/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread/sigma.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:14:24,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:14:24,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:14:24,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:14:24,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:14:24,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:14:24,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:14:24,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:14:24,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:14:24,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:14:24,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:14:24,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:14:24,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:14:24,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:14:24,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:14:24,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:14:24,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:14:24,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:14:24,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:14:24,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:14:24,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:14:24,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:14:24,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:14:24,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:14:24,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:14:24,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:14:24,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:14:24,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:14:24,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:14:24,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:14:24,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:14:24,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:14:24,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:14:24,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:14:24,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:14:24,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:14:24,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:14:24,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:14:24,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:14:24,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:14:24,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:14:24,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 01:14:24,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:14:24,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:14:24,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:14:24,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:14:24,493 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:14:24,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:14:24,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:14:24,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:14:24,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:14:24,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:14:24,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:14:24,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:14:24,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:14:24,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:14:24,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:14:24,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:14:24,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:14:24,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:14:24,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:14:24,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:14:24,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:14:24,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:24,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:14:24,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:14:24,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:14:24,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:14:24,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:14:24,500 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:14:24,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:14:24,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:14:24,500 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:14:24,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:14:24,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:14:24,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:14:24,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:14:24,817 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:14:24,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sigma.i [2020-10-22 01:14:24,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043a0a937/3272d586766c4859b604916e6908412a/FLAGd1dca29f7 [2020-10-22 01:14:25,392 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:14:25,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i [2020-10-22 01:14:25,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043a0a937/3272d586766c4859b604916e6908412a/FLAGd1dca29f7 [2020-10-22 01:14:25,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043a0a937/3272d586766c4859b604916e6908412a [2020-10-22 01:14:25,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:14:25,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:14:25,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:25,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:14:25,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:14:25,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:25" (1/1) ... [2020-10-22 01:14:25,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179c9494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:25, skipping insertion in model container [2020-10-22 01:14:25,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:25" (1/1) ... [2020-10-22 01:14:25,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:14:25,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:14:26,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:26,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:14:26,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:26,745 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:14:26,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26 WrapperNode [2020-10-22 01:14:26,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:26,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:26,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:14:26,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:14:26,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:26,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:14:26,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:14:26,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:14:26,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... [2020-10-22 01:14:26,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:14:26,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:14:26,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:14:26,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:14:26,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:14:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-22 01:14:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:14:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 01:14:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:14:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-22 01:14:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-22 01:14:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:14:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-22 01:14:26,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-22 01:14:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:14:26,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:14:26,916 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:14:27,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:14:27,407 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-22 01:14:27,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:27 BoogieIcfgContainer [2020-10-22 01:14:27,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:14:27,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:14:27,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:14:27,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:14:27,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:14:25" (1/3) ... [2020-10-22 01:14:27,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898b2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:27, skipping insertion in model container [2020-10-22 01:14:27,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:26" (2/3) ... [2020-10-22 01:14:27,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898b2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:27, skipping insertion in model container [2020-10-22 01:14:27,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:27" (3/3) ... [2020-10-22 01:14:27,423 INFO L111 eAbstractionObserver]: Analyzing ICFG sigma.i [2020-10-22 01:14:27,435 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:14:27,436 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:14:27,446 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 01:14:27,447 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:14:27,478 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,478 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,478 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,479 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,479 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,479 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,483 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,484 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,484 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,484 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:27,492 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-22 01:14:27,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:14:27,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:27,531 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:27,531 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:27,531 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:27,531 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:27,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:27,532 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:27,532 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:27,545 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:27,546 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 93 transitions, 194 flow [2020-10-22 01:14:27,549 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 93 transitions, 194 flow [2020-10-22 01:14:27,551 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 93 transitions, 194 flow [2020-10-22 01:14:27,616 INFO L129 PetriNetUnfolder]: 15/135 cut-off events. [2020-10-22 01:14:27,616 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-22 01:14:27,621 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 135 events. 15/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2020-10-22 01:14:27,624 INFO L116 LiptonReduction]: Number of co-enabled transitions 384 [2020-10-22 01:14:29,318 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-22 01:14:29,510 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-22 01:14:29,625 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-22 01:14:30,166 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-22 01:14:30,336 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-22 01:14:30,874 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-22 01:14:31,053 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-22 01:14:31,084 INFO L131 LiptonReduction]: Checked pairs total: 507 [2020-10-22 01:14:31,084 INFO L133 LiptonReduction]: Total number of compositions: 104 [2020-10-22 01:14:31,090 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 42 flow [2020-10-22 01:14:31,100 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36 states. [2020-10-22 01:14:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-22 01:14:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:14:31,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:31,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:14:31,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash 11355996, now seen corresponding path program 1 times [2020-10-22 01:14:31,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:31,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829189044] [2020-10-22 01:14:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:31,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829189044] [2020-10-22 01:14:31,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:31,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:31,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [252693909] [2020-10-22 01:14:31,366 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:31,369 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:31,383 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:14:31,383 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:31,388 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:31,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:31,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:31,408 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-22 01:14:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:31,488 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2020-10-22 01:14:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:31,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:14:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:31,500 INFO L225 Difference]: With dead ends: 36 [2020-10-22 01:14:31,501 INFO L226 Difference]: Without dead ends: 31 [2020-10-22 01:14:31,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-22 01:14:31,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-22 01:14:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-22 01:14:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2020-10-22 01:14:31,541 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 4 [2020-10-22 01:14:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:31,541 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2020-10-22 01:14:31,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2020-10-22 01:14:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:31,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:31,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:31,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:14:31,543 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1427608065, now seen corresponding path program 1 times [2020-10-22 01:14:31,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:31,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144602775] [2020-10-22 01:14:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:31,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144602775] [2020-10-22 01:14:31,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:31,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:31,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1107907992] [2020-10-22 01:14:31,655 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:31,657 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:31,662 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 01:14:31,662 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:31,663 