoop]: Abstraction has 15286 states and 43856 transitions. [2022-03-01 15:42:05,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 15286 states and 43856 transitions. [2022-03-01 15:42:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:05,023 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:05,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:05,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-01 15:42:05,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2022-03-01 15:42:05,224 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 462627316, now seen corresponding path program 44 times [2022-03-01 15:42:05,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:05,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355130147] [2022-03-01 15:42:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:05,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:05,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355130147] [2022-03-01 15:42:05,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355130147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:05,555 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:05,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:05,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070032146] [2022-03-01 15:42:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:05,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:05,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:05,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:05,556 INFO L87 Difference]: Start difference. First operand 15286 states and 43856 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:06,336 INFO L93 Difference]: Finished difference Result 27222 states and 78126 transitions. [2022-03-01 15:42:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:42:06,337 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:06,387 INFO L225 Difference]: With dead ends: 27222 [2022-03-01 15:42:06,387 INFO L226 Difference]: Without dead ends: 27222 [2022-03-01 15:42:06,388 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 [2022-03-01 15:42:06,388 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 938 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:06,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 3960 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:42:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27222 states. [2022-03-01 15:42:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27222 to 15262. [2022-03-01 15:42:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15262 states, 15261 states have (on average 2.8694056745953738) internal successors, (43790), 15261 states have internal predecessors, (43790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15262 states to 15262 states and 43790 transitions. [2022-03-01 15:42:06,665 INFO L78 Accepts]: Start accepts. Automaton has 15262 states and 43790 transitions. Word has length 177 [2022-03-01 15:42:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:06,665 INFO L470 AbstractCegarLoop]: Abstraction has 15262 states and 43790 transitions. [2022-03-01 15:42:06,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:06,666 INFO L276 IsEmpty]: Start isEmpty. Operand 15262 states and 43790 transitions. [2022-03-01 15:42:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:06,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:06,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:06,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-03-01 15:42:06,686 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2110797828, now seen corresponding path program 38 times [2022-03-01 15:42:06,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:06,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48190001] [2022-03-01 15:42:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:06,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:07,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:07,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48190001] [2022-03-01 15:42:07,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48190001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:07,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:07,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:07,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20195319] [2022-03-01 15:42:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:07,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:07,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:07,012 INFO L87 Difference]: Start difference. First operand 15262 states and 43790 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:07,692 INFO L93 Difference]: Finished difference Result 26934 states and 77242 transitions. [2022-03-01 15:42:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:42:07,692 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:07,740 INFO L225 Difference]: With dead ends: 26934 [2022-03-01 15:42:07,740 INFO L226 Difference]: Without dead ends: 26934 [2022-03-01 15:42:07,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:42:07,741 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1003 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:07,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 2799 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26934 states. [2022-03-01 15:42:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26934 to 15294. [2022-03-01 15:42:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15294 states, 15293 states have (on average 2.8691558229255216) internal successors, (43878), 15293 states have internal predecessors, (43878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15294 states to 15294 states and 43878 transitions. [2022-03-01 15:42:08,048 INFO L78 Accepts]: Start accepts. Automaton has 15294 states and 43878 transitions. Word has length 177 [2022-03-01 15:42:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:08,048 INFO L470 AbstractCegarLoop]: Abstraction has 15294 states and 43878 transitions. [2022-03-01 15:42:08,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15294 states and 43878 transitions. [2022-03-01 15:42:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:08,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:08,070 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] [2022-03-01 15:42:08,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-03-01 15:42:08,070 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:08,070 INFO L85 PathProgramCache]: Analyzing trace with hash -867927576, now seen corresponding path program 39 times [2022-03-01 15:42:08,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:08,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878525515] [2022-03-01 15:42:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:08,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:08,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878525515] [2022-03-01 15:42:08,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878525515] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:42:08,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394256095] [2022-03-01 15:42:08,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:42:08,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:42:08,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:42:08,483 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:42:08,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-01 15:42:08,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 15:42:08,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:42:08,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-01 15:42:08,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:42:09,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:42:09,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:09,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:09,425 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:42:09,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:42:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:42:09,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:42:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:09,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394256095] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:42:09,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:42:09,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 9] total 42 [2022-03-01 15:42:09,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674128966] [2022-03-01 15:42:09,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:42:09,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 15:42:09,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 15:42:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:42:09,819 INFO L87 Difference]: Start difference. First operand 15294 states and 43878 transitions. Second operand has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:14,272 INFO L93 Difference]: Finished difference Result 43945 states and 124843 transitions. [2022-03-01 15:42:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 15:42:14,272 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:14,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:14,361 INFO L225 Difference]: With dead ends: 43945 [2022-03-01 15:42:14,361 INFO L226 Difference]: Without dead ends: 43945 [2022-03-01 15:42:14,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2153, Invalid=7745, Unknown=2, NotChecked=0, Total=9900 [2022-03-01 15:42:14,363 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 2541 mSDsluCounter, 9463 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 9722 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 489 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:14,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2541 Valid, 9722 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2658 Invalid, 0 Unknown, 489 Unchecked, 1.0s Time] [2022-03-01 15:42:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43945 states. [2022-03-01 15:42:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43945 to 15298. [2022-03-01 15:42:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15297 states have (on average 2.8674903575864548) internal successors, (43864), 15297 states have internal predecessors, (43864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 43864 transitions. [2022-03-01 15:42:14,850 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 43864 transitions. Word has length 177 [2022-03-01 15:42:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:14,851 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 43864 transitions. [2022-03-01 15:42:14,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 43864 transitions. [2022-03-01 15:42:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:14,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:14,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:14,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-01 15:42:15,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:42:15,074 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1993797414, now seen corresponding path program 45 times [2022-03-01 15:42:15,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:15,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051144168] [2022-03-01 15:42:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:15,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:15,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051144168] [2022-03-01 15:42:15,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051144168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:15,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:15,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:15,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213222713] [2022-03-01 15:42:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:15,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:15,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:15,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:15,418 INFO L87 Difference]: Start difference. First operand 15298 states and 43864 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:16,054 INFO L93 Difference]: Finished difference Result 26966 states and 77290 transitions. [2022-03-01 15:42:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:42:16,054 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:16,105 INFO L225 Difference]: With dead ends: 26966 [2022-03-01 15:42:16,105 INFO L226 Difference]: Without dead ends: 26966 [2022-03-01 15:42:16,105 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 [2022-03-01 15:42:16,106 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 791 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:16,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 2808 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:16,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26966 states. [2022-03-01 15:42:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26966 to 15314. [2022-03-01 15:42:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 2.868412460001306) internal successors, (43924), 15313 states have internal predecessors, (43924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 43924 transitions. [2022-03-01 15:42:16,391 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 43924 transitions. Word has length 177 [2022-03-01 15:42:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:16,391 INFO L470 AbstractCegarLoop]: Abstraction has 15314 states and 43924 transitions. [2022-03-01 15:42:16,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 43924 transitions. [2022-03-01 15:42:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:16,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:16,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:16,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-03-01 15:42:16,411 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 774256320, now seen corresponding path program 40 times [2022-03-01 15:42:16,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:16,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405189766] [2022-03-01 15:42:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:16,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:16,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:16,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405189766] [2022-03-01 15:42:16,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405189766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:16,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:16,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:16,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742426106] [2022-03-01 15:42:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:16,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:16,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:16,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:16,739 INFO L87 Difference]: Start difference. First operand 15314 states and 43924 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:17,375 INFO L93 Difference]: Finished difference Result 26922 states and 77176 transitions. [2022-03-01 15:42:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:42:17,375 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 [2022-03-01 15:42:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:17,429 INFO L225 Difference]: With dead ends: 26922 [2022-03-01 15:42:17,429 INFO L226 Difference]: Without dead ends: 26922 [2022-03-01 15:42:17,429 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 [2022-03-01 15:42:17,430 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1105 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:17,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 2574 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26922 states. [2022-03-01 15:42:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26922 to 15322. [2022-03-01 15:42:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15322 states, 15321 states have (on average 2.868350629854448) internal successors, (43946), 15321 states have internal predecessors, (43946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15322 states to 15322 states and 43946 transitions. [2022-03-01 15:42:17,711 INFO L78 Accepts]: Start accepts. Automaton has 15322 states and 43946 transitions. Word has length 177 [2022-03-01 15:42:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:17,711 INFO L470 AbstractCegarLoop]: Abstraction has 15322 states and 43946 transitions. [2022-03-01 15:42:17,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 15322 states and 43946 transitions. [2022-03-01 15:42:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:17,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:17,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:17,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-03-01 15:42:17,732 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:17,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash 975805210, now seen corresponding path program 62 times [2022-03-01 15:42:17,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:17,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580474544] [2022-03-01 15:42:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:18,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:18,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580474544] [2022-03-01 15:42:18,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580474544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:18,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:18,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:18,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725662939] [2022-03-01 15:42:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:18,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:18,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:18,075 INFO L87 Difference]: Start difference. First operand 15322 states and 43946 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:18,753 INFO L93 Difference]: Finished difference Result 27228 states and 78054 transitions. [2022-03-01 15:42:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:18,753 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:18,803 INFO L225 Difference]: With dead ends: 27228 [2022-03-01 15:42:18,803 INFO L226 Difference]: Without dead ends: 27228 [2022-03-01 15:42:18,803 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 [2022-03-01 15:42:18,804 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:18,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 3152 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:42:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27228 states. [2022-03-01 15:42:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27228 to 15314. [2022-03-01 15:42:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 2.868412460001306) internal successors, (43924), 15313 states have internal predecessors, (43924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 43924 transitions. [2022-03-01 15:42:19,088 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 43924 transitions. Word has length 177 [2022-03-01 15:42:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:19,088 INFO L470 AbstractCegarLoop]: Abstraction has 15314 states and 43924 transitions. [2022-03-01 15:42:19,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:19,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 43924 transitions. [2022-03-01 15:42:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:19,108 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:19,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:19,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-03-01 15:42:19,108 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1439379952, now seen corresponding path program 34 times [2022-03-01 15:42:19,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:19,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698238451] [2022-03-01 15:42:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:19,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:19,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698238451] [2022-03-01 15:42:19,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698238451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:19,445 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:19,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:19,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088239117] [2022-03-01 15:42:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:19,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:19,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:19,446 INFO L87 Difference]: Start difference. First operand 15314 states and 43924 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:20,121 INFO L93 Difference]: Finished difference Result 27124 states and 77760 transitions. [2022-03-01 15:42:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:20,167 INFO L225 Difference]: With dead ends: 27124 [2022-03-01 15:42:20,167 INFO L226 Difference]: Without dead ends: 27124 [2022-03-01 15:42:20,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:42:20,167 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 859 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:20,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 3103 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27124 states. [2022-03-01 15:42:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27124 to 15290. [2022-03-01 15:42:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15290 states, 15289 states have (on average 2.8670285826411144) internal successors, (43834), 15289 states have internal predecessors, (43834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 43834 transitions. [2022-03-01 15:42:20,447 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 43834 transitions. Word has length 177 [2022-03-01 15:42:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 15290 states and 43834 transitions. [2022-03-01 15:42:20,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 43834 transitions. [2022-03-01 15:42:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:20,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:20,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-03-01 15:42:20,467 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 625248650, now seen corresponding path program 46 times [2022-03-01 15:42:20,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:20,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517917820] [2022-03-01 15:42:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:20,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:20,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:20,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517917820] [2022-03-01 15:42:20,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517917820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:20,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:20,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:20,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685736621] [2022-03-01 15:42:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:20,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:20,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:20,811 INFO L87 Difference]: Start difference. First operand 15290 states and 43834 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:21,438 INFO L93 Difference]: Finished difference Result 26806 states and 76778 transitions. [2022-03-01 15:42:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:21,488 INFO L225 Difference]: With dead ends: 26806 [2022-03-01 15:42:21,488 INFO L226 Difference]: Without dead ends: 26806 [2022-03-01 15:42:21,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:42:21,488 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 997 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:21,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 2824 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26806 states. [2022-03-01 15:42:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26806 to 15282. [2022-03-01 15:42:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15282 states, 15281 states have (on average 2.865519272298933) internal successors, (43788), 15281 states have internal predecessors, (43788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 43788 transitions. [2022-03-01 15:42:21,773 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 43788 transitions. Word has length 177 [2022-03-01 15:42:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:21,773 INFO L470 AbstractCegarLoop]: Abstraction has 15282 states and 43788 transitions. [2022-03-01 15:42:21,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 43788 transitions. [2022-03-01 15:42:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:21,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:21,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:21,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-03-01 15:42:21,794 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash -901664912, now seen corresponding path program 41 times [2022-03-01 15:42:21,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:21,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520778121] [2022-03-01 15:42:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:21,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:22,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:22,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520778121] [2022-03-01 15:42:22,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520778121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:22,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:22,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:22,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018976271] [2022-03-01 15:42:22,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:22,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:22,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:22,131 INFO L87 Difference]: Start difference. First operand 15282 states and 43788 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:22,762 INFO L93 Difference]: Finished difference Result 26770 states and 76686 transitions. [2022-03-01 15:42:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:22,811 INFO L225 Difference]: With dead ends: 26770 [2022-03-01 15:42:22,811 INFO L226 Difference]: Without dead ends: 26770 [2022-03-01 15:42:22,811 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 [2022-03-01 15:42:22,811 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 848 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:22,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2950 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26770 states. [2022-03-01 15:42:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26770 to 15298. [2022-03-01 15:42:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15297 states have (on average 2.8653984441393736) internal successors, (43832), 15297 states have internal predecessors, (43832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 43832 transitions. [2022-03-01 15:42:23,092 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 43832 transitions. Word has length 177 [2022-03-01 15:42:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:23,092 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 43832 transitions. [2022-03-01 15:42:23,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 43832 transitions. [2022-03-01 15:42:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:23,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:23,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:23,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-03-01 15:42:23,113 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:23,113 INFO L85 PathProgramCache]: Analyzing trace with hash -700116022, now seen corresponding path program 63 times [2022-03-01 15:42:23,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:23,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229628444] [2022-03-01 15:42:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:23,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:23,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229628444] [2022-03-01 15:42:23,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229628444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:23,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:23,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:23,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736432908] [2022-03-01 15:42:23,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:23,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:23,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:23,455 INFO L87 Difference]: Start difference. First operand 15298 states and 43832 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:24,161 INFO L93 Difference]: Finished difference Result 27092 states and 77608 transitions. [2022-03-01 15:42:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:24,211 INFO L225 Difference]: With dead ends: 27092 [2022-03-01 15:42:24,211 INFO L226 Difference]: Without dead ends: 27092 [2022-03-01 15:42:24,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:42:24,211 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 897 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:24,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 3611 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:42:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27092 states. [2022-03-01 15:42:24,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27092 to 15298. [2022-03-01 15:42:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15297 states have (on average 2.8653984441393736) internal successors, (43832), 15297 states have internal predecessors, (43832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 43832 transitions. [2022-03-01 15:42:24,490 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 43832 transitions. Word has length 177 [2022-03-01 15:42:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 43832 transitions. [2022-03-01 15:42:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 43832 transitions. [2022-03-01 15:42:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:24,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:24,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:24,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-03-01 15:42:24,511 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash -236541280, now seen corresponding path program 35 times [2022-03-01 15:42:24,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:24,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100122275] [2022-03-01 15:42:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:24,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:24,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:24,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100122275] [2022-03-01 15:42:24,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100122275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:24,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:24,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:24,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204165587] [2022-03-01 15:42:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:24,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:24,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:24,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:24,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:24,849 INFO L87 Difference]: Start difference. First operand 15298 states and 43832 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:25,472 INFO L93 Difference]: Finished difference Result 26996 states and 77336 transitions. [2022-03-01 15:42:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:25,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:25,603 INFO L225 Difference]: With dead ends: 26996 [2022-03-01 15:42:25,603 INFO L226 Difference]: Without dead ends: 26996 [2022-03-01 15:42:25,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:42:25,603 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1317 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:25,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 2794 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26996 states. [2022-03-01 15:42:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26996 to 15290. [2022-03-01 15:42:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15290 states, 15289 states have (on average 2.864412322584865) internal successors, (43794), 15289 states have internal predecessors, (43794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 43794 transitions. [2022-03-01 15:42:25,843 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 43794 transitions. Word has length 177 [2022-03-01 15:42:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:25,843 INFO L470 AbstractCegarLoop]: Abstraction has 15290 states and 43794 transitions. [2022-03-01 