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:31,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:31,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:31,666 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand 4 states. [2020-10-22 01:14:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:31,724 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2020-10-22 01:14:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:31,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 01:14:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:31,726 INFO L225 Difference]: With dead ends: 28 [2020-10-22 01:14:31,727 INFO L226 Difference]: Without dead ends: 28 [2020-10-22 01:14:31,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-22 01:14:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-22 01:14:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-22 01:14:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-10-22 01:14:31,733 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 9 [2020-10-22 01:14:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:31,734 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-10-22 01:14:31,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-10-22 01:14:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:31,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:31,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-22 01:14:31,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:14:31,735 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1306363879, now seen corresponding path program 1 times [2020-10-22 01:14:31,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:31,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879671996] [2020-10-22 01:14:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:31,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:31,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:31,876 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:14:31,876 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:14:31,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:14:31,877 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:14:31,878 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:14:31,878 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-22 01:14:31,893 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,893 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,894 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,894 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,894 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,894 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,894 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,895 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,895 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,895 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,895 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,895 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,896 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,896 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,896 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,896 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,901 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,902 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,902 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,902 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:31,910 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-10-22 01:14:31,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:14:31,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:31,911 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:31,911 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:31,911 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:31,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:31,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:31,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:31,912 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:31,917 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:31,917 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 99 transitions, 216 flow [2020-10-22 01:14:31,917 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 99 transitions, 216 flow [2020-10-22 01:14:31,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 94 places, 99 transitions, 216 flow [2020-10-22 01:14:32,020 INFO L129 PetriNetUnfolder]: 28/233 cut-off events. [2020-10-22 01:14:32,021 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-22 01:14:32,026 INFO L80 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 233 events. 28/233 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 524 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 137. Up to 8 conditions per place. [2020-10-22 01:14:32,033 INFO L116 LiptonReduction]: Number of co-enabled transitions 904 [2020-10-22 01:14:33,484 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-22 01:14:33,969 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-22 01:14:34,268 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-22 01:14:34,469 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:14:34,496 INFO L131 LiptonReduction]: Checked pairs total: 1309 [2020-10-22 01:14:34,496 INFO L133 LiptonReduction]: Total number of compositions: 101 [2020-10-22 01:14:34,497 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 22 transitions, 62 flow [2020-10-22 01:14:34,501 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 109 states. [2020-10-22 01:14:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2020-10-22 01:14:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:14:34,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:34,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:14:34,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash 17707162, now seen corresponding path program 1 times [2020-10-22 01:14:34,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:34,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649538314] [2020-10-22 01:14:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:34,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649538314] [2020-10-22 01:14:34,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:34,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:34,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1715588743] [2020-10-22 01:14:34,561 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:34,562 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:34,563 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:14:34,563 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:34,563 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:34,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:34,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:34,564 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 3 states. [2020-10-22 01:14:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:34,596 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-22 01:14:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:34,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:14:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:34,600 INFO L225 Difference]: With dead ends: 109 [2020-10-22 01:14:34,600 INFO L226 Difference]: Without dead ends: 98 [2020-10-22 01:14:34,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-22 01:14:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-22 01:14:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:14:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 174 transitions. [2020-10-22 01:14:34,615 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 174 transitions. Word has length 4 [2020-10-22 01:14:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:34,616 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 174 transitions. [2020-10-22 01:14:34,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 174 transitions. [2020-10-22 01:14:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:34,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:34,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:34,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 01:14:34,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash -777168105, now seen corresponding path program 1 times [2020-10-22 01:14:34,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:34,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757381210] [2020-10-22 01:14:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:34,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757381210] [2020-10-22 01:14:34,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:34,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:34,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2106252297] [2020-10-22 01:14:34,675 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:34,676 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:34,677 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:14:34,678 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:34,678 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:34,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:34,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:34,679 INFO L87 Difference]: Start difference. First operand 98 states and 174 transitions. Second operand 4 states. [2020-10-22 01:14:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:34,747 INFO L93 Difference]: Finished difference Result 103 states and 171 transitions. [2020-10-22 01:14:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:34,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:14:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:34,750 INFO L225 Difference]: With dead ends: 103 [2020-10-22 01:14:34,750 INFO L226 Difference]: Without dead ends: 103 [2020-10-22 01:14:34,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-22 01:14:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-10-22 01:14:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 01:14:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 164 transitions. [2020-10-22 01:14:34,760 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 164 transitions. Word has length 10 [2020-10-22 01:14:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:34,761 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 164 transitions. [2020-10-22 01:14:34,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 164 transitions. [2020-10-22 01:14:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:14:34,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:34,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:34,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 01:14:34,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:34,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:34,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1971075165, now seen corresponding path program 1 times [2020-10-22 01:14:34,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:34,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206448757] [2020-10-22 01:14:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:34,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206448757] [2020-10-22 01:14:34,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813333158] [2020-10-22 01:14:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:34,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:14:34,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:34,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:34,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:14:34,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [361406470] [2020-10-22 01:14:34,992 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:34,995 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:35,001 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-22 01:14:35,001 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:35,131 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:35,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:35,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:35,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:35,133 INFO L87 Difference]: Start difference. First operand 97 states and 164 transitions. Second operand 4 states. [2020-10-22 01:14:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:35,171 INFO L93 Difference]: Finished difference Result 95 states and 159 transitions. [2020-10-22 01:14:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:35,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:14:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:35,173 INFO L225 Difference]: With dead ends: 95 [2020-10-22 01:14:35,173 INFO L226 Difference]: Without dead ends: 95 [2020-10-22 01:14:35,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-22 01:14:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-22 01:14:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2020-10-22 01:14:35,182 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 17 [2020-10-22 01:14:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:35,183 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2020-10-22 01:14:35,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2020-10-22 01:14:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:14:35,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:35,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-22 01:14:35,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-22 01:14:35,399 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1370971532, now seen corresponding path program 1 times [2020-10-22 01:14:35,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:35,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780919830] [2020-10-22 01:14:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:35,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:35,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:35,524 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:14:35,525 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:14:35,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 01:14:35,525 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:14:35,526 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:14:35,527 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-22 01:14:35,534 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,535 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,535 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,535 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,535 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,536 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,536 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,536 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,536 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,536 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,537 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,537 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,537 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,537 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,537 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,538 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,538 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,538 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,539 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,539 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,539 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,539 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,541 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,542 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,542 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,542 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,543 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,544 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,544 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,544 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:35,554 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-10-22 01:14:35,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:14:35,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:35,555 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:35,555 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:35,555 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:35,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:35,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:35,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:35,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:35,558 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:35,558 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 105 transitions, 240 flow [2020-10-22 01:14:35,558 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 105 transitions, 240 flow [2020-10-22 01:14:35,558 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 105 transitions, 240 flow [2020-10-22 01:14:35,659 INFO L129 PetriNetUnfolder]: 54/412 cut-off events. [2020-10-22 01:14:35,659 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-22 01:14:35,662 INFO L80 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 54/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1259 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 241. Up to 16 conditions per place. [2020-10-22 01:14:35,668 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 01:14:37,041 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-22 01:14:37,842 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-22 01:14:38,314 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-22 01:14:38,495 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:14:38,506 INFO L131 LiptonReduction]: Checked pairs total: 2428 [2020-10-22 01:14:38,506 INFO L133 LiptonReduction]: Total number of compositions: 102 [2020-10-22 01:14:38,507 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 25 transitions, 80 flow [2020-10-22 01:14:38,519 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 297 states. [2020-10-22 01:14:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-10-22 01:14:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:14:38,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:38,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:14:38,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash 24231275, now seen corresponding path program 1 times [2020-10-22 01:14:38,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:38,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250840055] [2020-10-22 01:14:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:38,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250840055] [2020-10-22 01:14:38,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:38,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [383075177] [2020-10-22 01:14:38,568 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:38,568 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:38,569 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:14:38,569 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:38,569 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:38,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:38,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:38,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:38,570 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2020-10-22 01:14:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:38,605 INFO L93 Difference]: Finished difference Result 297 states and 636 transitions. [2020-10-22 01:14:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:38,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:14:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:38,612 INFO L225 Difference]: With dead ends: 297 [2020-10-22 01:14:38,612 INFO L226 Difference]: Without dead ends: 268 [2020-10-22 01:14:38,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-22 01:14:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2020-10-22 01:14:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-22 01:14:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 580 transitions. [2020-10-22 01:14:38,632 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 580 transitions. Word has length 4 [2020-10-22 01:14:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:38,632 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 580 transitions. [2020-10-22 01:14:38,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 580 transitions. [2020-10-22 01:14:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:38,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:38,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:38,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 01:14:38,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1091700886, now seen corresponding path program 1 times [2020-10-22 01:14:38,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:38,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402141017] [2020-10-22 01:14:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:38,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402141017] [2020-10-22 01:14:38,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:38,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:38,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [480762443] [2020-10-22 01:14:38,669 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:38,670 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:38,671 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:14:38,671 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:38,672 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:38,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:38,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:38,673 INFO L87 Difference]: Start difference. First operand 268 states and 580 transitions. Second operand 4 states. [2020-10-22 01:14:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:38,711 INFO L93 Difference]: Finished difference Result 299 states and 612 transitions. [2020-10-22 01:14:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:38,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:14:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:38,713 INFO L225 Difference]: With dead ends: 299 [2020-10-22 01:14:38,714 INFO L226 Difference]: Without dead ends: 299 [2020-10-22 01:14:38,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-22 01:14:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2020-10-22 01:14:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-22 01:14:38,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 577 transitions. [2020-10-22 01:14:38,731 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 577 transitions. Word has length 10 [2020-10-22 01:14:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:38,731 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 577 transitions. [2020-10-22 01:14:38,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 577 transitions. [2020-10-22 01:14:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:14:38,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:38,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:38,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 01:14:38,733 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:38,734 INFO L82 PathProgramCache]: Analyzing trace with hash 792472666, now seen corresponding path program 1 times [2020-10-22 01:14:38,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:38,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020260156] [2020-10-22 01:14:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:38,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020260156] [2020-10-22 01:14:38,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001550218] [2020-10-22 01:14:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:38,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:14:38,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:38,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:38,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:14:38,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1455081956] [2020-10-22 01:14:38,908 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:38,911 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:38,915 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-22 01:14:38,915 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:39,020 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:39,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:39,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:39,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:39,021 INFO L87 Difference]: Start difference. First operand 277 states and 577 transitions. Second operand 4 states. [2020-10-22 01:14:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:39,056 INFO L93 Difference]: Finished difference Result 275 states and 572 transitions. [2020-10-22 01:14:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:39,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:14:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:39,059 INFO L225 Difference]: With dead ends: 275 [2020-10-22 01:14:39,059 INFO L226 Difference]: Without dead ends: 275 [2020-10-22 01:14:39,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-22 01:14:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-10-22 01:14:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-22 01:14:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 572 transitions. [2020-10-22 01:14:39,072 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 572 transitions. Word has length 17 [2020-10-22 01:14:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:39,072 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 572 transitions. [2020-10-22 01:14:39,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 572 transitions. [2020-10-22 01:14:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:14:39,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:39,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:39,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-22 01:14:39,288 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash 644483640, now seen corresponding path program 1 times [2020-10-22 01:14:39,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:39,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697866027] [2020-10-22 01:14:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697866027] [2020-10-22 01:14:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159174915] [2020-10-22 01:14:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:39,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:14:39,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:39,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:39,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:39,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [578270945] [2020-10-22 01:14:39,472 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:39,477 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:39,484 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 27 transitions. [2020-10-22 01:14:39,485 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:39,564 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:39,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:39,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:39,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:39,567 INFO L87 Difference]: Start difference. First operand 275 states and 572 transitions. Second operand 5 states. [2020-10-22 01:14:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:39,647 INFO L93 Difference]: Finished difference Result 271 states and 560 transitions. [2020-10-22 01:14:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:39,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-22 01:14:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:39,652 INFO L225 Difference]: With dead ends: 271 [2020-10-22 01:14:39,652 INFO L226 Difference]: Without dead ends: 271 [2020-10-22 01:14:39,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-22 01:14:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2020-10-22 01:14:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-22 01:14:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 560 transitions. [2020-10-22 01:14:39,663 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 560 transitions. Word has length 23 [2020-10-22 01:14:39,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:39,663 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 560 transitions. [2020-10-22 01:14:39,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 560 transitions. [2020-10-22 01:14:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:14:39,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:39,665 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2020-10-22 01:14:39,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-22 01:14:39,879 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:39,879 INFO L82 PathProgramCache]: Analyzing trace with hash -599016605, now seen corresponding path program 1 times [2020-10-22 01:14:39,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:39,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209514780] [2020-10-22 01:14:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:39,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:39,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:39,931 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:14:39,932 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:14:39,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-22 01:14:39,932 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:14:39,933 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:14:39,934 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-22 01:14:39,941 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,941 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,941 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,942 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,942 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,942 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,942 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,943 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,943 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,943 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,943 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,943 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,943 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,944 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,944 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,945 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,945 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,946 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,946 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,948 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,948 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,948 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,948 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,950 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,950 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,950 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,950 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,952 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,952 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,952 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,952 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:39,956 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-22 01:14:39,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:14:39,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:39,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:39,957 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:39,957 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:39,957 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:39,957 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:39,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:39,958 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:39,959 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:39,959 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 111 transitions, 266 flow [2020-10-22 01:14:39,959 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 111 transitions, 266 flow [2020-10-22 01:14:39,959 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 108 places, 111 transitions, 266 flow [2020-10-22 01:14:40,043 INFO L129 PetriNetUnfolder]: 108/755 cut-off events. [2020-10-22 01:14:40,043 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-22 01:14:40,046 INFO L80 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 755 events. 