15:42:25,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 43794 transitions. [2022-03-01 15:42:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:25,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:25,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:25,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-03-01 15:42:25,862 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:25,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1960172420, now seen corresponding path program 64 times [2022-03-01 15:42:25,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:25,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925165852] [2022-03-01 15:42:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:26,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:26,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925165852] [2022-03-01 15:42:26,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925165852] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:26,268 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:26,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:26,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237766755] [2022-03-01 15:42:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:26,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:26,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:26,269 INFO L87 Difference]: Start difference. First operand 15290 states and 43794 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:26,944 INFO L93 Difference]: Finished difference Result 27428 states and 78540 transitions. [2022-03-01 15:42:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:42:26,944 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 [2022-03-01 15:42:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:26,994 INFO L225 Difference]: With dead ends: 27428 [2022-03-01 15:42:26,994 INFO L226 Difference]: Without dead ends: 27428 [2022-03-01 15:42:26,994 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 [2022-03-01 15:42:26,995 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1279 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:26,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3398 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27428 states. [2022-03-01 15:42:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27428 to 15274. [2022-03-01 15:42:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15274 states, 15273 states have (on average 2.864532180972959) internal successors, (43750), 15273 states have internal predecessors, (43750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15274 states to 15274 states and 43750 transitions. [2022-03-01 15:42:27,282 INFO L78 Accepts]: Start accepts. Automaton has 15274 states and 43750 transitions. Word has length 177 [2022-03-01 15:42:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:27,282 INFO L470 AbstractCegarLoop]: Abstraction has 15274 states and 43750 transitions. [2022-03-01 15:42:27,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 15274 states and 43750 transitions. [2022-03-01 15:42:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:27,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:27,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:27,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-03-01 15:42:27,303 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2039912484, now seen corresponding path program 36 times [2022-03-01 15:42:27,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:27,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862893033] [2022-03-01 15:42:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:27,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:27,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:27,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862893033] [2022-03-01 15:42:27,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862893033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:27,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:27,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:27,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252249592] [2022-03-01 15:42:27,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:27,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:27,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:27,629 INFO L87 Difference]: Start difference. First operand 15274 states and 43750 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:28,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:28,260 INFO L93 Difference]: Finished difference Result 26836 states and 76856 transitions. [2022-03-01 15:42:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:42:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:28,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:28,309 INFO L225 Difference]: With dead ends: 26836 [2022-03-01 15:42:28,309 INFO L226 Difference]: Without dead ends: 26836 [2022-03-01 15:42:28,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:42:28,310 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 912 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:28,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2977 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26836 states. [2022-03-01 15:42:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26836 to 15290. [2022-03-01 15:42:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15290 states, 15289 states have (on average 2.864412322584865) internal successors, (43794), 15289 states have internal predecessors, (43794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 43794 transitions. [2022-03-01 15:42:28,599 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 43794 transitions. Word has length 177 [2022-03-01 15:42:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:28,599 INFO L470 AbstractCegarLoop]: Abstraction has 15290 states and 43794 transitions. [2022-03-01 15:42:28,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 43794 transitions. [2022-03-01 15:42:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:28,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:28,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:28,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-03-01 15:42:28,620 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash 160691390, now seen corresponding path program 37 times [2022-03-01 15:42:28,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:28,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806645106] [2022-03-01 15:42:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:28,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:28,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:28,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806645106] [2022-03-01 15:42:28,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806645106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:28,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:28,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:28,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435392612] [2022-03-01 15:42:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:28,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:28,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:28,936 INFO L87 Difference]: Start difference. First operand 15290 states and 43794 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:29,684 INFO L93 Difference]: Finished difference Result 26188 states and 74786 transitions. [2022-03-01 15:42:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:42:29,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:29,730 INFO L225 Difference]: With dead ends: 26188 [2022-03-01 15:42:29,730 INFO L226 Difference]: Without dead ends: 26188 [2022-03-01 15:42:29,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:42:29,731 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1020 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:29,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3581 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:42:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2022-03-01 15:42:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 13682. [2022-03-01 15:42:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13682 states, 13681 states have (on average 2.8492069293180324) internal successors, (38980), 13681 states have internal predecessors, (38980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13682 states to 13682 states and 38980 transitions. [2022-03-01 15:42:29,999 INFO L78 Accepts]: Start accepts. Automaton has 13682 states and 38980 transitions. Word has length 177 [2022-03-01 15:42:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:29,999 INFO L470 AbstractCegarLoop]: Abstraction has 13682 states and 38980 transitions. [2022-03-01 15:42:30,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 13682 states and 38980 transitions. [2022-03-01 15:42:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:30,020 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:30,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:30,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-03-01 15:42:30,020 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1092416362, now seen corresponding path program 65 times [2022-03-01 15:42:30,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:30,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341404990] [2022-03-01 15:42:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:30,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:30,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341404990] [2022-03-01 15:42:30,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341404990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:30,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:30,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:30,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529103322] [2022-03-01 15:42:30,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:30,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:30,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:30,313 INFO L87 Difference]: Start difference. First operand 13682 states and 38980 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:31,043 INFO L93 Difference]: Finished difference Result 24140 states and 69158 transitions. [2022-03-01 15:42:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:42:31,044 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:31,088 INFO L225 Difference]: With dead ends: 24140 [2022-03-01 15:42:31,088 INFO L226 Difference]: Without dead ends: 24140 [2022-03-01 15:42:31,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:42:31,089 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1445 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:31,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 3384 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24140 states. [2022-03-01 15:42:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24140 to 13698. [2022-03-01 15:42:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 2.8502591808425204) internal successors, (39040), 13697 states have internal predecessors, (39040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 39040 transitions. [2022-03-01 15:42:31,405 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 39040 transitions. Word has length 177 [2022-03-01 15:42:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:31,405 INFO L470 AbstractCegarLoop]: Abstraction has 13698 states and 39040 transitions. [2022-03-01 15:42:31,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 39040 transitions. [2022-03-01 15:42:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:31,423 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:31,423 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] [2022-03-01 15:42:31,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-03-01 15:42:31,423 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2001586854, now seen corresponding path program 47 times [2022-03-01 15:42:31,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:31,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392514384] [2022-03-01 15:42:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:31,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:31,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392514384] [2022-03-01 15:42:31,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392514384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:42:31,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227047471] [2022-03-01 15:42:31,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:42:31,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:42:31,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:42:31,725 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:42:31,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-01 15:42:31,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:42:31,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:42:31,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-01 15:42:31,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:42:32,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:32,228 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 [2022-03-01 15:42:32,568 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:42:32,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:42:32,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:42:32,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:33,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:33,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:42:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:42:33,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:42:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:33,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227047471] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:42:33,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:42:33,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-01 15:42:33,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910312498] [2022-03-01 15:42:33,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:42:33,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-01 15:42:33,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-01 15:42:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2119, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:42:33,884 INFO L87 Difference]: Start difference. First operand 13698 states and 39040 transitions. Second operand has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:40,070 INFO L93 Difference]: Finished difference Result 38883 states and 112074 transitions. [2022-03-01 15:42:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 15:42:40,071 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:40,149 INFO L225 Difference]: With dead ends: 38883 [2022-03-01 15:42:40,149 INFO L226 Difference]: Without dead ends: 38883 [2022-03-01 15:42:40,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2303, Invalid=9039, Unknown=0, NotChecked=0, Total=11342 [2022-03-01 15:42:40,150 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 2968 mSDsluCounter, 8751 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 8985 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:40,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2968 Valid, 8985 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:42:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38883 states. [2022-03-01 15:42:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38883 to 13698. [2022-03-01 15:42:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 2.8502591808425204) internal successors, (39040), 13697 states have internal predecessors, (39040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 39040 transitions. [2022-03-01 15:42:40,539 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 39040 transitions. Word has length 177 [2022-03-01 15:42:40,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:40,539 INFO L470 AbstractCegarLoop]: Abstraction has 13698 states and 39040 transitions. [2022-03-01 15:42:40,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 39040 transitions. [2022-03-01 15:42:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:40,557 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:40,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:40,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-01 15:42:40,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-03-01 15:42:40,758 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1688917108, now seen corresponding path program 48 times [2022-03-01 15:42:40,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:40,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384392736] [2022-03-01 15:42:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:41,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:41,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384392736] [2022-03-01 15:42:41,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384392736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:41,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:41,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:41,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040398203] [2022-03-01 15:42:41,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:41,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:41,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:41,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:41,111 INFO L87 Difference]: Start difference. First operand 13698 states and 39040 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:41,707 INFO L93 Difference]: Finished difference Result 20455 states and 58657 transitions. [2022-03-01 15:42:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:41,707 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:41,741 INFO L225 Difference]: With dead ends: 20455 [2022-03-01 15:42:41,741 INFO L226 Difference]: Without dead ends: 20455 [2022-03-01 15:42:41,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:42:41,742 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 901 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:41,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 2574 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20455 states. [2022-03-01 15:42:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20455 to 13730. [2022-03-01 15:42:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13730 states, 13729 states have (on average 2.85177361788914) internal successors, (39152), 13729 states have internal predecessors, (39152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:42,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13730 states to 13730 states and 39152 transitions. [2022-03-01 15:42:42,026 INFO L78 Accepts]: Start accepts. Automaton has 13730 states and 39152 transitions. Word has length 177 [2022-03-01 15:42:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:42,027 INFO L470 AbstractCegarLoop]: Abstraction has 13730 states and 39152 transitions. [2022-03-01 15:42:42,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:42,027 INFO L276 IsEmpty]: Start isEmpty. Operand 13730 states and 39152 transitions. [2022-03-01 15:42:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:42,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:42,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:42,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-03-01 15:42:42,045 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 162003546, now seen corresponding path program 42 times [2022-03-01 15:42:42,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:42,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53901756] [2022-03-01 15:42:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:42,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:42,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53901756] [2022-03-01 15:42:42,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53901756] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:42,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:42,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:42,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094741074] [2022-03-01 15:42:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:42,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:42,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:42,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:42,380 INFO L87 Difference]: Start difference. First operand 13730 states and 39152 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:42,973 INFO L93 Difference]: Finished difference Result 20551 states and 58921 transitions. [2022-03-01 15:42:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:42,973 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:43,007 INFO L225 Difference]: With dead ends: 20551 [2022-03-01 15:42:43,007 INFO L226 Difference]: Without dead ends: 20551 [2022-03-01 15:42:43,008 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 [2022-03-01 15:42:43,008 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1181 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:43,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 2653 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20551 states. [2022-03-01 15:42:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20551 to 13746. [2022-03-01 15:42:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13746 states, 13745 states have (on average 2.8516551473263005) internal successors, (39196), 13745 states have internal predecessors, (39196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13746 states to 13746 states and 39196 transitions. [2022-03-01 15:42:43,230 INFO L78 Accepts]: Start accepts. Automaton has 13746 states and 39196 transitions. Word has length 177 [2022-03-01 15:42:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:43,230 INFO L470 AbstractCegarLoop]: Abstraction has 13746 states and 39196 transitions. [2022-03-01 15:42:43,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13746 states and 39196 transitions. [2022-03-01 15:42:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:43,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:43,248 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] [2022-03-01 15:42:43,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-03-01 15:42:43,248 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 363552436, now seen corresponding path program 66 times [2022-03-01 15:42:43,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:43,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981930520] [2022-03-01 15:42:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:43,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:43,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981930520] [2022-03-01 15:42:43,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981930520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:43,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:43,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:43,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694218892] [2022-03-01 15:42:43,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:43,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:43,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:43,594 INFO L87 Difference]: Start difference. First operand 13746 states and 39196 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:44,203 INFO L93 Difference]: Finished difference Result 20833 states and 59717 transitions. [2022-03-01 15:42:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:44,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:44,239 INFO L225 Difference]: With dead ends: 20833 [2022-03-01 15:42:44,239 INFO L226 Difference]: Without dead ends: 20833 [2022-03-01 15:42:44,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:42:44,240 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1283 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:44,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2993 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20833 states. [2022-03-01 15:42:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20833 to 13746. [2022-03-01 15:42:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13746 states, 13745 states have (on average 2.8516551473263005) internal successors, (39196), 13745 states have internal predecessors, (39196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13746 states to 13746 states and 39196 transitions. [2022-03-01 15:42:44,481 INFO L78 Accepts]: Start accepts. Automaton has 13746 states and 39196 transitions. Word has length 177 [2022-03-01 15:42:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:44,481 INFO L470 AbstractCegarLoop]: Abstraction has 13746 states and 39196 transitions. [2022-03-01 15:42:44,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13746 states and 39196 transitions. [2022-03-01 15:42:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:44,500 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:44,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:44,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-03-01 15:42:44,500 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312106, now seen corresponding path program 49 times [2022-03-01 15:42:44,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:44,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565964247] [2022-03-01 15:42:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:44,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:44,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565964247] [2022-03-01 15:42:44,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565964247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:44,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:44,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:44,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504679509] [2022-03-01 15:42:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:44,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:44,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:44,839 INFO L87 Difference]: Start difference. First operand 13746 states and 39196 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:45,443 INFO L93 Difference]: Finished difference Result 20937 states and 60011 transitions. [2022-03-01 15:42:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:42:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:45,478 INFO L225 Difference]: With dead ends: 20937 [2022-03-01 15:42:45,478 INFO L226 Difference]: Without dead ends: 20937 [2022-03-01 15:42:45,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:42:45,479 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1157 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:45,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 2698 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20937 states. [2022-03-01 15:42:45,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20937 to 13738. [2022-03-01 15:42:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13738 states, 13737 states have (on average 2.850549610540875) internal successors, (39158), 13737 states have internal predecessors, (39158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 39158 transitions. [2022-03-01 15:42:45,706 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 39158 transitions. Word has length 177 [2022-03-01 15:42:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:45,706 INFO L470 AbstractCegarLoop]: Abstraction has 13738 states and 39158 transitions. [2022-03-01 15:42:45,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 39158 transitions. [2022-03-01 15:42:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:45,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:45,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:45,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-03-01 15:42:45,724 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1271126418, now seen corresponding path program 67 times [2022-03-01 15:42:45,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:45,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412229491] [2022-03-01 15:42:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:46,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:46,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412229491] [2022-03-01 15:42:46,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412229491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:46,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:46,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:46,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317377567] [2022-03-01 15:42:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:46,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:46,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:46,072 INFO L87 Difference]: Start difference. First operand 13738 states and 39158 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:46,756 INFO L93 Difference]: Finished difference Result 21225 states and 60819 transitions. [2022-03-01 15:42:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:42:46,756 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:46,792 INFO L225 Difference]: With dead ends: 21225 [2022-03-01 15:42:46,792 INFO L226 Difference]: Without dead ends: 21225 [2022-03-01 15:42:46,792 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 [2022-03-01 15:42:46,793 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 997 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:46,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 3164 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21225 states. [2022-03-01 15:42:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21225 to 13722. [2022-03-01 15:42:47,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13722 states, 13721 states have (on average 2.850666861015961) internal successors, (39114), 13721 states have internal predecessors, (39114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13722 states to 13722 states and 39114 transitions. [2022-03-01 15:42:47,034 INFO L78 Accepts]: Start accepts. Automaton has 13722 states and 39114 transitions. Word has length 177 [2022-03-01 15:42:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:47,034 INFO L470 AbstractCegarLoop]: Abstraction has 13722 states and 39114 transitions. [2022-03-01 15:42:47,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 13722 states and 39114 transitions. [2022-03-01 15:42:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:47,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:47,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:47,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-03-01 15:42:47,053 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash 181940902, now seen corresponding path program 50 times [2022-03-01 15:42:47,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:47,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138226998] [2022-03-01 15:42:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:47,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:47,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:47,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138226998] [2022-03-01 15:42:47,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138226998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:47,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:47,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:47,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125185050] [2022-03-01 15:42:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:47,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:47,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:47,398 INFO L87 Difference]: Start difference. First operand 13722 states and 39114 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:48,100 INFO L93 Difference]: Finished difference Result 21001 states and 60187 transitions. [2022-03-01 15:42:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:42:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:48,136 INFO L225 Difference]: With dead ends: 21001 [2022-03-01 15:42:48,136 INFO L226 Difference]: Without dead ends: 21001 [2022-03-01 15:42:48,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:42:48,137 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 776 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:48,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 3094 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:42:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21001 states. [2022-03-01 15:42:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21001 to 13738. [2022-03-01 15:42:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13738 states, 13737 states have (on average 2.850549610540875) internal successors, (39158), 13737 states have internal predecessors, (39158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 39158 transitions. [2022-03-01 15:42:48,381 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 39158 transitions. Word has