108/755 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3147 event pairs, 6 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 432. Up to 32 conditions per place. [2020-10-22 01:14:40,058 INFO L116 LiptonReduction]: Number of co-enabled transitions 2032 [2020-10-22 01:14:42,118 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-22 01:14:42,283 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-22 01:14:42,679 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-22 01:14:42,857 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:14:42,870 INFO L131 LiptonReduction]: Checked pairs total: 3174 [2020-10-22 01:14:42,871 INFO L133 LiptonReduction]: Total number of compositions: 103 [2020-10-22 01:14:42,871 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 100 flow [2020-10-22 01:14:42,934 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 817 states. [2020-10-22 01:14:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states. [2020-10-22 01:14:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:14:42,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:42,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:14:42,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:42,935 INFO L82 PathProgramCache]: Analyzing trace with hash 31009063, now seen corresponding path program 1 times [2020-10-22 01:14:42,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:42,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118313648] [2020-10-22 01:14:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:42,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118313648] [2020-10-22 01:14:42,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:42,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:42,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [188233675] [2020-10-22 01:14:42,971 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:42,971 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:42,972 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:14:42,972 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:42,973 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:42,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:42,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:42,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:42,974 INFO L87 Difference]: Start difference. First operand 817 states. Second operand 3 states. [2020-10-22 01:14:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:43,000 INFO L93 Difference]: Finished difference Result 817 states and 2065 transitions. [2020-10-22 01:14:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:43,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:14:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:43,007 INFO L225 Difference]: With dead ends: 817 [2020-10-22 01:14:43,007 INFO L226 Difference]: Without dead ends: 734 [2020-10-22 01:14:43,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-22 01:14:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2020-10-22 01:14:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-22 01:14:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1874 transitions. [2020-10-22 01:14:43,035 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1874 transitions. Word has length 4 [2020-10-22 01:14:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:43,035 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1874 transitions. [2020-10-22 01:14:43,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1874 transitions. [2020-10-22 01:14:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:43,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:43,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:43,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-22 01:14:43,036 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:43,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:43,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1444614109, now seen corresponding path program 1 times [2020-10-22 01:14:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:43,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108651846] [2020-10-22 01:14:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:43,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108651846] [2020-10-22 01:14:43,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336869584] [2020-10-22 01:14:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:43,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:14:43,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:43,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:43,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:14:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [616863114] [2020-10-22 01:14:43,161 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:43,162 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:43,163 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:14:43,163 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:43,164 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:43,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:43,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:43,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:43,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:43,165 INFO L87 Difference]: Start difference. First operand 734 states and 1874 transitions. Second operand 4 states. [2020-10-22 01:14:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:43,204 INFO L93 Difference]: Finished difference Result 734 states and 1872 transitions. [2020-10-22 01:14:43,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:43,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:14:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:43,211 INFO L225 Difference]: With dead ends: 734 [2020-10-22 01:14:43,211 INFO L226 Difference]: Without dead ends: 734 [2020-10-22 01:14:43,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-22 01:14:43,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2020-10-22 01:14:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-22 01:14:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1872 transitions. [2020-10-22 01:14:43,236 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1872 transitions. Word has length 10 [2020-10-22 01:14:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:43,236 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1872 transitions. [2020-10-22 01:14:43,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1872 transitions. [2020-10-22 01:14:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 01:14:43,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:43,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:43,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:43,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:43,452 INFO L82 PathProgramCache]: Analyzing trace with hash 742092466, now seen corresponding path program 1 times [2020-10-22 01:14:43,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:43,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75395540] [2020-10-22 01:14:43,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:43,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75395540] [2020-10-22 01:14:43,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109285964] [2020-10-22 01:14:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:43,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:14:43,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:43,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:43,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:43,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1480405832] [2020-10-22 01:14:43,638 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:43,640 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:43,642 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2020-10-22 01:14:43,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:43,643 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:43,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:43,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:43,644 INFO L87 Difference]: Start difference. First operand 734 states and 1872 transitions. Second operand 5 states. [2020-10-22 01:14:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:43,682 INFO L93 Difference]: Finished difference Result 734 states and 1868 transitions. [2020-10-22 01:14:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:43,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-22 01:14:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:43,688 INFO L225 Difference]: With dead ends: 734 [2020-10-22 01:14:43,688 INFO L226 Difference]: Without dead ends: 734 [2020-10-22 01:14:43,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-22 01:14:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2020-10-22 01:14:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-22 01:14:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1868 transitions. [2020-10-22 01:14:43,711 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1868 transitions. Word has length 16 [2020-10-22 01:14:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:43,712 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1868 transitions. [2020-10-22 01:14:43,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1868 transitions. [2020-10-22 01:14:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 01:14:43,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:43,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:43,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-22 01:14:43,928 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2036429414, now seen corresponding path program 1 times [2020-10-22 01:14:43,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:43,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603709889] [2020-10-22 01:14:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:43,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603709889] [2020-10-22 01:14:43,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937228891] [2020-10-22 01:14:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 01:14:44,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:44,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:44,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:44,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1721196706] [2020-10-22 01:14:44,124 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:44,126 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:44,130 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-10-22 01:14:44,130 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:44,131 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:44,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:44,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:44,132 INFO L87 Difference]: Start difference. First operand 734 states and 1868 transitions. Second operand 6 states. [2020-10-22 01:14:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:44,175 INFO L93 Difference]: Finished difference Result 734 states and 1860 transitions. [2020-10-22 01:14:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:14:44,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-22 01:14:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:44,181 INFO L225 Difference]: With dead ends: 734 [2020-10-22 01:14:44,181 INFO L226 Difference]: Without dead ends: 734 [2020-10-22 01:14:44,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-22 01:14:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2020-10-22 01:14:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-22 01:14:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1860 transitions. [2020-10-22 01:14:44,204 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1860 transitions. Word has length 22 [2020-10-22 01:14:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:44,205 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1860 transitions. [2020-10-22 01:14:44,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1860 transitions. [2020-10-22 01:14:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-22 01:14:44,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:44,207 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:44,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:44,421 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1202735175, now seen corresponding path program 1 times [2020-10-22 01:14:44,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:44,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835093233] [2020-10-22 01:14:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:44,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835093233] [2020-10-22 01:14:44,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139244150] [2020-10-22 01:14:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:44,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:44,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:44,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:44,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:14:44,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [244540981] [2020-10-22 01:14:44,622 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:44,626 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:44,632 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 28 transitions. [2020-10-22 01:14:44,632 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:44,633 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:44,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:44,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:44,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:44,634 INFO L87 Difference]: Start difference. First operand 734 states and 1860 transitions. Second operand 7 states. [2020-10-22 01:14:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:44,677 INFO L93 Difference]: Finished difference Result 201 states and 511 transitions. [2020-10-22 01:14:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:44,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-22 01:14:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:44,679 INFO L225 Difference]: With dead ends: 201 [2020-10-22 01:14:44,680 INFO L226 Difference]: Without dead ends: 201 [2020-10-22 01:14:44,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:44,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-22 01:14:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-10-22 01:14:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-22 01:14:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 511 transitions. [2020-10-22 01:14:44,688 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 511 transitions. Word has length 28 [2020-10-22 01:14:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:44,688 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 511 transitions. [2020-10-22 01:14:44,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 511 transitions. [2020-10-22 01:14:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-22 01:14:44,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:44,690 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:44,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-22 01:14:44,905 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:44,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1370595845, now seen corresponding path program 1 times [2020-10-22 01:14:44,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:44,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59468395] [2020-10-22 01:14:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:44,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:44,952 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:44,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:14:44,969 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:14:44,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-22 01:14:44,969 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:14:44,969 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:14:44,972 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:14:44,973 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-22 01:14:44,987 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,987 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,988 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,988 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,988 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,988 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,988 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,988 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,989 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,989 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,989 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,989 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,989 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,990 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,990 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,990 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,990 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,990 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,990 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,991 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,991 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,991 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,991 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,991 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,991 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,992 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,992 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,992 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,992 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,992 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,993 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,993 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,993 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,993 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,995 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,995 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,997 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,997 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,997 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,997 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,998 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,999 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,999 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:44,999 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:45,000 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:45,001 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:45,001 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:45,001 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:45,006 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2020-10-22 01:14:45,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:14:45,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:45,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:45,007 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:45,007 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:45,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:45,007 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:45,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:45,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:45,009 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:45,010 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 117 transitions, 294 flow [2020-10-22 01:14:45,010 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 117 transitions, 294 flow [2020-10-22 01:14:45,011 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 294 flow [2020-10-22 01:14:45,224 INFO L129 PetriNetUnfolder]: 222/1430 cut-off events. [2020-10-22 01:14:45,224 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-22 01:14:45,231 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 1430 events. 222/1430 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7908 event pairs, 23 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 800. Up to 80 conditions per place. [2020-10-22 01:14:45,257 INFO L116 LiptonReduction]: Number of co-enabled transitions 2680 [2020-10-22 01:14:46,822 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-22 01:14:47,258 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-22 01:14:47,684 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-22 01:14:47,877 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:14:47,894 INFO L131 LiptonReduction]: Checked pairs total: 4720 [2020-10-22 01:14:47,894 INFO L133 LiptonReduction]: Total number of compositions: 109 [2020-10-22 01:14:47,894 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 31 transitions, 122 flow [2020-10-22 01:14:47,996 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2289 states. [2020-10-22 01:14:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states. [2020-10-22 01:14:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:14:47,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:47,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:14:47,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:47,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:47,998 INFO L82 PathProgramCache]: Analyzing trace with hash 38144874, now seen corresponding path program 1 times [2020-10-22 01:14:48,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:48,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376433176] [2020-10-22 01:14:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:48,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376433176] [2020-10-22 01:14:48,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:48,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:48,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1331912970] [2020-10-22 01:14:48,018 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:48,018 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:48,019 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:14:48,019 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:48,019 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:48,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:48,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:48,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:48,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:48,020 INFO L87 Difference]: Start difference. First operand 2289 states. Second operand 3 states. [2020-10-22 01:14:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:48,058 INFO L93 Difference]: Finished difference Result 2289 states and 6658 transitions. [2020-10-22 01:14:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:48,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:14:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:48,073 INFO L225 Difference]: With dead ends: 2289 [2020-10-22 01:14:48,073 INFO L226 Difference]: Without dead ends: 2044 [2020-10-22 01:14:48,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-10-22 01:14:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2020-10-22 01:14:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2020-10-22 01:14:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 6008 transitions. [2020-10-22 01:14:48,131 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 6008 transitions. Word has length 4 [2020-10-22 01:14:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:48,131 INFO L481 AbstractCegarLoop]: Abstraction has 2044 states and 6008 transitions. [2020-10-22 01:14:48,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 6008 transitions. [2020-10-22 01:14:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:48,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:48,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:48,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-22 01:14:48,132 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:48,132 INFO L82 PathProgramCache]: Analyzing trace with hash 638858174, now seen corresponding path program 1 times [2020-10-22 01:14:48,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:48,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694640855] [2020-10-22 01:14:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:48,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694640855] [2020-10-22 01:14:48,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:48,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:48,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1267710052] [2020-10-22 01:14:48,159 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:48,159 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:48,160 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:14:48,160 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:48,161 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:48,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:48,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:48,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:48,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:48,162 INFO L87 Difference]: Start difference. First operand 2044 states and 6008 transitions. Second operand 4 states. [2020-10-22 01:14:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:48,207 INFO L93 Difference]: Finished difference Result 2379 states and 6766 transitions. [2020-10-22 01:14:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:48,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:14:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:48,224 INFO L225 Difference]: With dead ends: 2379 [2020-10-22 01:14:48,224 INFO L226 Difference]: Without dead ends: 2379 [2020-10-22 01:14:48,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2020-10-22 01:14:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2221. [2020-10-22 01:14:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2020-10-22 01:14:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6367 transitions. [2020-10-22 01:14:48,296 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6367 transitions. Word has length 10 [2020-10-22 01:14:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:48,297 INFO L481 AbstractCegarLoop]: Abstraction has 2221 states and 6367 transitions. [2020-10-22 01:14:48,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6367 transitions. [2020-10-22 01:14:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:14:48,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:48,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:48,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-22 01:14:48,298 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:48,298 INFO L82 PathProgramCache]: Analyzing trace with hash 250832522, now seen corresponding path program 1 times [2020-10-22 01:14:48,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:48,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356313454] [2020-10-22 01:14:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:48,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356313454] [2020-10-22 01:14:48,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650320154] [2020-10-22 01:14:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:48,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:14:48,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:48,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:48,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:14:48,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1346783695] [2020-10-22 01:14:48,470 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:48,472 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:48,475 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-22 01:14:48,475 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:48,527 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:48,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:48,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:48,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:48,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:48,528 INFO L87 Difference]: Start difference. First operand 2221 states and 6367 transitions. Second operand 4 states. [2020-10-22 01:14:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:48,571 INFO L93 Difference]: Finished difference Result 2219 states and 6362 transitions. [2020-10-22 01:14:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:48,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:14:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:48,586 INFO L225 Difference]: With dead ends: 2219 [2020-10-22 01:14:48,586 INFO L226 Difference]: Without dead ends: 2219 [2020-10-22 01:14:48,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-10-22 01:14:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2219. [2020-10-22 01:14:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-10-22 01:14:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 6362 transitions. [2020-10-22 01:14:48,652 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 6362 transitions. Word has length 17 [2020-10-22 01:14:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:48,653 INFO L481 AbstractCegarLoop]: Abstraction has 2219 states and 6362 transitions. [2020-10-22 01:14:48,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 6362 transitions. [2020-10-22 01:14:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:14:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:48,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:48,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-22 01:14:48,870 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1949300547, now seen corresponding path program 1 times [2020-10-22 