length 177 [2022-03-01 15:42:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:48,381 INFO L470 AbstractCegarLoop]: Abstraction has 13738 states and 39158 transitions. [2022-03-01 15:42:48,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 39158 transitions. [2022-03-01 15:42:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:48,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:48,400 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] [2022-03-01 15:42:48,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-03-01 15:42:48,401 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:48,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1912422520, now seen corresponding path program 51 times [2022-03-01 15:42:48,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:48,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033443562] [2022-03-01 15:42:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:48,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:48,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:48,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033443562] [2022-03-01 15:42:48,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033443562] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:48,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:48,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:48,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442917899] [2022-03-01 15:42:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:48,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:48,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:48,720 INFO L87 Difference]: Start difference. First operand 13738 states and 39158 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:49,451 INFO L93 Difference]: Finished difference Result 21865 states and 62659 transitions. [2022-03-01 15:42:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-01 15:42:49,452 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:49,491 INFO L225 Difference]: With dead ends: 21865 [2022-03-01 15:42:49,491 INFO L226 Difference]: Without dead ends: 21865 [2022-03-01 15:42:49,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 15:42:49,492 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1017 mSDsluCounter, 2901 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:49,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 3224 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:42:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21865 states. [2022-03-01 15:42:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21865 to 13682. [2022-03-01 15:42:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13682 states, 13681 states have (on average 2.8492069293180324) internal successors, (38980), 13681 states have internal predecessors, (38980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13682 states to 13682 states and 38980 transitions. [2022-03-01 15:42:49,744 INFO L78 Accepts]: Start accepts. Automaton has 13682 states and 38980 transitions. Word has length 177 [2022-03-01 15:42:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:49,744 INFO L470 AbstractCegarLoop]: Abstraction has 13682 states and 38980 transitions. [2022-03-01 15:42:49,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 13682 states and 38980 transitions. [2022-03-01 15:42:49,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:49,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:49,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:49,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-03-01 15:42:49,763 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash 758245182, now seen corresponding path program 52 times [2022-03-01 15:42:49,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:49,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12145991] [2022-03-01 15:42:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:50,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:50,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12145991] [2022-03-01 15:42:50,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12145991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:50,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:50,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:42:50,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967517838] [2022-03-01 15:42:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:50,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:42:50,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:42:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:42:50,104 INFO L87 Difference]: Start difference. First operand 13682 states and 38980 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:50,778 INFO L93 Difference]: Finished difference Result 19853 states and 56761 transitions. [2022-03-01 15:42:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:42:50,779 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:50,814 INFO L225 Difference]: With dead ends: 19853 [2022-03-01 15:42:50,814 INFO L226 Difference]: Without dead ends: 19853 [2022-03-01 15:42:50,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:42:50,814 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 1145 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:50,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 2613 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19853 states. [2022-03-01 15:42:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19853 to 13682. [2022-03-01 15:42:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13682 states, 13681 states have (on average 2.8492069293180324) internal successors, (38980), 13681 states have internal predecessors, (38980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13682 states to 13682 states and 38980 transitions. [2022-03-01 15:42:51,035 INFO L78 Accepts]: Start accepts. Automaton has 13682 states and 38980 transitions. Word has length 177 [2022-03-01 15:42:51,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:51,036 INFO L470 AbstractCegarLoop]: Abstraction has 13682 states and 38980 transitions. [2022-03-01 15:42:51,036 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) [2022-03-01 15:42:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13682 states and 38980 transitions. [2022-03-01 15:42:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:51,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:51,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:51,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-01 15:42:51,054 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1815179962, now seen corresponding path program 43 times [2022-03-01 15:42:51,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:51,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232714317] [2022-03-01 15:42:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:51,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:51,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232714317] [2022-03-01 15:42:51,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232714317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:42:51,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:42:51,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:42:51,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378300051] [2022-03-01 15:42:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:42:51,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:42:51,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:42:51,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:42:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:42:51,409 INFO L87 Difference]: Start difference. First operand 13682 states and 38980 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:52,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:42:52,081 INFO L93 Difference]: Finished difference Result 19965 states and 57085 transitions. [2022-03-01 15:42:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:42:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:42:52,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:42:52,116 INFO L225 Difference]: With dead ends: 19965 [2022-03-01 15:42:52,116 INFO L226 Difference]: Without dead ends: 19965 [2022-03-01 15:42:52,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:42:52,117 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 916 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:42:52,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 2791 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:42:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2022-03-01 15:42:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 13706. [2022-03-01 15:42:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13706 states, 13705 states have (on average 2.849470995986866) internal successors, (39052), 13705 states have internal predecessors, (39052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 39052 transitions. [2022-03-01 15:42:52,342 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 39052 transitions. Word has length 177 [2022-03-01 15:42:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:42:52,342 INFO L470 AbstractCegarLoop]: Abstraction has 13706 states and 39052 transitions. [2022-03-01 15:42:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 39052 transitions. [2022-03-01 15:42:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:42:52,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:42:52,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:42:52,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-01 15:42:52,361 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:42:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:42:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -572309710, now seen corresponding path program 44 times [2022-03-01 15:42:52,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:42:52,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162082973] [2022-03-01 15:42:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:42:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:42:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:42:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:42:52,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:42:52,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162082973] [2022-03-01 15:42:52,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162082973] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:42:52,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012017089] [2022-03-01 15:42:52,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:42:52,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:42:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:42:52,739 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:42:52,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-01 15:42:52,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:42:52,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:42:52,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-01 15:42:52,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:42:53,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:42:53,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:53,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:42:54,134 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:42:54,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:42:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:42:54,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:43:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:03,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012017089] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:43:03,757 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:43:03,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 12] total 53 [2022-03-01 15:43:03,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230521723] [2022-03-01 15:43:03,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:43:03,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-01 15:43:03,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:03,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-01 15:43:03,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2480, Unknown=16, NotChecked=0, Total=2756 [2022-03-01 15:43:03,758 INFO L87 Difference]: Start difference. First operand 13706 states and 39052 transitions. Second operand has 53 states, 53 states have (on average 7.528301886792453) internal successors, (399), 53 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:06,183 INFO L93 Difference]: Finished difference Result 21524 states and 61390 transitions. [2022-03-01 15:43:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 15:43:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.528301886792453) internal successors, (399), 53 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:06,219 INFO L225 Difference]: With dead ends: 21524 [2022-03-01 15:43:06,219 INFO L226 Difference]: Without dead ends: 21524 [2022-03-01 15:43:06,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1149, Invalid=5641, Unknown=16, NotChecked=0, Total=6806 [2022-03-01 15:43:06,220 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 2652 mSDsluCounter, 7933 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 306 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:06,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2652 Valid, 8125 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2512 Invalid, 0 Unknown, 306 Unchecked, 1.0s Time] [2022-03-01 15:43:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2022-03-01 15:43:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 13520. [2022-03-01 15:43:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13520 states, 13519 states have (on average 2.8460684961905467) internal successors, (38476), 13519 states have internal predecessors, (38476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 38476 transitions. [2022-03-01 15:43:06,456 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 38476 transitions. Word has length 177 [2022-03-01 15:43:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:06,456 INFO L470 AbstractCegarLoop]: Abstraction has 13520 states and 38476 transitions. [2022-03-01 15:43:06,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.528301886792453) internal successors, (399), 53 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:06,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 38476 transitions. [2022-03-01 15:43:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:06,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:06,474 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] [2022-03-01 15:43:06,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-01 15:43:06,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:06,675 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1698179548, now seen corresponding path program 53 times [2022-03-01 15:43:06,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:06,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330589436] [2022-03-01 15:43:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:07,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:07,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330589436] [2022-03-01 15:43:07,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330589436] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:07,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:07,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:07,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891094844] [2022-03-01 15:43:07,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:07,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:07,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:07,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:07,017 INFO L87 Difference]: Start difference. First operand 13520 states and 38476 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:07,665 INFO L93 Difference]: Finished difference Result 19905 states and 56881 transitions. [2022-03-01 15:43:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:07,699 INFO L225 Difference]: With dead ends: 19905 [2022-03-01 15:43:07,699 INFO L226 Difference]: Without dead ends: 19905 [2022-03-01 15:43:07,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:43:07,700 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 950 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:07,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 2865 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19905 states. [2022-03-01 15:43:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19905 to 13536. [2022-03-01 15:43:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 2.8471370520871813) internal successors, (38536), 13535 states have internal predecessors, (38536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 38536 transitions. [2022-03-01 15:43:07,921 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 38536 transitions. Word has length 177 [2022-03-01 15:43:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:07,921 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 38536 transitions. [2022-03-01 15:43:07,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 38536 transitions. [2022-03-01 15:43:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:07,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:07,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:07,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-03-01 15:43:07,940 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1069874186, now seen corresponding path program 45 times [2022-03-01 15:43:07,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:07,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553948214] [2022-03-01 15:43:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:08,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:08,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553948214] [2022-03-01 15:43:08,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553948214] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:08,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:08,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:08,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098298820] [2022-03-01 15:43:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:08,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:08,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:08,276 INFO L87 Difference]: Start difference. First operand 13536 states and 38536 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:08,958 INFO L93 Difference]: Finished difference Result 19859 states and 56751 transitions. [2022-03-01 15:43:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:08,996 INFO L225 Difference]: With dead ends: 19859 [2022-03-01 15:43:08,996 INFO L226 Difference]: Without dead ends: 19859 [2022-03-01 15:43:08,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:43:08,996 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1129 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2732 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2022-03-01 15:43:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 13544. [2022-03-01 15:43:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13544 states, 13543 states have (on average 2.847079672155357) internal successors, (38558), 13543 states have internal predecessors, (38558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 38558 transitions. [2022-03-01 15:43:09,253 INFO L78 Accepts]: Start accepts. Automaton has 13544 states and 38558 transitions. Word has length 177 [2022-03-01 15:43:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:09,253 INFO L470 AbstractCegarLoop]: Abstraction has 13544 states and 38558 transitions. [2022-03-01 15:43:09,253 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) [2022-03-01 15:43:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 13544 states and 38558 transitions. [2022-03-01 15:43:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:09,274 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:09,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:09,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-03-01 15:43:09,274 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1271423076, now seen corresponding path program 68 times [2022-03-01 15:43:09,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:09,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589163939] [2022-03-01 15:43:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:09,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:09,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:09,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589163939] [2022-03-01 15:43:09,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589163939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:09,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:09,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:09,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989689495] [2022-03-01 15:43:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:09,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:09,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:09,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:09,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:09,631 INFO L87 Difference]: Start difference. First operand 13544 states and 38558 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:10,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:10,274 INFO L93 Difference]: Finished difference Result 20101 states and 57437 transitions. [2022-03-01 15:43:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:43:10,275 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:10,312 INFO L225 Difference]: With dead ends: 20101 [2022-03-01 15:43:10,312 INFO L226 Difference]: Without dead ends: 20101 [2022-03-01 15:43:10,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:43:10,313 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 936 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:10,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 3174 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20101 states. [2022-03-01 15:43:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20101 to 13536. [2022-03-01 15:43:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 2.8471370520871813) internal successors, (38536), 13535 states have internal predecessors, (38536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 38536 transitions. [2022-03-01 15:43:10,572 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 38536 transitions. Word has length 177 [2022-03-01 15:43:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:10,572 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 38536 transitions. [2022-03-01 15:43:10,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 38536 transitions. [2022-03-01 15:43:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:10,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:10,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:10,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-03-01 15:43:10,593 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1401784550, now seen corresponding path program 54 times [2022-03-01 15:43:10,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:10,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237414465] [2022-03-01 15:43:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:10,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:10,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:10,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237414465] [2022-03-01 15:43:10,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237414465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:10,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:10,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:10,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803038122] [2022-03-01 15:43:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:10,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:10,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:10,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:10,953 INFO L87 Difference]: Start difference. First operand 13536 states and 38536 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:11,646 INFO L93 Difference]: Finished difference Result 20205 states and 57731 transitions. [2022-03-01 15:43:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:43:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:11,684 INFO L225 Difference]: With dead ends: 20205 [2022-03-01 15:43:11,684 INFO L226 Difference]: Without dead ends: 20205 [2022-03-01 15:43:11,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 15:43:11,685 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 977 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:11,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 3344 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:11,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20205 states. [2022-03-01 15:43:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20205 to 13512. [2022-03-01 15:43:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13512 states, 13511 states have (on average 2.845533269188069) internal successors, (38446), 13511 states have internal predecessors, (38446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13512 states to 13512 states and 38446 transitions. [2022-03-01 15:43:11,975 INFO L78 Accepts]: Start accepts. Automaton has 13512 states and 38446 transitions. Word has length 177 [2022-03-01 15:43:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:11,975 INFO L470 AbstractCegarLoop]: Abstraction has 13512 states and 38446 transitions. [2022-03-01 15:43:11,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13512 states and 38446 transitions. [2022-03-01 15:43:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:11,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:11,994 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] [2022-03-01 15:43:11,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-03-01 15:43:11,994 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 920866516, now seen corresponding path program 55 times [2022-03-01 15:43:11,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:11,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9590693] [2022-03-01 15:43:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:12,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:12,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9590693] [2022-03-01 15:43:12,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9590693] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:12,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:12,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:12,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734791066] [2022-03-01 15:43:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:12,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:12,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:12,334 INFO L87 Difference]: Start difference. First operand 13512 states and 38446 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:12,946 INFO L93 Difference]: Finished difference Result 19969 states and 57081 transitions. [2022-03-01 15:43:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:12,946 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:12,978 INFO L225 Difference]: With dead ends: 19969 [2022-03-01 15:43:12,979 INFO L226 Difference]: Without dead ends: 19969 [2022-03-01 15:43:12,979 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 [2022-03-01 15:43:12,979 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1087 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:12,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2500 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:12,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19969 states. [2022-03-01 15:43:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19969 to 13544. [2022-03-01 15:43:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13544 states, 13543 states have (on average 2.847079672155357) internal successors, (38558), 13543 states have internal predecessors, (38558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 38558 transitions. [2022-03-01 15:43:13,198 INFO L78 Accepts]: Start accepts. Automaton has 13544 states and 38558 transitions. Word has length 177 [2022-03-01 15:43:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:13,198 INFO L470 AbstractCegarLoop]: Abstraction has 13544 states and 38558 transitions. [2022-03-01 15:43:13,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 13544 states and 38558 transitions. [2022-03-01 15:43:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:13,216 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:13,216 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] [2022-03-01 15:43:13,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-03-01 15:43:13,216 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -606047046, now seen corresponding path program 46 times [2022-03-01 15:43:13,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:13,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623841296] [2022-03-01 15:43:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:13,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:13,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623841296] [2022-03-01 15:43:13,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623841296] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:13,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:13,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:13,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273090288] [2022-03-01 15:43:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:13,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:13,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:13,548 INFO L87 Difference]: Start difference. First operand 13544 states and 38558 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:14,207 INFO L93 Difference]: Finished difference Result 19931 states and 56973 transitions. [2022-03-01 15:43:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:14,243 INFO L225 Difference]: With dead ends: 19931 [2022-03-01 15:43:14,244 INFO L226 Difference]: Without dead ends: 19931 [2022-03-01 15:43:14,244 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 [2022-03-01 15:43:14,244 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 968 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:14,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 3046 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19931 states. [2022-03-01 15:43:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19931 to 13560. [2022-03-01 15:43:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 13559 states have (on average 2.8469651154214914) internal successors, (38602), 13559 states have internal predecessors, (38602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 38602 transitions. [2022-03-01 15:43:14,470 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 38602 transitions. Word has length 177 [2022-03-01 15:43:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:14,470 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 38602 transitions. [2022-03-01 15:43:14,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 38602 transitions. [2022-03-01 15:43:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:14,488 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:14,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:14,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-01 15:43:14,489 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash -404498156, now seen corresponding path program 69 times [2022-03-01 15:43:14,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:14,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188428234] [2022-03-01 15:43:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:14,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:14,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188428234] [2022-03-01 15:43:14,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188428234] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:14,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:14,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:14,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994119703] [2022-03-01 15:43:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:14,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:14,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:14,839 INFO L87 Difference]: Start difference. First operand 13560 states and 38602 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:15,499 INFO L93 Difference]: Finished difference Result 20189 states and 57703 transitions. [2022-03-01 15:43:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:15,533 INFO L225 Difference]: With dead ends: 20189 [2022-03-01 15:43:15,533 INFO L226 Difference]: Without dead ends: 20189 [2022-03-01 