01:14:48,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:48,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029978155] [2020-10-22 01:14:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:48,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029978155] [2020-10-22 01:14:48,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898765632] [2020-10-22 01:14:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:49,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:14:49,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:49,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:49,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:49,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [211207769] [2020-10-22 01:14:49,048 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:49,051 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:49,056 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 27 transitions. [2020-10-22 01:14:49,057 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:49,088 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:49,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:49,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:49,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:49,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:49,089 INFO L87 Difference]: Start difference. First operand 2219 states and 6362 transitions. Second operand 5 states. [2020-10-22 01:14:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:49,158 INFO L93 Difference]: Finished difference Result 2215 states and 6350 transitions. [2020-10-22 01:14:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:49,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-22 01:14:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:49,176 INFO L225 Difference]: With dead ends: 2215 [2020-10-22 01:14:49,176 INFO L226 Difference]: Without dead ends: 2215 [2020-10-22 01:14:49,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2020-10-22 01:14:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2215. [2020-10-22 01:14:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-10-22 01:14:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 6350 transitions. [2020-10-22 01:14:49,262 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 6350 transitions. Word has length 23 [2020-10-22 01:14:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:49,263 INFO L481 AbstractCegarLoop]: Abstraction has 2215 states and 6350 transitions. [2020-10-22 01:14:49,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 6350 transitions. [2020-10-22 01:14:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-22 01:14:49,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:49,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:49,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:49,478 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:49,479 INFO L82 PathProgramCache]: Analyzing trace with hash 918199823, now seen corresponding path program 1 times [2020-10-22 01:14:49,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:49,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116446548] [2020-10-22 01:14:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:49,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116446548] [2020-10-22 01:14:49,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958503805] [2020-10-22 01:14:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:49,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 01:14:49,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:49,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:49,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:49,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1655480593] [2020-10-22 01:14:49,709 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:49,718 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:49,728 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 33 transitions. [2020-10-22 01:14:49,729 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:49,767 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:49,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:49,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:49,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:49,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:49,768 INFO L87 Difference]: Start difference. First operand 2215 states and 6350 transitions. Second operand 6 states. [2020-10-22 01:14:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:49,847 INFO L93 Difference]: Finished difference Result 2207 states and 6322 transitions. [2020-10-22 01:14:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:14:49,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-22 01:14:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:49,867 INFO L225 Difference]: With dead ends: 2207 [2020-10-22 01:14:49,867 INFO L226 Difference]: Without dead ends: 2207 [2020-10-22 01:14:49,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-10-22 01:14:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2020-10-22 01:14:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2020-10-22 01:14:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 6322 transitions. [2020-10-22 01:14:49,936 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 6322 transitions. Word has length 29 [2020-10-22 01:14:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:49,936 INFO L481 AbstractCegarLoop]: Abstraction has 2207 states and 6322 transitions. [2020-10-22 01:14:49,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 6322 transitions. [2020-10-22 01:14:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-22 01:14:49,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:49,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:50,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:50,153 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:50,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:50,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2079190208, now seen corresponding path program 1 times [2020-10-22 01:14:50,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:50,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35776568] [2020-10-22 01:14:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:50,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35776568] [2020-10-22 01:14:50,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463867241] [2020-10-22 01:14:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:50,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:50,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:50,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:50,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:14:50,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [163046191] [2020-10-22 01:14:50,499 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:50,507 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:50,518 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 39 transitions. [2020-10-22 01:14:50,518 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:50,557 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:50,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:50,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:50,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:50,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:50,559 INFO L87 Difference]: Start difference. First operand 2207 states and 6322 transitions. Second operand 7 states. [2020-10-22 01:14:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:50,636 INFO L93 Difference]: Finished difference Result 2191 states and 6258 transitions. [2020-10-22 01:14:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:50,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-22 01:14:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:50,664 INFO L225 Difference]: With dead ends: 2191 [2020-10-22 01:14:50,664 INFO L226 Difference]: Without dead ends: 2191 [2020-10-22 01:14:50,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2020-10-22 01:14:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2191. [2020-10-22 01:14:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2191 states. [2020-10-22 01:14:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 6258 transitions. [2020-10-22 01:14:50,728 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 6258 transitions. Word has length 35 [2020-10-22 01:14:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:50,728 INFO L481 AbstractCegarLoop]: Abstraction has 2191 states and 6258 transitions. [2020-10-22 01:14:50,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 6258 transitions. [2020-10-22 01:14:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-22 01:14:50,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:50,730 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:50,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-22 01:14:50,946 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1878864971, now seen corresponding path program 1 times [2020-10-22 01:14:50,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:50,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024633301] [2020-10-22 01:14:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:50,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:14:50,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:14:50,996 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:14:50,996 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:14:50,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-22 01:14:50,997 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:14:50,997 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:14:50,998 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-22 01:14:51,006 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,007 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,008 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,009 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,010 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,010 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,010 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,010 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,010 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,010 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,011 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,011 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,011 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,011 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,011 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,011 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,012 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,012 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,012 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,012 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,012 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,012 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,014 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,014 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,014 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,014 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,015 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,015 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,015 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,016 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,017 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,017 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,017 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,018 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,019 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,019 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,019 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,019 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,020 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,020 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,020 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,020 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:51,025 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2020-10-22 01:14:51,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:14:51,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:51,026 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:51,026 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:51,026 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:51,026 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:51,026 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:51,026 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:51,026 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:51,028 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:51,028 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 123 transitions, 324 flow [2020-10-22 01:14:51,028 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 123 transitions, 324 flow [2020-10-22 01:14:51,028 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 123 transitions, 324 flow [2020-10-22 01:14:51,389 INFO L129 PetriNetUnfolder]: 464/2777 cut-off events. [2020-10-22 01:14:51,389 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-22 01:14:51,405 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3009 conditions, 2777 events. 464/2777 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 19290 event pairs, 72 based on Foata normal form. 0/2313 useless extension candidates. Maximal degree in co-relation 1529. Up to 192 conditions per place. [2020-10-22 01:14:51,453 INFO L116 LiptonReduction]: Number of co-enabled transitions 3384 [2020-10-22 01:14:53,876 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-22 01:14:54,027 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-22 01:14:54,419 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-10-22 01:14:54,563 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:14:54,864 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-22 01:14:55,024 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-22 01:14:55,029 INFO L131 LiptonReduction]: Checked pairs total: 6468 [2020-10-22 01:14:55,029 INFO L133 LiptonReduction]: Total number of compositions: 111 [2020-10-22 01:14:55,029 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 34 transitions, 146 flow [2020-10-22 01:14:55,294 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6529 states. [2020-10-22 01:14:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states. [2020-10-22 01:14:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:14:55,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:14:55,295 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash 45563258, now seen corresponding path program 1 times [2020-10-22 01:14:55,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136603656] [2020-10-22 01:14:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:55,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136603656] [2020-10-22 01:14:55,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:55,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:55,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1471207265] [2020-10-22 01:14:55,313 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:55,314 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:55,314 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:14:55,314 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,314 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:55,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:55,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:55,315 INFO L87 Difference]: Start difference. First operand 6529 states. Second operand 3 states. [2020-10-22 01:14:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,391 INFO L93 Difference]: Finished difference Result 6529 states and 21447 transitions. [2020-10-22 01:14:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:55,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:14:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,428 INFO L225 Difference]: With dead ends: 6529 [2020-10-22 01:14:55,428 INFO L226 Difference]: Without dead ends: 5798 [2020-10-22 01:14:55,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2020-10-22 01:14:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5798. [2020-10-22 01:14:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5798 states. [2020-10-22 01:14:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5798 states to 5798 states and 19258 transitions. [2020-10-22 01:14:55,619 INFO L78 Accepts]: Start accepts. Automaton has 5798 states and 19258 transitions. Word has length 4 [2020-10-22 01:14:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,619 INFO L481 AbstractCegarLoop]: Abstraction has 5798 states and 19258 transitions. [2020-10-22 01:14:55,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5798 states and 19258 transitions. [2020-10-22 01:14:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:55,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:55,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-22 01:14:55,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 415754513, now seen corresponding path program 1 times [2020-10-22 01:14:55,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61627851] [2020-10-22 01:14:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:55,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61627851] [2020-10-22 01:14:55,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:55,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:55,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2146764969] [2020-10-22 01:14:55,661 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:55,662 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:55,663 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:14:55,663 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,663 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:55,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:55,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:55,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:55,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:55,665 INFO L87 Difference]: Start difference. First operand 5798 states and 19258 transitions. Second operand 4 states. [2020-10-22 01:14:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,827 INFO L93 Difference]: Finished difference Result 6779 states and 21955 transitions. [2020-10-22 01:14:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:55,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:14:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,852 INFO L225 Difference]: With dead ends: 6779 [2020-10-22 01:14:55,852 INFO L226 Difference]: Without dead ends: 6779 [2020-10-22 01:14:55,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2020-10-22 01:14:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6397. [2020-10-22 01:14:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6397 states. [2020-10-22 01:14:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 20804 transitions. [2020-10-22 01:14:56,094 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 20804 transitions. Word has length 10 [2020-10-22 01:14:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:56,094 INFO L481 AbstractCegarLoop]: Abstraction has 6397 states and 20804 transitions. [2020-10-22 01:14:56,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 20804 transitions. [2020-10-22 01:14:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:14:56,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:56,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:56,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-22 01:14:56,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:56,097 INFO L82 PathProgramCache]: Analyzing trace with hash -178148465, now seen corresponding path program 1 times [2020-10-22 01:14:56,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:56,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662020514] [2020-10-22 01:14:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:56,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662020514] [2020-10-22 01:14:56,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265723055] [2020-10-22 01:14:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:14:56,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:56,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:56,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:14:56,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2094465714] [2020-10-22 01:14:56,276 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:56,278 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:56,282 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-22 01:14:56,283 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:56,343 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:56,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:56,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:56,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:56,344 INFO L87 Difference]: Start difference. First operand 6397 states and 20804 transitions. Second operand 4 states. [2020-10-22 01:14:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:56,408 INFO L93 Difference]: Finished difference Result 6395 states and 20799 transitions. [2020-10-22 01:14:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:56,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:14:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:56,436 INFO L225 Difference]: With dead ends: 6395 [2020-10-22 01:14:56,436 INFO L226 Difference]: Without dead ends: 6395 [2020-10-22 01:14:56,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6395 states. [2020-10-22 01:14:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6395 to 6395. [2020-10-22 01:14:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6395 states. [2020-10-22 01:14:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6395 states to 6395 states and 20799 transitions. [2020-10-22 01:14:56,647 INFO L78 Accepts]: Start accepts. Automaton has 6395 states and 20799 transitions. Word has length 17 [2020-10-22 01:14:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:56,647 INFO L481 AbstractCegarLoop]: Abstraction has 6395 states and 20799 transitions. [2020-10-22 01:14:56,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6395 states and 20799 transitions. [2020-10-22 01:14:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:14:56,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:56,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:56,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-22 01:14:56,862 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:56,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:56,862 INFO L82 PathProgramCache]: Analyzing trace with hash -650417275, now seen corresponding path program 1 times [2020-10-22 01:14:56,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:56,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464444183] [2020-10-22 01:14:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:56,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464444183] [2020-10-22 01:14:56,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239422437] [2020-10-22 01:14:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:14:56,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:57,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:57,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:57,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1344888717] [2020-10-22 01:14:57,027 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:57,030 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:57,035 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 27 transitions. [2020-10-22 01:14:57,035 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:57,057 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:57,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:57,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:57,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:57,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:57,058 INFO L87 Difference]: Start difference. First operand 6395 states and 20799 transitions. Second operand 5 states. [2020-10-22 01:14:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:57,133 INFO L93 Difference]: Finished difference Result 6391 states and 20787 transitions. [2020-10-22 01:14:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:57,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-22 01:14:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:57,160 INFO L225 Difference]: With dead ends: 6391 [2020-10-22 01:14:57,160 INFO L226 Difference]: Without dead ends: 6391 [2020-10-22 01:14:57,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2020-10-22 01:14:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6391. [2020-10-22 01:14:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6391 states. [2020-10-22 01:14:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6391 states to 6391 states and 20787 transitions. [2020-10-22 01:14:57,444 INFO L78 Accepts]: Start accepts. Automaton has 6391 states and 20787 transitions. Word has length 23 [2020-10-22 01:14:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:57,444 INFO L481 AbstractCegarLoop]: Abstraction has 6391 states and 20787 transitions. [2020-10-22 01:14:57,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6391 states and 20787 transitions. [2020-10-22 01:14:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-22 01:14:57,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:57,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:57,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-22 01:14:57,661 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1501069402, now seen corresponding path program 1 times [2020-10-22 01:14:57,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:57,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393962811] [2020-10-22 01:14:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:57,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393962811] [2020-10-22 01:14:57,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466924205] [2020-10-22 01:14:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:57,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 01:14:57,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:57,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:57,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:57,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688264146] [2020-10-22 01:14:57,875 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:57,880 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:57,887 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 33 transitions. [2020-10-22 01:14:57,887 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:57,916 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:57,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:57,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:57,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:57,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:57,918 INFO L87 Difference]: Start difference. First operand 6391 states and 20787 transitions. Second operand 6 states. [2020-10-22 01:14:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:58,002 INFO L93 Difference]: Finished difference Result 6383 states and 20759 transitions. [2020-10-22 01:14:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:14:58,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-22 01:14:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:58,027 INFO L225 Difference]: With dead ends: 6383 [2020-10-22 01:14:58,027 INFO L226 Difference]: Without dead ends: 6383 [2020-10-22 01:14:58,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:58,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2020-10-22 01:14:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6383. [2020-10-22 01:14:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6383 states. [2020-10-22 01:14:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 20759 transitions. [2020-10-22 01:14:58,224 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 20759 transitions. Word has length 29 [2020-10-22 01:14:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:58,224 INFO L481 AbstractCegarLoop]: Abstraction has 6383 states and 20759 transitions. [2020-10-22 01:14:58,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 20759 transitions. [2020-10-22 01:14:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-22 01:14:58,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:58,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:58,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:58,442 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:58,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2652466, now seen corresponding path program 1 times [2020-10-22 01:14:58,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:58,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101893548] [2020-10-22 01:14:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:58,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101893548] [2020-10-22 01:14:58,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087906569] [2020-10-22 01:14:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:58,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:58,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:14:58,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:58,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:14:58,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1916251311] [2020-10-22 01:14:58,690 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:58,702 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:58,716 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 39 transitions. [2020-10-22 01:14:58,717 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:58,746 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:58,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:58,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:58,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:58,748 INFO L87 Difference]: Start difference. First operand 6383 states and 20759 transitions. Second operand 7 states. [2020-10-22 01:14:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:58,865 INFO L93 Difference]: Finished difference Result 6367 states and 20695 transitions. [2020-10-22 01:14:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:58,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-22 01:14:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:58,899 INFO L225 Difference]: With dead ends: 6367 [2020-10-22 01:14:58,900 INFO L226 Difference]: Without dead ends: 6367 [2020-10-22 01:14:58,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2020-10-22 01:14:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6367. [2020-10-22 01:14:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6367 states. [2020-10-22 01:14:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6367 states to 6367 states and 20695 transitions. [2020-10-22 01:14:59,718 INFO L78 Accepts]: Start accepts. Automaton has 6367 states