15:43:15,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:43:15,534 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 922 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:15,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 3121 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20189 states. [2022-03-01 15:43:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20189 to 13560. [2022-03-01 15:43:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 13559 states have (on average 2.8469651154214914) internal successors, (38602), 13559 states have internal predecessors, (38602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 38602 transitions. [2022-03-01 15:43:15,765 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 38602 transitions. Word has length 177 [2022-03-01 15:43:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:15,765 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 38602 transitions. [2022-03-01 15:43:15,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 38602 transitions. [2022-03-01 15:43:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:15,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:15,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:15,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-01 15:43:15,783 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:15,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1217261514, now seen corresponding path program 56 times [2022-03-01 15:43:15,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:15,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36901469] [2022-03-01 15:43:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:16,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:16,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36901469] [2022-03-01 15:43:16,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36901469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:16,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:16,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:16,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863432320] [2022-03-01 15:43:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:16,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:16,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:16,137 INFO L87 Difference]: Start difference. First operand 13560 states and 38602 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:16,752 INFO L93 Difference]: Finished difference Result 20301 states and 58019 transitions. [2022-03-01 15:43:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:16,788 INFO L225 Difference]: With dead ends: 20301 [2022-03-01 15:43:16,788 INFO L226 Difference]: Without dead ends: 20301 [2022-03-01 15:43:16,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:43:16,789 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 965 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:16,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 2748 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20301 states. [2022-03-01 15:43:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20301 to 13552. [2022-03-01 15:43:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 13551 states have (on average 2.8458416353036675) internal successors, (38564), 13551 states have internal predecessors, (38564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 38564 transitions. [2022-03-01 15:43:17,021 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 38564 transitions. Word has length 177 [2022-03-01 15:43:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:17,021 INFO L470 AbstractCegarLoop]: Abstraction has 13552 states and 38564 transitions. [2022-03-01 15:43:17,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 38564 transitions. [2022-03-01 15:43:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:17,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:17,039 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] [2022-03-01 15:43:17,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-03-01 15:43:17,040 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2039177010, now seen corresponding path program 70 times [2022-03-01 15:43:17,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:17,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469620705] [2022-03-01 15:43:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:17,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:17,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469620705] [2022-03-01 15:43:17,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469620705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:17,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:17,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:17,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159865179] [2022-03-01 15:43:17,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:17,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:17,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:17,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:17,408 INFO L87 Difference]: Start difference. First operand 13552 states and 38564 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:18,192 INFO L93 Difference]: Finished difference Result 20525 states and 58635 transitions. [2022-03-01 15:43:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:43:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:18,225 INFO L225 Difference]: With dead ends: 20525 [2022-03-01 15:43:18,225 INFO L226 Difference]: Without dead ends: 20525 [2022-03-01 15:43:18,225 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 [2022-03-01 15:43:18,225 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 900 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:18,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 3558 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20525 states. [2022-03-01 15:43:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20525 to 13536. [2022-03-01 15:43:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 2.8459549316586625) internal successors, (38520), 13535 states have internal predecessors, (38520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 38520 transitions. [2022-03-01 15:43:18,455 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 38520 transitions. Word has length 177 [2022-03-01 15:43:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:18,456 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 38520 transitions. [2022-03-01 15:43:18,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 38520 transitions. [2022-03-01 15:43:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:18,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:18,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:18,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-03-01 15:43:18,474 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash -586109690, now seen corresponding path program 57 times [2022-03-01 15:43:18,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:18,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036434362] [2022-03-01 15:43:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:18,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:18,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036434362] [2022-03-01 15:43:18,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036434362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:18,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:18,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:18,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713583365] [2022-03-01 15:43:18,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:18,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:18,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:18,801 INFO L87 Difference]: Start difference. First operand 13536 states and 38520 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:19,450 INFO L93 Difference]: Finished difference Result 20309 states and 58025 transitions. [2022-03-01 15:43:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 15:43:19,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:19,485 INFO L225 Difference]: With dead ends: 20309 [2022-03-01 15:43:19,486 INFO L226 Difference]: Without dead ends: 20309 [2022-03-01 15:43:19,486 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 [2022-03-01 15:43:19,486 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 767 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:19,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 2943 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2022-03-01 15:43:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 13552. [2022-03-01 15:43:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 13551 states have (on average 2.8458416353036675) internal successors, (38564), 13551 states have internal predecessors, (38564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 38564 transitions. [2022-03-01 15:43:19,721 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 38564 transitions. Word has length 177 [2022-03-01 15:43:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:19,721 INFO L470 AbstractCegarLoop]: Abstraction has 13552 states and 38564 transitions. [2022-03-01 15:43:19,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 38564 transitions. [2022-03-01 15:43:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:19,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:19,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-03-01 15:43:19,739 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1614494184, now seen corresponding path program 58 times [2022-03-01 15:43:19,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:19,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923905078] [2022-03-01 15:43:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:19,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:20,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:20,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923905078] [2022-03-01 15:43:20,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923905078] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:20,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:20,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:20,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715988636] [2022-03-01 15:43:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:20,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:20,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:20,085 INFO L87 Difference]: Start difference. First operand 13552 states and 38564 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:20,850 INFO L93 Difference]: Finished difference Result 21173 states and 60497 transitions. [2022-03-01 15:43:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:43:20,850 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 [2022-03-01 15:43:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:20,887 INFO L225 Difference]: With dead ends: 21173 [2022-03-01 15:43:20,887 INFO L226 Difference]: Without dead ends: 21173 [2022-03-01 15:43:20,887 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 [2022-03-01 15:43:20,887 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1063 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:20,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 3563 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21173 states. [2022-03-01 15:43:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21173 to 13488. [2022-03-01 15:43:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845703269815378) internal successors, (38380), 13487 states have internal predecessors, (38380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38380 transitions. [2022-03-01 15:43:21,119 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38380 transitions. Word has length 177 [2022-03-01 15:43:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:21,119 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38380 transitions. [2022-03-01 15:43:21,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38380 transitions. [2022-03-01 15:43:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:21,137 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:21,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:21,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-03-01 15:43:21,137 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 64342592, now seen corresponding path program 71 times [2022-03-01 15:43:21,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:21,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011845198] [2022-03-01 15:43:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:21,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:21,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:21,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011845198] [2022-03-01 15:43:21,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011845198] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:21,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:21,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:21,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323477699] [2022-03-01 15:43:21,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:21,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:21,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:21,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:21,420 INFO L87 Difference]: Start difference. First operand 13488 states and 38380 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:22,147 INFO L93 Difference]: Finished difference Result 23360 states and 66714 transitions. [2022-03-01 15:43:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 15:43:22,148 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:22,188 INFO L225 Difference]: With dead ends: 23360 [2022-03-01 15:43:22,188 INFO L226 Difference]: Without dead ends: 23360 [2022-03-01 15:43:22,188 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 [2022-03-01 15:43:22,188 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 1192 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:22,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 3810 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2022-03-01 15:43:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 13488. [2022-03-01 15:43:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845703269815378) internal successors, (38380), 13487 states have internal predecessors, (38380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38380 transitions. [2022-03-01 15:43:22,438 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38380 transitions. Word has length 177 [2022-03-01 15:43:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:22,438 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38380 transitions. [2022-03-01 15:43:22,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38380 transitions. [2022-03-01 15:43:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:22,456 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:22,456 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] [2022-03-01 15:43:22,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-01 15:43:22,456 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash 973513084, now seen corresponding path program 59 times [2022-03-01 15:43:22,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:22,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798204133] [2022-03-01 15:43:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:22,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:22,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798204133] [2022-03-01 15:43:22,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798204133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:43:22,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127596192] [2022-03-01 15:43:22,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:43:22,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:22,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:43:22,824 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:43:22,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-01 15:43:23,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:43:23,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:43:23,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-01 15:43:23,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:43:23,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:23,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:43:23,675 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:43:23,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:43:23,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:43:24,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:24,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:24,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:43:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:43:24,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:43:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:25,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127596192] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:43:25,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:43:25,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-01 15:43:25,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179331821] [2022-03-01 15:43:25,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:43:25,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-01 15:43:25,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-01 15:43:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 15:43:25,007 INFO L87 Difference]: Start difference. First operand 13488 states and 38380 transitions. Second operand has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:31,809 INFO L93 Difference]: Finished difference Result 43668 states and 125633 transitions. [2022-03-01 15:43:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 15:43:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:31,897 INFO L225 Difference]: With dead ends: 43668 [2022-03-01 15:43:31,897 INFO L226 Difference]: Without dead ends: 43668 [2022-03-01 15:43:31,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2497, Invalid=9713, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 15:43:31,899 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 3672 mSDsluCounter, 9079 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:31,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3672 Valid, 9323 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2809 Invalid, 0 Unknown, 157 Unchecked, 1.3s Time] [2022-03-01 15:43:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43668 states. [2022-03-01 15:43:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43668 to 13488. [2022-03-01 15:43:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845703269815378) internal successors, (38380), 13487 states have internal predecessors, (38380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38380 transitions. [2022-03-01 15:43:32,308 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38380 transitions. Word has length 177 [2022-03-01 15:43:32,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:32,309 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38380 transitions. [2022-03-01 15:43:32,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38380 transitions. [2022-03-01 15:43:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:32,327 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:32,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:32,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-01 15:43:32,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-03-01 15:43:32,528 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:32,528 INFO L85 PathProgramCache]: Analyzing trace with hash 660843338, now seen corresponding path program 60 times [2022-03-01 15:43:32,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:32,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637225815] [2022-03-01 15:43:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:32,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:32,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:32,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637225815] [2022-03-01 15:43:32,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637225815] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:32,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:32,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:32,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228783090] [2022-03-01 15:43:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:32,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:32,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:32,860 INFO L87 Difference]: Start difference. First operand 13488 states and 38380 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:33,518 INFO L93 Difference]: Finished difference Result 19137 states and 54525 transitions. [2022-03-01 15:43:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:43:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:33,551 INFO L225 Difference]: With dead ends: 19137 [2022-03-01 15:43:33,551 INFO L226 Difference]: Without dead ends: 19137 [2022-03-01 15:43:33,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:43:33,552 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 825 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:33,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 3453 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2022-03-01 15:43:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 13488. [2022-03-01 15:43:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845110106028027) internal successors, (38372), 13487 states have internal predecessors, (38372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38372 transitions. [2022-03-01 15:43:33,767 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38372 transitions. Word has length 177 [2022-03-01 15:43:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:33,767 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38372 transitions. [2022-03-01 15:43:33,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38372 transitions. [2022-03-01 15:43:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:33,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:33,784 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] [2022-03-01 15:43:33,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-03-01 15:43:33,785 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:33,785 INFO L85 PathProgramCache]: Analyzing trace with hash -866070224, now seen corresponding path program 47 times [2022-03-01 15:43:33,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:33,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229726649] [2022-03-01 15:43:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:33,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:34,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:34,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229726649] [2022-03-01 15:43:34,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229726649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:34,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:34,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:34,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112898306] [2022-03-01 15:43:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:34,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:34,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:34,111 INFO L87 Difference]: Start difference. First operand 13488 states and 38372 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:34,687 INFO L93 Difference]: Finished difference Result 18861 states and 53463 transitions. [2022-03-01 15:43:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:43:34,688 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 [2022-03-01 15:43:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:34,719 INFO L225 Difference]: With dead ends: 18861 [2022-03-01 15:43:34,720 INFO L226 Difference]: Without dead ends: 18861 [2022-03-01 15:43:34,720 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 [2022-03-01 15:43:34,720 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1251 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:34,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 2485 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18861 states. [2022-03-01 15:43:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18861 to 13220. [2022-03-01 15:43:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13220 states, 13219 states have (on average 2.8259323700733794) internal successors, (37356), 13219 states have internal predecessors, (37356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13220 states to 13220 states and 37356 transitions. [2022-03-01 15:43:34,925 INFO L78 Accepts]: Start accepts. Automaton has 13220 states and 37356 transitions. Word has length 177 [2022-03-01 15:43:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:34,926 INFO L470 AbstractCegarLoop]: Abstraction has 13220 states and 37356 transitions. [2022-03-01 15:43:34,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 13220 states and 37356 transitions. [2022-03-01 15:43:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:34,944 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:34,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:34,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-01 15:43:34,945 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -664521334, now seen corresponding path program 72 times [2022-03-01 15:43:34,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:34,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589105585] [2022-03-01 15:43:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:35,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:35,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589105585] [2022-03-01 15:43:35,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589105585] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:35,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:35,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:35,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942182478] [2022-03-01 15:43:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:35,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:35,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:35,323 INFO L87 Difference]: Start difference. First operand 13220 states and 37356 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:35,867 INFO L93 Difference]: Finished difference Result 18903 states and 53575 transitions. [2022-03-01 15:43:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:43:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:35,900 INFO L225 Difference]: With dead ends: 18903 [2022-03-01 15:43:35,900 INFO L226 Difference]: Without dead ends: 18903 [2022-03-01 15:43:35,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:43:35,900 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1070 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:35,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3060 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2022-03-01 15:43:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 13220. [2022-03-01 15:43:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13220 states, 13219 states have (on average 2.8259323700733794) internal successors, (37356), 13219 states have internal predecessors, (37356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13220 states to 13220 states and 37356 transitions. [2022-03-01 15:43:36,115 INFO L78 Accepts]: Start accepts. Automaton has 13220 states and 37356 transitions. Word has length 177 [2022-03-01 15:43:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:36,115 INFO L470 AbstractCegarLoop]: Abstraction has 13220 states and 37356 transitions. [2022-03-01 15:43:36,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13220 states and 37356 transitions. [2022-03-01 15:43:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:36,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:36,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:36,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-03-01 15:43:36,133 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash 957238336, now seen corresponding path program 61 times [2022-03-01 15:43:36,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:36,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715662533] [2022-03-01 15:43:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:36,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:36,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715662533] [2022-03-01 15:43:36,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715662533] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:36,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:36,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:36,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737381137] [2022-03-01 15:43:36,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:36,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:36,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:36,452 INFO L87 Difference]: Start difference. First operand 13220 states and 37356 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:37,008 INFO L93 Difference]: Finished difference Result 19127 states and 54223 transitions. [2022-03-01 15:43:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 15:43:37,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:37,041 INFO L225 Difference]: With dead ends: 19127 [2022-03-01 15:43:37,041 INFO L226 Difference]: Without dead ends: 19127 [2022-03-01 15:43:37,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:43:37,041 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1071 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:37,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 2801 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19127 states. [2022-03-01 15:43:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19127 to 13212. [2022-03-01 15:43:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13211 states have (on average 2.824767239421694) internal successors, (37318), 13211 states have internal predecessors, (37318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 37318 transitions. [2022-03-01 15:43:37,255 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 37318 transitions. Word has length 177 [2022-03-01 15:43:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:37,255 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 37318 transitions. [2022-03-01 15:43:37,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 37318 transitions. [2022-03-01 15:43:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:37,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:37,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:37,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-03-01 15:43:37,273 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1995767108, now seen corresponding path program 73 times [2022-03-01 15:43:37,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:37,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343493990] [2022-03-01 15:43:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:37,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:37,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343493990] [2022-03-01 15:43:37,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343493990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:37,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:37,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 15:43:37,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618134103] [2022-03-01 15:43:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:37,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 15:43:37,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 15:43:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-01 15:43:37,601 INFO L87 Difference]: Start difference. First operand 13212 states and 37318 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:38,212 INFO L93 Difference]: Finished difference Result 19311 states and 54721 transitions. [2022-03-01 15:43:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:38,213 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:38,243 INFO L225 Difference]: With dead ends: 19311 [2022-03-01 15:43:38,244 INFO L226 Difference]: Without dead ends: 19311 [2022-03-01 15:43:38,244 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 [2022-03-01 15:43:38,244 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 894 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:38,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 3192 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19311 states. [2022-03-01 15:43:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19311 to 13212. [2022-03-01 15:43:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13211 states have (on average 2.824767239421694) internal successors, (37318), 13211 states have internal predecessors, (37318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 37318 transitions. [2022-03-01 15:43:38,463 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 37318 transitions. Word has length 177 [2022-03-01 15:43:38,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:38,463 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 37318 transitions. [2022-03-01 15:43:38,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 37318 transitions. [2022-03-01 15:43:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:38,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:38,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:38,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-03-01 15:43:38,481 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash -846132868, now seen corresponding path program 62 times [2022-03-01 15:43:38,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:38,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758887122] [2022-03-01 15:43:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:38,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:38,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758887122] [2022-03-01 15:43:38,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758887122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:38,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:38,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:38,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491773613] [2022-03-01 15:43:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:38,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:38,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:38,823 INFO L87 Difference]: Start difference. First operand 13212 states and 37318 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:39,446 INFO L93 Difference]: Finished difference Result 19223 states and 54487 transitions. [2022-03-01 15:43:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 15:43:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:39,477 INFO L225 Difference]: With dead ends: 19223 [2022-03-01 15:43:39,478 INFO L226 Difference]: Without dead ends: 19223 [2022-03-01 15:43:39,478 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 [2022-03-01 15:43:39,478 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1015 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:39,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 2797 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19223 states. [2022-03-01 15:43:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19223 to 13244. [2022-03-01 15:43:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 13243 states have (on average 2.824586574039115) internal successors, (37406), 13243 states have internal predecessors, (37406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 37406 transitions. [2022-03-01 15:43:39,690 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 37406 transitions. Word has length 177 [2022-03-01 15:43:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:39,690 INFO L470 AbstractCegarLoop]: Abstraction has 13244 states and 37406 transitions. [2022-03-01 15:43:39,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 37406 transitions. [2022-03-01 15:43:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:39,707 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:39,707 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] [2022-03-01 15:43:39,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-01 15:43:39,708 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1354471006, now seen corresponding path program 63 times [2022-03-01 15:43:39,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:39,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438110563] [2022-03-01 15:43:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:40,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:40,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438110563] [2022-03-01 15:43:40,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438110563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:40,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:40,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:40,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663236894] [2022-03-01 15:43:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:40,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:40,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:40,053 INFO L87 Difference]: Start difference. First operand 13244 states and 37406 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:40,797 INFO L93 Difference]: Finished difference Result 20087 states and 56959 transitions. [2022-03-01 15:43:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:43:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:40,830 INFO L225 Difference]: With dead ends: 20087 [2022-03-01 15:43:40,830 INFO L226 Difference]: Without dead ends: 20087 [2022-03-01 15:43:40,830 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 [2022-03-01 15:43:40,831 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 838 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:40,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 3732 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:43:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20087 states. [2022-03-01 15:43:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20087 to 13188. [2022-03-01 15:43:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13187 states have (on average 2.823083339652688) internal successors, (37228), 13187 states have internal predecessors, (37228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 37228 transitions. [2022-03-01 15:43:41,055 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 37228 transitions. Word has length 177 [2022-03-01 15:43:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:41,055 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 37228 transitions. [2022-03-01 15:43:41,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 37228 transitions. [2022-03-01 15:43:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:41,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:41,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:41,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-01 15:43:41,073 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:41,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:41,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1320257190, now seen corresponding path program 74 times [2022-03-01 15:43:41,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:41,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719815863] [2022-03-01 15:43:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:41,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:41,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:41,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719815863] [2022-03-01 15:43:41,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719815863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:41,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:41,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 15:43:41,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707596459] [2022-03-01 15:43:41,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:41,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:43:41,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:43:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:43:41,340 INFO L87 Difference]: Start difference. First operand 13188 states and 37228 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:41,986 INFO L93 Difference]: Finished difference Result 19370 states and 54329 transitions. [2022-03-01 15:43:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 15:43:41,986 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:42,018 INFO L225 Difference]: With dead ends: 19370 [2022-03-01 15:43:42,018 INFO L226 Difference]: Without dead ends: 19370 [2022-03-01 15:43:42,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:43:42,019 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1169 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:42,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 3554 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19370 states. [2022-03-01 15:43:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19370 to 12780. [2022-03-01 15:43:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12780 states, 12779 states have (on average 2.807731434384537) internal successors, (35880), 12779 states have internal predecessors, (35880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12780 states to 12780 states and 35880 transitions. [2022-03-01 15:43:42,236 INFO L78 Accepts]: Start accepts. Automaton has 12780 states and 35880 transitions. Word has length 177 [2022-03-01 15:43:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:42,236 INFO L470 AbstractCegarLoop]: Abstraction has 12780 states and 35880 transitions. [2022-03-01 15:43:42,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 12780 states and 35880 transitions. [2022-03-01 15:43:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:42,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:42,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:42,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-01 15:43:42,253 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1967543744, now seen corresponding path program 64 times [2022-03-01 15:43:42,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:42,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625371566] [2022-03-01 15:43:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:42,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:42,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:42,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625371566] [2022-03-01 15:43:42,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625371566] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:43:42,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637620622] [2022-03-01 15:43:42,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:43:42,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:42,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:43:42,510 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:43:42,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-01 15:43:42,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:43:42,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:43:42,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-01 15:43:42,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:43:43,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:43:43,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:43,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:43,650 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 15:43:43,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-03-01 15:43:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:43:43,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:43:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:44,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637620622] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:43:44,049 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:43:44,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-03-01 15:43:44,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614433397] [2022-03-01 15:43:44,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:43:44,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 15:43:44,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 15:43:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:43:44,050 INFO L87 Difference]: Start difference. First operand 12780 states and 35880 transitions. Second operand has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:46,277 INFO L93 Difference]: Finished difference Result 19272 states and 54024 transitions. [2022-03-01 15:43:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 15:43:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:46,312 INFO L225 Difference]: With dead ends: 19272 [2022-03-01 15:43:46,312 INFO L226 Difference]: Without dead ends: 19272 [2022-03-01 15:43:46,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1155, Invalid=5165, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 15:43:46,313 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 3025 mSDsluCounter, 8387 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3025 SdHoareTripleChecker+Valid, 8700 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:46,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3025 Valid, 8700 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2125 Invalid, 0 Unknown, 347 Unchecked, 0.8s Time] [2022-03-01 15:43:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19272 states. [2022-03-01 15:43:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19272 to 12528. [2022-03-01 15:43:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12528 states, 12527 states have (on average 2.80665761954179) internal successors, (35159), 12527 states have internal predecessors, (35159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12528 states to 12528 states and 35159 transitions. [2022-03-01 15:43:46,517 INFO L78 Accepts]: Start accepts. Automaton has 12528 states and 35159 transitions. Word has length 177 [2022-03-01 15:43:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:46,518 INFO L470 AbstractCegarLoop]: Abstraction has 12528 states and 35159 transitions. [2022-03-01 15:43:46,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12528 states and 35159 transitions. [2022-03-01 15:43:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 15:43:46,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:46,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:46,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-01 15:43:46,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:46,735 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1704062446, now seen corresponding path program 48 times [2022-03-01 15:43:46,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:46,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568187072] [2022-03-01 15:43:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:47,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:47,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568187072] [2022-03-01 15:43:47,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568187072] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:43:47,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910639229] [2022-03-01 15:43:47,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:43:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:43:47,062 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:43:47,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-01 15:43:47,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 15:43:47,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:43:47,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-01 15:43:47,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:43:47,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:43:47,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:47,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:47,958 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-01 15:43:47,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-01 15:43:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:43:48,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:43:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:49,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910639229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:43:49,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:43:49,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 9] total 42 [2022-03-01 15:43:49,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573739868] [2022-03-01 15:43:49,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:43:49,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 15:43:49,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 15:43:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1529, Unknown=1, NotChecked=0, Total=1722 [2022-03-01 15:43:49,327 INFO L87 Difference]: Start difference. First operand 12528 states and 35159 transitions. Second operand has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:51,685 INFO L93 Difference]: Finished difference Result 21625 states and 61020 transitions. [2022-03-01 15:43:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 15:43:51,686 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-01 15:43:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:51,723 INFO L225 Difference]: With dead ends: 21625 [2022-03-01 15:43:51,723 INFO L226 Difference]: Without dead ends: 21625 [2022-03-01 15:43:51,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1226, Invalid=4779, Unknown=1, NotChecked=0, Total=6006 [2022-03-01 15:43:51,724 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 2051 mSDsluCounter, 7266 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 7546 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:51,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 7546 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2444 Invalid, 0 Unknown, 331 Unchecked, 0.9s Time] [2022-03-01 15:43:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21625 states. [2022-03-01 15:43:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21625 to 12072. [2022-03-01 15:43:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12072 states, 12071 states have (on average 2.828514621820893) internal successors, (34143), 12071 states have internal predecessors, (34143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12072 states to 12072 states and 34143 transitions. [2022-03-01 15:43:51,955 INFO L78 Accepts]: Start accepts. Automaton has 12072 states and 34143 transitions. Word has length 177 [2022-03-01 15:43:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:51,955 INFO L470 AbstractCegarLoop]: Abstraction has 12072 states and 34143 transitions. [2022-03-01 15:43:51,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12072 states and 34143 transitions. [2022-03-01 15:43:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-01 15:43:51,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:51,973 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:51,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-01 15:43:52,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-03-01 15:43:52,174 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:52,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 151786433, now seen corresponding path program 2 times [2022-03-01 15:43:52,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:52,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386275333] [2022-03-01 15:43:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:52,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:52,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:52,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386275333] [2022-03-01 15:43:52,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386275333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:43:52,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889883467] [2022-03-01 15:43:52,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:43:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:43:52,363 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:43:52,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-01 15:43:52,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-01 15:43:52,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:43:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 15:43:52,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:43:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-01 15:43:53,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:43:53,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889883467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:53,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:43:53,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-03-01 15:43:53,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162606566] [2022-03-01 15:43:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:53,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 15:43:53,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:53,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 15:43:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-01 15:43:53,039 INFO L87 Difference]: Start difference. First operand 12072 states and 34143 transitions. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:53,457 INFO L93 Difference]: Finished difference Result 12807 states and 35812 transitions. [2022-03-01 15:43:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 15:43:53,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2022-03-01 15:43:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:53,478 INFO L225 Difference]: With dead ends: 12807 [2022-03-01 15:43:53,478 INFO L226 Difference]: Without dead ends: 12698 [2022-03-01 15:43:53,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 15:43:53,479 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 116 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:53,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1402 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2022-03-01 15:43:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 7124. [2022-03-01 15:43:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 2.7558612943984278) internal successors, (19630), 7123 states have internal predecessors, (19630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 19630 transitions. [2022-03-01 15:43:53,582 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 19630 transitions. Word has length 180 [2022-03-01 15:43:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:53,582 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 19630 transitions. [2022-03-01 15:43:53,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 19630 transitions. [2022-03-01 15:43:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:53,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:53,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:53,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-01 15:43:53,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-03-01 15:43:53,795 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1442899840, now seen corresponding path program 1 times [2022-03-01 15:43:53,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:53,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052279150] [2022-03-01 15:43:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:54,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:54,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052279150] [2022-03-01 15:43:54,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052279150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:54,085 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:54,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:43:54,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689459568] [2022-03-01 15:43:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:54,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:43:54,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:43:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:43:54,086 INFO L87 Difference]: Start difference. First operand 7124 states and 19630 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:54,698 INFO L93 Difference]: Finished difference Result 13271 states and 36321 transitions. [2022-03-01 15:43:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 15:43:54,698 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:54,717 INFO L225 Difference]: With dead ends: 13271 [2022-03-01 15:43:54,717 INFO L226 Difference]: Without dead ends: 13271 [2022-03-01 15:43:54,718 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 [2022-03-01 15:43:54,718 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1050 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:54,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3534 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:43:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2022-03-01 15:43:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 7880. [2022-03-01 15:43:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 7879 states have (on average 2.7583449676354865) internal successors, (21733), 7879 states have internal predecessors, (21733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 21733 transitions. [2022-03-01 15:43:54,844 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 21733 transitions. Word has length 181 [2022-03-01 15:43:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:54,844 INFO L470 AbstractCegarLoop]: Abstraction has 7880 states and 21733 transitions. [2022-03-01 15:43:54,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 21733 transitions. [2022-03-01 15:43:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:54,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:54,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:54,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-03-01 15:43:54,853 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:54,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1693882528, now seen corresponding path program 1 times [2022-03-01 15:43:54,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:54,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722818053] [2022-03-01 15:43:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:54,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:54,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722818053] [2022-03-01 15:43:54,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722818053] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:54,920 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:54,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:54,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382590447] [2022-03-01 15:43:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:54,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:54,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:54,921 INFO L87 Difference]: Start difference. First operand 7880 states and 21733 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:55,052 INFO L93 Difference]: Finished difference Result 10048 states and 27653 transitions. [2022-03-01 15:43:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:43:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:55,068 INFO L225 Difference]: With dead ends: 10048 [2022-03-01 15:43:55,068 INFO L226 Difference]: Without dead ends: 9991 [2022-03-01 15:43:55,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:43:55,069 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 203 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:55,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1615 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2022-03-01 15:43:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 9164. [2022-03-01 15:43:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.768852995743752) internal successors, (25371), 9163 states have internal predecessors, (25371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 25371 transitions. [2022-03-01 15:43:55,186 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 25371 transitions. Word has length 181 [2022-03-01 15:43:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:55,186 INFO L470 AbstractCegarLoop]: Abstraction has 9164 states and 25371 transitions. [2022-03-01 15:43:55,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 25371 transitions. [2022-03-01 15:43:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:55,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:55,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:55,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-03-01 15:43:55,197 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1303549216, now seen corresponding path program 2 times [2022-03-01 15:43:55,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:55,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379929878] [2022-03-01 15:43:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:55,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:55,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379929878] [2022-03-01 15:43:55,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379929878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:55,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:55,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:55,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323302378] [2022-03-01 15:43:55,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:55,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:55,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:55,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:55,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:55,272 INFO L87 Difference]: Start difference. First operand 9164 states and 25371 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:55,401 INFO L93 Difference]: Finished difference Result 9959 states and 27465 transitions. [2022-03-01 15:43:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:43:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:55,416 INFO L225 Difference]: With dead ends: 9959 [2022-03-01 15:43:55,416 INFO L226 Difference]: Without dead ends: 9902 [2022-03-01 15:43:55,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:43:55,416 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 87 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:55,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1693 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2022-03-01 15:43:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9203. [2022-03-01 15:43:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 2.768528580743317) internal successors, (25476), 9202 states have internal predecessors, (25476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 25476 transitions. [2022-03-01 15:43:55,527 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 25476 transitions. Word has length 181 [2022-03-01 15:43:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:55,527 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 25476 transitions. [2022-03-01 15:43:55,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 25476 transitions. [2022-03-01 15:43:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:55,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:55,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:55,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-03-01 15:43:55,538 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:55,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1045782252, now seen corresponding path program 3 times [2022-03-01 15:43:55,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:55,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178753883] [2022-03-01 15:43:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:55,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:55,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178753883] [2022-03-01 15:43:55,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178753883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:55,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:55,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:55,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892828833] [2022-03-01 15:43:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:55,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:55,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:55,601 INFO L87 Difference]: Start difference. First operand 9203 states and 25476 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:55,741 INFO L93 Difference]: Finished difference Result 9970 states and 27502 transitions. [2022-03-01 15:43:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:43:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:55,755 INFO L225 Difference]: With dead ends: 9970 [2022-03-01 15:43:55,755 INFO L226 Difference]: Without dead ends: 9913 [2022-03-01 15:43:55,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:43:55,756 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 86 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:55,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1538 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2022-03-01 15:43:55,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 9203. [2022-03-01 15:43:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 2.768528580743317) internal successors, (25476), 9202 states have internal predecessors, (25476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 25476 transitions. [2022-03-01 15:43:55,867 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 25476 transitions. Word has length 181 [2022-03-01 15:43:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:55,867 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 25476 transitions. [2022-03-01 15:43:55,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 25476 transitions. [2022-03-01 15:43:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:55,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:55,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:55,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-03-01 15:43:55,878 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash -964256132, now seen corresponding path program 4 times [2022-03-01 15:43:55,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:55,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219755913] [2022-03-01 15:43:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:55,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:55,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:55,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219755913] [2022-03-01 15:43:55,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219755913] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:55,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:55,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:55,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702761981] [2022-03-01 15:43:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:55,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:55,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:55,947 INFO L87 Difference]: Start difference. First operand 9203 states and 25476 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:56,125 INFO L93 Difference]: Finished difference Result 11581 states and 31830 transitions. [2022-03-01 15:43:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:43:56,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:56,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:56,142 INFO L225 Difference]: With dead ends: 11581 [2022-03-01 15:43:56,142 INFO L226 Difference]: Without dead ends: 11524 [2022-03-01 15:43:56,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:43:56,143 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 216 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:56,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 1992 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11524 states. [2022-03-01 15:43:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11524 to 10442. [2022-03-01 15:43:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 2.763528397663059) internal successors, (28854), 10441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 28854 transitions. [2022-03-01 15:43:56,281 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 28854 transitions. Word has length 181 [2022-03-01 15:43:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:56,281 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 28854 transitions. [2022-03-01 15:43:56,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 28854 transitions. [2022-03-01 15:43:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:56,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:56,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:56,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-03-01 15:43:56,294 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1597101116, now seen corresponding path program 5 times [2022-03-01 15:43:56,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:56,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698294268] [2022-03-01 15:43:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:56,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:56,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698294268] [2022-03-01 15:43:56,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698294268] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:56,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:56,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:56,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323265669] [2022-03-01 15:43:56,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:56,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:56,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:56,362 INFO L87 Difference]: Start difference. First operand 10442 states and 28854 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:56,510 INFO L93 Difference]: Finished difference Result 11261 states and 31032 transitions. [2022-03-01 15:43:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:43:56,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:56,526 INFO L225 Difference]: With dead ends: 11261 [2022-03-01 15:43:56,527 INFO L226 Difference]: Without dead ends: 11204 [2022-03-01 15:43:56,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:43:56,527 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:56,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1583 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2022-03-01 15:43:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 10446. [2022-03-01 15:43:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10446 states, 10445 states have (on average 2.7635232168501673) internal successors, (28865), 10445 states have internal predecessors, (28865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10446 states to 10446 states and 28865 transitions. [2022-03-01 15:43:56,656 INFO L78 Accepts]: Start accepts. Automaton has 10446 states and 28865 transitions. Word has length 181 [2022-03-01 15:43:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:56,657 INFO L470 AbstractCegarLoop]: Abstraction has 10446 states and 28865 transitions. [2022-03-01 15:43:56,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 10446 states and 28865 transitions. [2022-03-01 15:43:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:56,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:56,669 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] [2022-03-01 15:43:56,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-01 15:43:56,669 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash 348534712, now seen corresponding path program 6 times [2022-03-01 15:43:56,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:56,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882117172] [2022-03-01 15:43:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:56,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:56,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:56,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882117172] [2022-03-01 15:43:56,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882117172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:56,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:56,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:56,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146746332] [2022-03-01 15:43:56,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:56,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:56,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:56,736 INFO L87 Difference]: Start difference. First operand 10446 states and 28865 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:56,861 INFO L93 Difference]: Finished difference Result 11201 states and 30876 transitions. [2022-03-01 15:43:56,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:43:56,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:56,877 INFO L225 Difference]: With dead ends: 11201 [2022-03-01 15:43:56,877 INFO L226 Difference]: Without dead ends: 11144 [2022-03-01 15:43:56,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:43:56,878 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 85 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:56,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1363 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11144 states. [2022-03-01 15:43:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11144 to 10442. [2022-03-01 15:43:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 2.763528397663059) internal successors, (28854), 10441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 28854 transitions. [2022-03-01 15:43:57,012 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 28854 transitions. Word has length 181 [2022-03-01 15:43:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:57,012 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 28854 transitions. [2022-03-01 15:43:57,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 28854 transitions. [2022-03-01 15:43:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:57,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:57,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:57,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-01 15:43:57,025 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -550249376, now seen corresponding path program 1 times [2022-03-01 15:43:57,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:57,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616916870] [2022-03-01 15:43:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:43:57,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:57,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616916870] [2022-03-01 15:43:57,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616916870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:43:57,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:43:57,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:43:57,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136358024] [2022-03-01 15:43:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:43:57,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:43:57,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:43:57,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:43:57,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:43:57,107 INFO L87 Difference]: Start difference. First operand 10442 states and 28854 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:43:57,268 INFO L93 Difference]: Finished difference Result 11560 states and 31789 transitions. [2022-03-01 15:43:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:43:57,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:43:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:43:57,285 INFO L225 Difference]: With dead ends: 11560 [2022-03-01 15:43:57,285 INFO L226 Difference]: Without dead ends: 11509 [2022-03-01 15:43:57,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:43:57,286 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 203 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:43:57,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1380 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:43:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2022-03-01 15:43:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 10478. [2022-03-01 15:43:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10477 states have (on average 2.7634819127612866) internal successors, (28953), 10477 states have internal predecessors, (28953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 28953 transitions. [2022-03-01 15:43:57,422 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 28953 transitions. Word has length 181 [2022-03-01 15:43:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:43:57,422 INFO L470 AbstractCegarLoop]: Abstraction has 10478 states and 28953 transitions. [2022-03-01 15:43:57,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:43:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 28953 transitions. [2022-03-01 15:43:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:43:57,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:43:57,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:43:57,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-03-01 15:43:57,434 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:43:57,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:43:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1708434304, now seen corresponding path program 1 times [2022-03-01 15:43:57,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:43:57,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491532653] [2022-03-01 15:43:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:57,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:43:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:43:58,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:43:58,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491532653] [2022-03-01 15:43:58,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491532653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:43:58,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291329621] [2022-03-01 15:43:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:43:58,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:43:58,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:43:58,459 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:43:58,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-01 15:43:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:43:58,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:43:58,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:43:58,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:58,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:43:59,226 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:43:59,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:43:59,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:59,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:43:59,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:00,342 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:44:00,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-01 15:44:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:00,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:44:01,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5080 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5080))) (let ((.cse4 (select .cse7 ~get2~0.base)) (.cse5 (select .cse7 c_~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse5 (+ c_~get1~0.offset .cse6))) (.cse2 (select .cse4 (+ c_~get2~0.offset .cse6))) (.cse1 (select .cse5 c_~get1~0.offset)) (.cse0 (select .cse4 c_~get2~0.offset))) (or (< .cse0 .cse1) (= .cse2 .cse3) (<= (+ .cse3 1) .cse2) (= .cse1 .cse0)))))) is different from false [2022-03-01 15:44:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:01,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291329621] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:01,376 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:44:01,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [35, 30] total 74 [2022-03-01 15:44:01,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28750281] [2022-03-01 15:44:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:01,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:44:01,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:44:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=4918, Unknown=1, NotChecked=142, Total=5402 [2022-03-01 15:44:01,377 INFO L87 Difference]: Start difference. First operand 10478 states and 28953 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:02,914 INFO L93 Difference]: Finished difference Result 14022 states and 38544 transitions. [2022-03-01 15:44:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:44:02,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:02,936 INFO L225 Difference]: With dead ends: 14022 [2022-03-01 15:44:02,936 INFO L226 Difference]: Without dead ends: 14022 [2022-03-01 15:44:02,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 322 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=481, Invalid=6494, Unknown=1, NotChecked=164, Total=7140 [2022-03-01 15:44:02,937 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 486 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 916 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:02,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 4227 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 834 Invalid, 0 Unknown, 916 Unchecked, 0.4s Time] [2022-03-01 15:44:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2022-03-01 15:44:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 10978. [2022-03-01 15:44:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 10977 states have (on average 2.7604081260818076) internal successors, (30301), 10977 states have internal predecessors, (30301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 30301 transitions. [2022-03-01 15:44:03,092 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 30301 transitions. Word has length 181 [2022-03-01 15:44:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:03,093 INFO L470 AbstractCegarLoop]: Abstraction has 10978 states and 30301 transitions. [2022-03-01 15:44:03,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 30301 transitions. [2022-03-01 15:44:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:03,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:03,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:03,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:03,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:03,307 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash -287180576, now seen corresponding path program 2 times [2022-03-01 15:44:03,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:03,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103914915] [2022-03-01 15:44:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:03,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:03,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103914915] [2022-03-01 15:44:03,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103914915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:03,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:03,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:44:03,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290661071] [2022-03-01 15:44:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:03,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:44:03,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:44:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:44:03,383 INFO L87 Difference]: Start difference. First operand 10978 states and 30301 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:03,533 INFO L93 Difference]: Finished difference Result 11868 states and 32660 transitions. [2022-03-01 15:44:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:44:03,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:03,550 INFO L225 Difference]: With dead ends: 11868 [2022-03-01 15:44:03,551 INFO L226 Difference]: Without dead ends: 11817 [2022-03-01 15:44:03,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:44:03,551 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 87 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:03,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1713 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:44:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2022-03-01 15:44:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 10982. [2022-03-01 15:44:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10982 states, 10981 states have (on average 2.76040433476004) internal successors, (30312), 10981 states have internal predecessors, (30312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 30312 transitions. [2022-03-01 15:44:03,702 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 30312 transitions. Word has length 181 [2022-03-01 15:44:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:03,702 INFO L470 AbstractCegarLoop]: Abstraction has 10982 states and 30312 transitions. [2022-03-01 15:44:03,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 30312 transitions. [2022-03-01 15:44:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:03,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:03,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:03,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-03-01 15:44:03,716 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1658455252, now seen corresponding path program 3 times [2022-03-01 15:44:03,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:03,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794942601] [2022-03-01 15:44:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:03,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:03,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794942601] [2022-03-01 15:44:03,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794942601] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:03,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:03,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:44:03,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350876398] [2022-03-01 15:44:03,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:03,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:44:03,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:44:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:44:03,801 INFO L87 Difference]: Start difference. First operand 10982 states and 30312 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:03,961 INFO L93 Difference]: Finished difference Result 11879 states and 32697 transitions. [2022-03-01 15:44:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:44:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:03,979 INFO L225 Difference]: With dead ends: 11879 [2022-03-01 15:44:03,979 INFO L226 Difference]: Without dead ends: 11828 [2022-03-01 15:44:03,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:44:03,979 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:03,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1767 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:44:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2022-03-01 15:44:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 10978. [2022-03-01 15:44:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 10977 states have (on average 2.7604081260818076) internal successors, (30301), 10977 states have internal predecessors, (30301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 30301 transitions. [2022-03-01 15:44:04,116 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 30301 transitions. Word has length 181 [2022-03-01 15:44:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:04,116 INFO L470 AbstractCegarLoop]: Abstraction has 10978 states and 30301 transitions. [2022-03-01 15:44:04,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 30301 transitions. [2022-03-01 15:44:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:04,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:04,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:04,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-03-01 15:44:04,129 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1851109188, now seen corresponding path program 4 times [2022-03-01 15:44:04,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:04,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322050193] [2022-03-01 15:44:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:04,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:04,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322050193] [2022-03-01 15:44:04,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322050193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:04,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:04,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:44:04,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680454536] [2022-03-01 15:44:04,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:04,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:44:04,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:44:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:44:04,204 INFO L87 Difference]: Start difference. First operand 10978 states and 30301 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:04,362 INFO L93 Difference]: Finished difference Result 12390 states and 34035 transitions. [2022-03-01 15:44:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 15:44:04,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:04,384 INFO L225 Difference]: With dead ends: 12390 [2022-03-01 15:44:04,384 INFO L226 Difference]: Without dead ends: 12339 [2022-03-01 15:44:04,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:44:04,384 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 209 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:04,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1294 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:44:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12339 states. [2022-03-01 15:44:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12339 to 11017. [2022-03-01 15:44:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 2.760167029774873) internal successors, (30406), 11016 states have internal predecessors, (30406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 30406 transitions. [2022-03-01 15:44:04,530 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 30406 transitions. Word has length 181 [2022-03-01 15:44:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:04,530 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 30406 transitions. [2022-03-01 15:44:04,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,530 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 30406 transitions. [2022-03-01 15:44:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:04,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:04,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:04,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-01 15:44:04,543 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2074947418, now seen corresponding path program 5 times [2022-03-01 15:44:04,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:04,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056107445] [2022-03-01 15:44:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:04,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:04,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056107445] [2022-03-01 15:44:04,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056107445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:04,610 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:04,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:44:04,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629649719] [2022-03-01 15:44:04,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:04,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:44:04,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:04,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:44:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:44:04,611 INFO L87 Difference]: Start difference. First operand 11017 states and 30406 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:04,750 INFO L93 Difference]: Finished difference Result 11958 states and 32930 transitions. [2022-03-01 15:44:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 15:44:04,751 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 [2022-03-01 15:44:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:04,768 INFO L225 Difference]: With dead ends: 11958 [2022-03-01 15:44:04,768 INFO L226 Difference]: Without dead ends: 11907 [2022-03-01 15:44:04,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:44:04,769 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 103 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:04,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1569 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:44:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11907 states. [2022-03-01 15:44:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11907 to 11021. [2022-03-01 15:44:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11020 states have (on average 2.76016333938294) internal successors, (30417), 11020 states have internal predecessors, (30417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 30417 transitions. [2022-03-01 15:44:04,907 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 30417 transitions. Word has length 181 [2022-03-01 15:44:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:04,907 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 30417 transitions. [2022-03-01 15:44:04,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 30417 transitions. [2022-03-01 15:44:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:04,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:04,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:04,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-01 15:44:04,920 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -129311590, now seen corresponding path program 6 times [2022-03-01 15:44:04,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:04,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109167900] [2022-03-01 15:44:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:04,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:04,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109167900] [2022-03-01 15:44:04,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109167900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:04,986 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:04,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 15:44:04,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634088890] [2022-03-01 15:44:04,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:04,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 15:44:04,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 15:44:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:44:04,987 INFO L87 Difference]: Start difference. First operand 11021 states and 30417 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:05,131 INFO L93 Difference]: Finished difference Result 11898 states and 32774 transitions. [2022-03-01 15:44:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:44:05,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:05,149 INFO L225 Difference]: With dead ends: 11898 [2022-03-01 15:44:05,149 INFO L226 Difference]: Without dead ends: 11847 [2022-03-01 15:44:05,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-01 15:44:05,149 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 86 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:05,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1757 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:44:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2022-03-01 15:44:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 11017. [2022-03-01 15:44:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 2.760167029774873) internal successors, (30406), 11016 states have internal predecessors, (30406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 30406 transitions. [2022-03-01 15:44:05,295 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 30406 transitions. Word has length 181 [2022-03-01 15:44:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:05,295 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 30406 transitions. [2022-03-01 15:44:05,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 30406 transitions. [2022-03-01 15:44:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:05,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:05,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:05,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-01 15:44:05,308 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1830773360, now seen corresponding path program 2 times [2022-03-01 15:44:05,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:05,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488986435] [2022-03-01 15:44:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:05,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:06,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:06,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488986435] [2022-03-01 15:44:06,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488986435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:06,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286901820] [2022-03-01 15:44:06,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:44:06,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:06,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:06,191 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:06,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-01 15:44:06,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-01 15:44:06,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:06,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-01 15:44:06,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:07,399 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:07,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-01 15:44:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:07,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:44:07,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286901820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:07,441 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:44:07,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 47 [2022-03-01 15:44:07,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389759200] [2022-03-01 15:44:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:07,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 15:44:07,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 15:44:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:44:07,442 INFO L87 Difference]: Start difference. First operand 11017 states and 30406 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:09,256 INFO L93 Difference]: Finished difference Result 19100 states and 52356 transitions. [2022-03-01 15:44:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 15:44:09,257 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:09,286 INFO L225 Difference]: With dead ends: 19100 [2022-03-01 15:44:09,286 INFO L226 Difference]: Without dead ends: 19100 [2022-03-01 15:44:09,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=927, Invalid=5715, Unknown=0, NotChecked=0, Total=6642 [2022-03-01 15:44:09,287 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1269 mSDsluCounter, 5067 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:09,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 5406 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1480 Invalid, 0 Unknown, 251 Unchecked, 0.6s Time] [2022-03-01 15:44:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19100 states. [2022-03-01 15:44:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19100 to 11360. [2022-03-01 15:44:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11360 states, 11359 states have (on average 2.7644158816797253) internal successors, (31401), 11359 states have internal predecessors, (31401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11360 states to 11360 states and 31401 transitions. [2022-03-01 15:44:09,485 INFO L78 Accepts]: Start accepts. Automaton has 11360 states and 31401 transitions. Word has length 181 [2022-03-01 15:44:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:09,485 INFO L470 AbstractCegarLoop]: Abstraction has 11360 states and 31401 transitions. [2022-03-01 15:44:09,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 11360 states and 31401 transitions. [2022-03-01 15:44:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:09,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:09,499 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, 1, 1, 1, 1] [2022-03-01 15:44:09,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:09,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2022-03-01 15:44:09,700 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:09,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:09,700 INFO L85 PathProgramCache]: Analyzing trace with hash -909661620, now seen corresponding path program 2 times [2022-03-01 15:44:09,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:09,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716168476] [2022-03-01 15:44:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:09,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:09,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:09,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716168476] [2022-03-01 15:44:09,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716168476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:09,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:09,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:44:09,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300979588] [2022-03-01 15:44:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:09,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:44:09,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:44:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:44:09,979 INFO L87 Difference]: Start difference. First operand 11360 states and 31401 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:10,627 INFO L93 Difference]: Finished difference Result 18016 states and 49747 transitions. [2022-03-01 15:44:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 15:44:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:10,655 INFO L225 Difference]: With dead ends: 18016 [2022-03-01 15:44:10,655 INFO L226 Difference]: Without dead ends: 18016 [2022-03-01 15:44:10,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 15:44:10,655 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1093 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:10,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 3217 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:44:10,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18016 states. [2022-03-01 15:44:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18016 to 11364. [2022-03-01 15:44:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 11363 states have (on average 2.764762826718296) internal successors, (31416), 11363 states have internal predecessors, (31416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 31416 transitions. [2022-03-01 15:44:10,841 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 31416 transitions. Word has length 181 [2022-03-01 15:44:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:10,841 INFO L470 AbstractCegarLoop]: Abstraction has 11364 states and 31416 transitions. [2022-03-01 15:44:10,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 31416 transitions. [2022-03-01 15:44:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:10,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:10,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:10,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-03-01 15:44:10,854 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 185790988, now seen corresponding path program 3 times [2022-03-01 15:44:10,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:10,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28910426] [2022-03-01 15:44:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:11,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:11,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28910426] [2022-03-01 15:44:11,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28910426] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:11,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699078652] [2022-03-01 15:44:11,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:44:11,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:11,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:11,816 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:11,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-01 15:44:12,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-01 15:44:12,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:12,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-01 15:44:12,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:13,055 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:13,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-01 15:44:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:13,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:44:13,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699078652] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:13,097 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:44:13,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 48 [2022-03-01 15:44:13,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76648160] [2022-03-01 15:44:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:13,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 15:44:13,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 15:44:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:44:13,098 INFO L87 Difference]: Start difference. First operand 11364 states and 31416 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:14,476 INFO L93 Difference]: Finished difference Result 17980 states and 49566 transitions. [2022-03-01 15:44:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 15:44:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:14,505 INFO L225 Difference]: With dead ends: 17980 [2022-03-01 15:44:14,506 INFO L226 Difference]: Without dead ends: 17980 [2022-03-01 15:44:14,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=718, Invalid=4982, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:44:14,507 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1571 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:14,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 4486 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1145 Invalid, 0 Unknown, 242 Unchecked, 0.5s Time] [2022-03-01 15:44:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17980 states. [2022-03-01 15:44:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17980 to 11365. [2022-03-01 15:44:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11365 states, 11364 states have (on average 2.7647835269271384) internal successors, (31419), 11364 states have internal predecessors, (31419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11365 states to 11365 states and 31419 transitions. [2022-03-01 15:44:14,699 INFO L78 Accepts]: Start accepts. Automaton has 11365 states and 31419 transitions. Word has length 181 [2022-03-01 15:44:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:14,699 INFO L470 AbstractCegarLoop]: Abstraction has 11365 states and 31419 transitions. [2022-03-01 15:44:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 11365 states and 31419 transitions. [2022-03-01 15:44:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:14,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:14,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:14,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:14,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:14,914 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1218567710, now seen corresponding path program 3 times [2022-03-01 15:44:14,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:14,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195833793] [2022-03-01 15:44:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:14,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:15,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:15,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195833793] [2022-03-01 15:44:15,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195833793] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:15,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:15,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:44:15,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43344539] [2022-03-01 15:44:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:15,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:44:15,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:44:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:44:15,170 INFO L87 Difference]: Start difference. First operand 11365 states and 31419 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:15,723 INFO L93 Difference]: Finished difference Result 17744 states and 48934 transitions. [2022-03-01 15:44:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:44:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:15,751 INFO L225 Difference]: With dead ends: 17744 [2022-03-01 15:44:15,751 INFO L226 Difference]: Without dead ends: 17744 [2022-03-01 15:44:15,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:44:15,752 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1312 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:15,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 2905 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:44:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17744 states. [2022-03-01 15:44:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17744 to 11431. [2022-03-01 15:44:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11430 states have (on average 2.7646544181977255) internal successors, (31600), 11430 states have internal predecessors, (31600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 31600 transitions. [2022-03-01 15:44:15,939 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 31600 transitions. Word has length 181 [2022-03-01 15:44:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:15,939 INFO L470 AbstractCegarLoop]: Abstraction has 11431 states and 31600 transitions. [2022-03-01 15:44:15,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 31600 transitions. [2022-03-01 15:44:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:15,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:15,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:15,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-03-01 15:44:15,953 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:15,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash 891145984, now seen corresponding path program 4 times [2022-03-01 15:44:15,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:15,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649881668] [2022-03-01 15:44:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:16,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:16,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649881668] [2022-03-01 15:44:16,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649881668] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:16,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122862233] [2022-03-01 15:44:16,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:44:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:16,632 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:16,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-01 15:44:16,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:44:16,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:16,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-01 15:44:16,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:17,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:44:17,568 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 6 treesize of output 5 [2022-03-01 15:44:17,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:18,191 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:44:18,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-01 15:44:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:44:18,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:44:23,920 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5292 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5292))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (select .cse7 c_~get2~0.base))) (let ((.cse0 (select .cse6 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset)) (.cse3 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (<= (+ .cse0 1) .cse1) (< .cse2 .cse3) (= .cse0 .cse1) (= .cse3 .cse2)))))) is different from false [2022-03-01 15:44:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:24,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122862233] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:24,057 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:44:24,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 29] total 65 [2022-03-01 15:44:24,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125605761] [2022-03-01 15:44:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:24,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:44:24,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:44:24,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=3740, Unknown=9, NotChecked=124, Total=4160 [2022-03-01 15:44:24,058 INFO L87 Difference]: Start difference. First operand 11431 states and 31600 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:24,499 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5292 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5292))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (select .cse7 c_~get2~0.base))) (let ((.cse0 (select .cse6 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset)) (.cse3 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (<= (+ .cse0 1) .cse1) (< .cse2 .cse3) (= .cse0 .cse1) (= .cse3 .cse2)))))) (<= (+ |c_thread2Thread1of1ForFork1_#t~mem11| 1) |c_thread2Thread1of1ForFork1_#t~mem12|)) is different from false [2022-03-01 15:44:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:25,094 INFO L93 Difference]: Finished difference Result 16406 states and 45135 transitions. [2022-03-01 15:44:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:44:25,094 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:25,120 INFO L225 Difference]: With dead ends: 16406 [2022-03-01 15:44:25,121 INFO L226 Difference]: Without dead ends: 16406 [2022-03-01 15:44:25,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 323 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=448, Invalid=5556, Unknown=10, NotChecked=306, Total=6320 [2022-03-01 15:44:25,122 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 346 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 4925 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1190 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:25,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 4925 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 892 Invalid, 0 Unknown, 1190 Unchecked, 0.4s Time] [2022-03-01 15:44:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16406 states. [2022-03-01 15:44:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16406 to 11528. [2022-03-01 15:44:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11528 states, 11527 states have (on average 2.7663745987681096) internal successors, (31888), 11527 states have internal predecessors, (31888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 31888 transitions. [2022-03-01 15:44:25,305 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 31888 transitions. Word has length 181 [2022-03-01 15:44:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:25,305 INFO L470 AbstractCegarLoop]: Abstraction has 11528 states and 31888 transitions. [2022-03-01 15:44:25,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 31888 transitions. [2022-03-01 15:44:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:25,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:25,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:25,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:25,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:25,519 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1767032008, now seen corresponding path program 4 times [2022-03-01 15:44:25,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:25,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538897090] [2022-03-01 15:44:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:25,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:25,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538897090] [2022-03-01 15:44:25,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538897090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:25,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:25,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:44:25,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838616475] [2022-03-01 15:44:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:25,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:44:25,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:44:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:44:25,743 INFO L87 Difference]: Start difference. First operand 11528 states and 31888 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:26,263 INFO L93 Difference]: Finished difference Result 17739 states and 48952 transitions. [2022-03-01 15:44:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:44:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:26,292 INFO L225 Difference]: With dead ends: 17739 [2022-03-01 15:44:26,292 INFO L226 Difference]: Without dead ends: 17739 [2022-03-01 15:44:26,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:44:26,292 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1289 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:26,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 2710 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:44:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17739 states. [2022-03-01 15:44:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17739 to 11528. [2022-03-01 15:44:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11528 states, 11527 states have (on average 2.7663745987681096) internal successors, (31888), 11527 states have internal predecessors, (31888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 31888 transitions. [2022-03-01 15:44:26,476 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 31888 transitions. Word has length 181 [2022-03-01 15:44:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:26,476 INFO L470 AbstractCegarLoop]: Abstraction has 11528 states and 31888 transitions. [2022-03-01 15:44:26,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 31888 transitions. [2022-03-01 15:44:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:26,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:26,490 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, 1, 1, 1, 1] [2022-03-01 15:44:26,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-03-01 15:44:26,490 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1166049066, now seen corresponding path program 5 times [2022-03-01 15:44:26,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:26,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171012625] [2022-03-01 15:44:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:27,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:27,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171012625] [2022-03-01 15:44:27,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171012625] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:27,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767072007] [2022-03-01 15:44:27,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:44:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:27,506 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:27,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-01 15:44:27,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:44:27,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:27,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-01 15:44:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:27,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:44:28,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-03-01 15:44:28,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:44:28,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:44:28,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 15:44:28,624 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:28,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-03-01 15:44:28,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:44:29,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:29,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:30,014 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:30,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2022-03-01 15:44:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:30,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:44:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:31,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767072007] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:31,100 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:44:31,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [32, 30] total 70 [2022-03-01 15:44:31,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044761393] [2022-03-01 15:44:31,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:31,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:44:31,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:44:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=4455, Unknown=11, NotChecked=0, Total=4830 [2022-03-01 15:44:31,102 INFO L87 Difference]: Start difference. First operand 11528 states and 31888 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:31,865 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5348 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5348))) (let ((.cse5 (select .cse7 c_~get2~0.base)) (.cse4 (select .cse7 c_~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse0 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse1 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse3 (select .cse5 c_~get2~0.offset)) (.cse2 (select .cse4 c_~get1~0.offset))) (or (<= (+ .cse0 1) .cse1) (= .cse2 .cse3) (= .cse0 .cse1) (< .cse3 .cse2)))))) (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 (= |c_thread2Thread1of1ForFork1_#t~mem9| |c_thread2Thread1of1ForFork1_#t~mem10|) (<= (+ .cse8 1) .cse9) (= .cse9 .cse8) (let ((.cse11 (* c_thread2Thread1of1ForFork1_~i~1 4))) (< (select .cse10 (+ c_~get2~0.offset .cse11)) (select .cse12 (+ .cse11 c_~get1~0.offset)))))))) is different from false [2022-03-01 15:44:32,412 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse16 (select |c_#memory_int| c_~get2~0.base)) (.cse15 (select |c_#memory_int| c_~get1~0.base)) (.cse17 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse14 (select .cse15 (+ c_~get1~0.offset .cse17))) (.cse1 (select .cse16 (+ c_~get2~0.offset .cse17)))) (let ((.cse13 (<= (+ .cse14 1) .cse1)) (.cse2 (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|)) (.cse0 (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1))) (and (or (<= .cse0 .cse1) .cse2) (forall ((v_ArrVal_5348 (Array Int Int))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5348))) (let ((.cse8 (select .cse10 c_~get2~0.base)) (.cse7 (select .cse10 c_~get1~0.base)) (.cse9 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse7 (+ c_~get1~0.offset .cse9))) (.cse4 (select .cse8 (+ c_~get2~0.offset .cse9))) (.cse6 (select .cse8 c_~get2~0.offset)) (.cse5 (select .cse7 c_~get1~0.offset))) (or (<= (+ .cse3 1) .cse4) (= .cse5 .cse6) (= .cse3 .cse4) (< .cse6 .cse5)))))) (let ((.cse11 (select .cse16 c_~get2~0.offset)) (.cse12 (select .cse15 c_~get1~0.offset))) (or (= .cse11 .cse12) .cse13 (= .cse1 .cse14) (< .cse11 .cse12))) (or .cse13 .cse2) (or .cse2 (<= .cse0 |c_thread1Thread1of1ForFork0_#t~mem5|)))))) is different from false [2022-03-01 15:44:32,419 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5348 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5348))) (let ((.cse5 (select .cse7 c_~get2~0.base)) (.cse4 (select .cse7 c_~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse0 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse1 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse3 (select .cse5 c_~get2~0.offset)) (.cse2 (select .cse4 c_~get1~0.offset))) (or (<= (+ .cse0 1) .cse1) (= .cse2 .cse3) (= .cse0 .cse1) (< .cse3 .cse2)))))) (let ((.cse12 (select |c_#memory_int| c_~get1~0.base)) (.cse13 (select |c_#memory_int| c_~get2~0.base)) (.cse14 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse11 (select .cse13 (+ c_~get2~0.offset .cse14))) (.cse10 (select .cse12 (+ c_~get1~0.offset .cse14))) (.cse8 (select .cse13 c_~get2~0.offset)) (.cse9 (select .cse12 c_~get1~0.offset))) (or (= .cse8 .cse9) (<= (+ .cse10 1) .cse11) (= .cse11 .cse10) (< .cse8 .cse9)))) (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|))) is different from false [2022-03-01 15:44:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:33,756 INFO L93 Difference]: Finished difference Result 20724 states and 56979 transitions. [2022-03-01 15:44:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 15:44:33,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:33,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:33,790 INFO L225 Difference]: With dead ends: 20724 [2022-03-01 15:44:33,790 INFO L226 Difference]: Without dead ends: 20724 [2022-03-01 15:44:33,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=926, Invalid=9980, Unknown=26, NotChecked=624, Total=11556 [2022-03-01 15:44:33,791 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1221 mSDsluCounter, 5111 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 5538 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:33,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 5538 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1686 Invalid, 0 Unknown, 275 Unchecked, 0.9s Time] [2022-03-01 15:44:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20724 states. [2022-03-01 15:44:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20724 to 11606. [2022-03-01 15:44:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11606 states, 11605 states have (on average 2.7696682464454976) internal successors, (32142), 11605 states have internal predecessors, (32142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11606 states to 11606 states and 32142 transitions. [2022-03-01 15:44:33,989 INFO L78 Accepts]: Start accepts. Automaton has 11606 states and 32142 transitions. Word has length 181 [2022-03-01 15:44:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:33,989 INFO L470 AbstractCegarLoop]: Abstraction has 11606 states and 32142 transitions. [2022-03-01 15:44:33,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 11606 states and 32142 transitions. [2022-03-01 15:44:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:34,003 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:34,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:34,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:34,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2022-03-01 15:44:34,206 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash 680193576, now seen corresponding path program 6 times [2022-03-01 15:44:34,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:34,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139501740] [2022-03-01 15:44:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:34,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:34,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:34,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139501740] [2022-03-01 15:44:34,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139501740] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:34,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495648770] [2022-03-01 15:44:34,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:44:34,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:34,836 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:34,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-01 15:44:35,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-01 15:44:35,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:35,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-01 15:44:35,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:35,866 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:35,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-03-01 15:44:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:35,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:44:35,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495648770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:35,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:44:35,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 44 [2022-03-01 15:44:35,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351805806] [2022-03-01 15:44:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:35,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 15:44:35,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 15:44:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:44:35,976 INFO L87 Difference]: Start difference. First operand 11606 states and 32142 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:37,481 INFO L93 Difference]: Finished difference Result 18395 states and 50730 transitions. [2022-03-01 15:44:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 15:44:37,482 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:37,511 INFO L225 Difference]: With dead ends: 18395 [2022-03-01 15:44:37,511 INFO L226 Difference]: Without dead ends: 18395 [2022-03-01 15:44:37,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=647, Invalid=4323, Unknown=0, NotChecked=0, Total=4970 [2022-03-01 15:44:37,512 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1546 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:37,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 4683 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1281 Invalid, 0 Unknown, 351 Unchecked, 0.5s Time] [2022-03-01 15:44:37,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18395 states. [2022-03-01 15:44:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18395 to 11571. [2022-03-01 15:44:37,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11571 states, 11570 states have (on average 2.7671564390665515) internal successors, (32016), 11570 states have internal predecessors, (32016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 32016 transitions. [2022-03-01 15:44:37,702 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 32016 transitions. Word has length 181 [2022-03-01 15:44:37,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:37,702 INFO L470 AbstractCegarLoop]: Abstraction has 11571 states and 32016 transitions. [2022-03-01 15:44:37,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 32016 transitions. [2022-03-01 15:44:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:37,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:37,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:37,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:37,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2022-03-01 15:44:37,917 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1377001474, now seen corresponding path program 7 times [2022-03-01 15:44:37,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:37,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32966288] [2022-03-01 15:44:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:37,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:39,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:39,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32966288] [2022-03-01 15:44:39,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32966288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:39,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287850308] [2022-03-01 15:44:39,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:44:39,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:39,590 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:39,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-01 15:44:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:39,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 15:44:39,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:39,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:40,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:44:40,380 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:40,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-01 15:44:40,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:40,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:40,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:41,481 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:44:41,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-01 15:44:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:41,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:44:42,498 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5418 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5418))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 c_~get1~0.base)) (.cse4 (select .cse7 ~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (< .cse1 .cse0) (= .cse2 .cse3) (<= (+ .cse2 1) .cse3)))))) is different from false [2022-03-01 15:44:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:42,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287850308] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:42,638 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:44:42,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [38, 30] total 76 [2022-03-01 15:44:42,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84210021] [2022-03-01 15:44:42,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:42,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:44:42,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:42,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:44:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=5209, Unknown=1, NotChecked=146, Total=5700 [2022-03-01 15:44:42,640 INFO L87 Difference]: Start difference. First operand 11571 states and 32016 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:43,137 WARN L838 $PredicateComparison]: unable to prove that (and (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|)) (forall ((~get2~0.base Int) (v_ArrVal_5418 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5418))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 c_~get1~0.base)) (.cse4 (select .cse7 ~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (< .cse1 .cse0) (= .cse2 .cse3) (<= (+ .cse2 1) .cse3))))))) is different from false [2022-03-01 15:44:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:44,327 INFO L93 Difference]: Finished difference Result 17934 states and 49338 transitions. [2022-03-01 15:44:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 15:44:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:44,359 INFO L225 Difference]: With dead ends: 17934 [2022-03-01 15:44:44,359 INFO L226 Difference]: Without dead ends: 17934 [2022-03-01 15:44:44,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 323 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=678, Invalid=9228, Unknown=2, NotChecked=394, Total=10302 [2022-03-01 15:44:44,361 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 707 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 847 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:44,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 4911 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1282 Invalid, 0 Unknown, 847 Unchecked, 0.6s Time] [2022-03-01 15:44:44,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17934 states. [2022-03-01 15:44:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17934 to 11597. [2022-03-01 15:44:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11597 states, 11596 states have (on average 2.766816143497758) internal successors, (32084), 11596 states have internal predecessors, (32084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11597 states to 11597 states and 32084 transitions. [2022-03-01 15:44:44,564 INFO L78 Accepts]: Start accepts. Automaton has 11597 states and 32084 transitions. Word has length 181 [2022-03-01 15:44:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:44,564 INFO L470 AbstractCegarLoop]: Abstraction has 11597 states and 32084 transitions. [2022-03-01 15:44:44,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 11597 states and 32084 transitions. [2022-03-01 15:44:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:44,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:44,578 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] [2022-03-01 15:44:44,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-01 15:44:44,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:44,780 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1633556068, now seen corresponding path program 5 times [2022-03-01 15:44:44,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:44,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227000233] [2022-03-01 15:44:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:45,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:45,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227000233] [2022-03-01 15:44:45,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227000233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:45,079 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:45,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:44:45,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173663543] [2022-03-01 15:44:45,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:45,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:44:45,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:44:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:44:45,079 INFO L87 Difference]: Start difference. First operand 11597 states and 32084 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:45,641 INFO L93 Difference]: Finished difference Result 18372 states and 50771 transitions. [2022-03-01 15:44:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 15:44:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:45,671 INFO L225 Difference]: With dead ends: 18372 [2022-03-01 15:44:45,671 INFO L226 Difference]: Without dead ends: 18372 [2022-03-01 15:44:45,671 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 [2022-03-01 15:44:45,671 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 929 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:45,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 3112 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:44:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18372 states. [2022-03-01 15:44:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18372 to 11605. [2022-03-01 15:44:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11605 states, 11604 states have (on average 2.7671492588762496) internal successors, (32110), 11604 states have internal predecessors, (32110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11605 states to 11605 states and 32110 transitions. [2022-03-01 15:44:45,867 INFO L78 Accepts]: Start accepts. Automaton has 11605 states and 32110 transitions. Word has length 181 [2022-03-01 15:44:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:45,867 INFO L470 AbstractCegarLoop]: Abstraction has 11605 states and 32110 transitions. [2022-03-01 15:44:45,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 11605 states and 32110 transitions. [2022-03-01 15:44:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:45,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:45,881 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, 1, 1, 1, 1] [2022-03-01 15:44:45,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-03-01 15:44:45,881 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash -538103460, now seen corresponding path program 8 times [2022-03-01 15:44:45,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:45,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85756375] [2022-03-01 15:44:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:47,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:47,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85756375] [2022-03-01 15:44:47,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85756375] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:47,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923626036] [2022-03-01 15:44:47,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:44:47,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:47,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:47,177 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:47,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-01 15:44:47,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-01 15:44:47,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:47,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-01 15:44:47,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:48,724 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:48,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-01 15:44:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:48,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:44:48,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923626036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:48,775 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:44:48,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [37] total 55 [2022-03-01 15:44:48,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934364815] [2022-03-01 15:44:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:48,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 15:44:48,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 15:44:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 15:44:48,776 INFO L87 Difference]: Start difference. First operand 11605 states and 32110 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:52,245 INFO L93 Difference]: Finished difference Result 18968 states and 52402 transitions. [2022-03-01 15:44:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 15:44:52,245 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:52,274 INFO L225 Difference]: With dead ends: 18968 [2022-03-01 15:44:52,275 INFO L226 Difference]: Without dead ends: 18968 [2022-03-01 15:44:52,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=872, Invalid=6435, Unknown=3, NotChecked=0, Total=7310 [2022-03-01 15:44:52,276 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 1143 mSDsluCounter, 4703 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 5023 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:52,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 5023 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1191 Invalid, 0 Unknown, 507 Unchecked, 0.5s Time] [2022-03-01 15:44:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18968 states. [2022-03-01 15:44:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18968 to 11614. [2022-03-01 15:44:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11614 states, 11613 states have (on average 2.767329716696805) internal successors, (32137), 11613 states have internal predecessors, (32137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11614 states to 11614 states and 32137 transitions. [2022-03-01 15:44:52,473 INFO L78 Accepts]: Start accepts. Automaton has 11614 states and 32137 transitions. Word has length 181 [2022-03-01 15:44:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:52,473 INFO L470 AbstractCegarLoop]: Abstraction has 11614 states and 32137 transitions. [2022-03-01 15:44:52,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 11614 states and 32137 transitions. [2022-03-01 15:44:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:52,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:52,487 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, 1, 1, 1, 1] [2022-03-01 15:44:52,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:52,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:52,687 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1942462158, now seen corresponding path program 6 times [2022-03-01 15:44:52,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:52,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525883075] [2022-03-01 15:44:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:52,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:52,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525883075] [2022-03-01 15:44:52,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525883075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:52,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:52,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:44:52,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947237793] [2022-03-01 15:44:52,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:52,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:44:52,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:52,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:44:52,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:44:52,990 INFO L87 Difference]: Start difference. First operand 11614 states and 32137 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:53,539 INFO L93 Difference]: Finished difference Result 18328 states and 50643 transitions. [2022-03-01 15:44:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:44:53,539 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:53,568 INFO L225 Difference]: With dead ends: 18328 [2022-03-01 15:44:53,568 INFO L226 Difference]: Without dead ends: 18328 [2022-03-01 15:44:53,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:44:53,568 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1028 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:53,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 3037 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:44:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2022-03-01 15:44:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 11618. [2022-03-01 15:44:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 2.7680123956270983) internal successors, (32156), 11617 states have internal predecessors, (32156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 32156 transitions. [2022-03-01 15:44:53,756 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 32156 transitions. Word has length 181 [2022-03-01 15:44:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:53,756 INFO L470 AbstractCegarLoop]: Abstraction has 11618 states and 32156 transitions. [2022-03-01 15:44:53,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 32156 transitions. [2022-03-01 15:44:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:53,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:53,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:53,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-03-01 15:44:53,770 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash 167251536, now seen corresponding path program 9 times [2022-03-01 15:44:53,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:53,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887638712] [2022-03-01 15:44:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:53,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:54,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:54,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887638712] [2022-03-01 15:44:54,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887638712] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:54,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522208657] [2022-03-01 15:44:54,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:44:54,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:54,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:54,483 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:54,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-01 15:44:54,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-01 15:44:54,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:54,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-01 15:44:54,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:55,561 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 15:44:55,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-03-01 15:44:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:55,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 15:44:55,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522208657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:55,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 15:44:55,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 44 [2022-03-01 15:44:55,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325456730] [2022-03-01 15:44:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:55,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 15:44:55,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:55,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 15:44:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:44:55,673 INFO L87 Difference]: Start difference. First operand 11618 states and 32156 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:56,947 INFO L93 Difference]: Finished difference Result 18702 states and 51654 transitions. [2022-03-01 15:44:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 15:44:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:56,978 INFO L225 Difference]: With dead ends: 18702 [2022-03-01 15:44:56,978 INFO L226 Difference]: Without dead ends: 18702 [2022-03-01 15:44:56,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=592, Invalid=4100, Unknown=0, NotChecked=0, Total=4692 [2022-03-01 15:44:56,979 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 1132 mSDsluCounter, 4074 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:56,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 4374 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1269 Invalid, 0 Unknown, 115 Unchecked, 0.5s Time] [2022-03-01 15:44:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18702 states. [2022-03-01 15:44:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18702 to 11620. [2022-03-01 15:44:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11620 states, 11619 states have (on average 2.7681383940098114) internal successors, (32163), 11619 states have internal predecessors, (32163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11620 states to 11620 states and 32163 transitions. [2022-03-01 15:44:57,228 INFO L78 Accepts]: Start accepts. Automaton has 11620 states and 32163 transitions. Word has length 181 [2022-03-01 15:44:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:57,229 INFO L470 AbstractCegarLoop]: Abstraction has 11620 states and 32163 transitions. [2022-03-01 15:44:57,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 11620 states and 32163 transitions. [2022-03-01 15:44:57,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:57,243 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:57,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:57,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-01 15:44:57,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-03-01 15:44:57,444 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1804040840, now seen corresponding path program 7 times [2022-03-01 15:44:57,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:57,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018787037] [2022-03-01 15:44:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:44:57,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:57,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018787037] [2022-03-01 15:44:57,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018787037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:44:57,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:44:57,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 15:44:57,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960485696] [2022-03-01 15:44:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:44:57,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 15:44:57,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 15:44:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:44:57,688 INFO L87 Difference]: Start difference. First operand 11620 states and 32163 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:58,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:58,215 INFO L93 Difference]: Finished difference Result 18181 states and 50248 transitions. [2022-03-01 15:44:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:44:58,216 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-01 15:44:58,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:58,244 INFO L225 Difference]: With dead ends: 18181 [2022-03-01 15:44:58,245 INFO L226 Difference]: Without dead ends: 18181 [2022-03-01 15:44:58,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:44:58,245 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1101 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:58,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 2791 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 15:44:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18181 states. [2022-03-01 15:44:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18181 to 11615. [2022-03-01 15:44:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11615 states, 11614 states have (on average 2.7674358532805234) internal successors, (32141), 11614 states have internal predecessors, (32141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11615 states to 11615 states and 32141 transitions. [2022-03-01 15:44:58,435 INFO L78 Accepts]: Start accepts. Automaton has 11615 states and 32141 transitions. Word has length 181 [2022-03-01 15:44:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:58,435 INFO L470 AbstractCegarLoop]: Abstraction has 11615 states and 32141 transitions. [2022-03-01 15:44:58,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11615 states and 32141 transitions. [2022-03-01 15:44:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-01 15:44:58,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:58,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:58,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-03-01 15:44:58,449 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1889943514, now seen corresponding path program 10 times [2022-03-01 15:44:58,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:58,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273071437] [2022-03-01 15:44:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:44:58,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:58,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273071437] [2022-03-01 15:44:58,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273071437] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:58,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133705034] [2022-03-01 15:44:58,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:44:58,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:58,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:58,989 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:58,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-01 15:44:59,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:44:59,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:59,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-01 15:44:59,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:59,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-01 15:44:59,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-01 15:44:59,885 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 [2022-03-01 15:45:00,382 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-01 15:45:00,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-01 15:45:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:45:00,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:45:05,727 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5566 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5566))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get1~0.base)) (.cse4 (select .cse7 c_~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (< .cse1 .cse0) (= .cse2 .cse3)))))) is different from false [2022-03-01 15:45:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:45:05,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133705034] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:45:05,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:45:05,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [27, 29] total 59 [2022-03-01 15:45:05,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458665115] [2022-03-01 15:45:05,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:45:05,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-01 15:45:05,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:45:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-01 15:45:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2989, Unknown=9, NotChecked=112, Total=3422 [2022-03-01 15:45:05,865 INFO L87 Difference]: Start difference. First operand 11615 states and 32141 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:45:14,112 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5566 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5566))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get1~0.base)) (.cse4 (select .cse7 c_~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (< .cse1 .cse0) (= .cse2 .cse3)))))) (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|))) is different from false Received shutdown request... [2022-03-01 15:45:14,497 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-03-01 15:45:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 15:45:14,498 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 [2022-03-01 15:45:14,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 329 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=429, Invalid=4255, Unknown=16, NotChecked=270, Total=4970 [2022-03-01 15:45:14,499 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 174 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:45:14,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2982 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 687 Invalid, 0 Unknown, 409 Unchecked, 0.3s Time] [2022-03-01 15:45:14,499 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 15:45:14,512 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 15:45:14,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-01 15:45:14,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable284 [2022-03-01 15:45:14,700 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (11615states) and FLOYD_HOARE automaton (currently 24 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 3ms.. [2022-03-01 15:45:14,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 15:45:14,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 15:45:14,704 INFO L732 BasicCegarLoop]: Path program histogram: [74, 64, 48, 37, 10, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:45:14,706 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 15:45:14,706 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 15:45:14,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 03:45:14 BasicIcfg [2022-03-01 15:45:14,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 15:45:14,708 INFO L158 Benchmark]: Toolchain (without parser) took 704211.63ms. Allocated memory was 180.4MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 123.5MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.04ms. Allocated memory was 180.4MB in the beginning and 239.1MB in the end (delta: 58.7MB). Free memory was 123.3MB in the beginning and 208.2MB in the end (delta: -85.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.38ms. Allocated memory is still 239.1MB. Free memory was 208.2MB in the beginning and 206.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L158 Benchmark]: Boogie Preprocessor took 32.04ms. Allocated memory is still 239.1MB. Free memory was 206.2MB in the beginning and 204.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L158 Benchmark]: RCFGBuilder took 432.29ms. Allocated memory is still 239.1MB. Free memory was 204.6MB in the beginning and 186.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L158 Benchmark]: TraceAbstraction took 703428.96ms. Allocated memory was 239.1MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 185.7MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-03-01 15:45:14,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 280.04ms. Allocated memory was 180.4MB in the beginning and 239.1MB in the end (delta: 58.7MB). Free memory was 123.3MB in the beginning and 208.2MB in the end (delta: -85.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.38ms. Allocated memory is still 239.1MB. Free memory was 208.2MB in the beginning and 206.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.04ms. Allocated memory is still 239.1MB. Free memory was 206.2MB in the beginning and 204.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 432.29ms. Allocated memory is still 239.1MB. Free memory was 204.6MB in the beginning and 186.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 703428.96ms. Allocated memory was 239.1MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 185.7MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11615states) and FLOYD_HOARE automaton (currently 24 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 3ms.. - 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 constructing difference of abstraction (11615states) and FLOYD_HOARE automaton (currently 24 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 3ms.. - 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 constructing difference of abstraction (11615states) and FLOYD_HOARE automaton (currently 24 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 35 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 292 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 703.3s, OverallIterations: 285, TraceHistogramMax: 2, PathProgramHistogramMax: 74, EmptinessCheckTime: 5.8s, AutomataDifference: 349.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 350570 SdHoareTripleChecker+Valid, 120.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 350570 mSDsluCounter, 1091780 SdHoareTripleChecker+Invalid, 99.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 37893 IncrementalHoareTripleChecker+Unchecked, 1010586 mSDsCounter, 5700 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 298011 IncrementalHoareTripleChecker+Invalid, 341604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5700 mSolverCounterUnsat, 105053 mSDtfsCounter, 298011 mSolverCounterSat, 1.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31484 GetRequests, 18738 SyntacticMatches, 190 SemanticMatches, 12555 ConstructedPredicates, 26 IntricatePredicates, 27 DeprecatedPredicates, 159999 ImplicationChecksByTransitivity, 281.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19823occurred in iteration=106, InterpolantAutomatonStates: 7455, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 82.3s AutomataMinimizationTime, 284 MinimizatonAttempts, 2867497 StatesRemovedByMinimization, 280 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 238.3s InterpolantComputationTime, 59724 NumberOfCodeBlocks, 59449 NumberOfCodeBlocksAsserted, 372 NumberOfCheckSat, 68104 ConstructedInterpolants, 631 QuantifiedInterpolants, 398723 SizeOfPredicates, 1399 NumberOfNonLiveVariables, 20490 ConjunctsInSsa, 2703 ConjunctsInUnsatCore, 393 InterpolantComputations, 245 PerfectInterpolantSequences, 842/1060 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