and 20695 transitions. Word has length 35 [2020-10-22 01:14:59,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:59,718 INFO L481 AbstractCegarLoop]: Abstraction has 6367 states and 20695 transitions. [2020-10-22 01:14:59,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:59,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6367 states and 20695 transitions. [2020-10-22 01:14:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-22 01:14:59,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:59,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:59,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:59,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2007069791, now seen corresponding path program 1 times [2020-10-22 01:14:59,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:59,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171620768] [2020-10-22 01:14:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:00,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171620768] [2020-10-22 01:15:00,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985918085] [2020-10-22 01:15:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:00,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:15:00,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:00,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:00,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:15:00,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1548015081] [2020-10-22 01:15:00,239 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:00,249 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:00,263 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 45 transitions. [2020-10-22 01:15:00,264 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:00,285 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:00,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:00,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:00,286 INFO L87 Difference]: Start difference. First operand 6367 states and 20695 transitions. Second operand 8 states. [2020-10-22 01:15:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:00,374 INFO L93 Difference]: Finished difference Result 6335 states and 20551 transitions. [2020-10-22 01:15:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 01:15:00,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-22 01:15:00,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:00,394 INFO L225 Difference]: With dead ends: 6335 [2020-10-22 01:15:00,394 INFO L226 Difference]: Without dead ends: 6335 [2020-10-22 01:15:00,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2020-10-22 01:15:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6335. [2020-10-22 01:15:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6335 states. [2020-10-22 01:15:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 20551 transitions. [2020-10-22 01:15:00,589 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 20551 transitions. Word has length 41 [2020-10-22 01:15:00,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:00,589 INFO L481 AbstractCegarLoop]: Abstraction has 6335 states and 20551 transitions. [2020-10-22 01:15:00,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 20551 transitions. [2020-10-22 01:15:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-22 01:15:00,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:00,592 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:00,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:00,808 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:00,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1300097055, now seen corresponding path program 1 times [2020-10-22 01:15:00,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:00,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775215595] [2020-10-22 01:15:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:15:00,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:15:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:15:00,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:15:00,875 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:15:00,875 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:15:00,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-22 01:15:00,876 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:15:00,876 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:15:00,877 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-22 01:15:00,886 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,886 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,886 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,886 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,886 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,887 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,888 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,889 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,889 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,889 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,889 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,889 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,889 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,890 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,891 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,892 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,892 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,892 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,892 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,892 WARN L313 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,893 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,894 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,894 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,895 WARN L313 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,895 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,896 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,896 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,896 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,897 WARN L313 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,898 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,898 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,898 WARN L313 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,898 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,900 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,900 WARN L313 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,900 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,900 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,901 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,901 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,901 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,901 WARN L313 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,902 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,902 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,903 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,903 WARN L313 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:00,909 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2020-10-22 01:15:00,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:15:00,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:15:00,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:15:00,910 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:15:00,910 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:15:00,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:15:00,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:15:00,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:15:00,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:15:00,912 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:15:00,912 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 129 transitions, 356 flow [2020-10-22 01:15:00,912 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 129 transitions, 356 flow [2020-10-22 01:15:00,913 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 129 places, 129 transitions, 356 flow [2020-10-22 01:15:01,754 INFO L129 PetriNetUnfolder]: 978/5484 cut-off events. [2020-10-22 01:15:01,754 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-22 01:15:01,779 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 5484 events. 978/5484 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 46044 event pairs, 201 based on Foata normal form. 0/4570 useless extension candidates. Maximal degree in co-relation 2995. Up to 448 conditions per place. [2020-10-22 01:15:01,884 INFO L116 LiptonReduction]: Number of co-enabled transitions 4144 [2020-10-22 01:15:04,019 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-22 01:15:04,252 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-22 01:15:04,362 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-22 01:15:04,719 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-10-22 01:15:04,879 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-22 01:15:05,242 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-22 01:15:05,409 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:15:05,426 INFO L131 LiptonReduction]: Checked pairs total: 9247 [2020-10-22 01:15:05,427 INFO L133 LiptonReduction]: Total number of compositions: 119 [2020-10-22 01:15:05,427 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 37 transitions, 172 flow [2020-10-22 01:15:06,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18897 states. [2020-10-22 01:15:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 18897 states. [2020-10-22 01:15:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:15:06,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:06,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:15:06,765 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash 53374111, now seen corresponding path program 1 times [2020-10-22 01:15:06,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:06,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56489363] [2020-10-22 01:15:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:06,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56489363] [2020-10-22 01:15:06,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:15:06,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:15:06,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [740638111] [2020-10-22 01:15:06,796 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:06,796 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:06,796 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:15:06,796 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:06,797 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:06,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:15:06,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:15:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:15:06,798 INFO L87 Difference]: Start difference. First operand 18897 states. Second operand 3 states. [2020-10-22 01:15:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:06,951 INFO L93 Difference]: Finished difference Result 18897 states and 69116 transitions. [2020-10-22 01:15:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:15:06,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:15:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:07,002 INFO L225 Difference]: With dead ends: 18897 [2020-10-22 01:15:07,003 INFO L226 Difference]: Without dead ends: 16708 [2020-10-22 01:15:07,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:15:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16708 states. [2020-10-22 01:15:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16708 to 16708. [2020-10-22 01:15:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16708 states. [2020-10-22 01:15:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16708 states to 16708 states and 61824 transitions. [2020-10-22 01:15:07,568 INFO L78 Accepts]: Start accepts. Automaton has 16708 states and 61824 transitions. Word has length 4 [2020-10-22 01:15:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:07,568 INFO L481 AbstractCegarLoop]: Abstraction has 16708 states and 61824 transitions. [2020-10-22 01:15:07,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:15:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 16708 states and 61824 transitions. [2020-10-22 01:15:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:15:07,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:07,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:07,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-22 01:15:07,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash 285951404, now seen corresponding path program 1 times [2020-10-22 01:15:07,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:07,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053497354] [2020-10-22 01:15:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:15:07,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053497354] [2020-10-22 01:15:07,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:15:07,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:15:07,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2035435442] [2020-10-22 01:15:07,604 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:07,605 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:07,605 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:15:07,606 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:07,606 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:07,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:15:07,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:07,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:15:07,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:15:07,608 INFO L87 Difference]: Start difference. First operand 16708 states and 61824 transitions. Second operand 4 states. [2020-10-22 01:15:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:08,738 INFO L93 Difference]: Finished difference Result 19531 states and 70840 transitions. [2020-10-22 01:15:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:15:08,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:15:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:08,791 INFO L225 Difference]: With dead ends: 19531 [2020-10-22 01:15:08,791 INFO L226 Difference]: Without dead ends: 19531 [2020-10-22 01:15:08,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:15:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19531 states. [2020-10-22 01:15:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19531 to 18637. [2020-10-22 01:15:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18637 states. [2020-10-22 01:15:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18637 states to 18637 states and 67705 transitions. [2020-10-22 01:15:09,356 INFO L78 Accepts]: Start accepts. Automaton has 18637 states and 67705 transitions. Word has length 10 [2020-10-22 01:15:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:09,356 INFO L481 AbstractCegarLoop]: Abstraction has 18637 states and 67705 transitions. [2020-10-22 01:15:09,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:15:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 18637 states and 67705 transitions. [2020-10-22 01:15:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:15:09,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:09,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:09,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-22 01:15:09,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:09,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:09,357 INFO L82 PathProgramCache]: Analyzing trace with hash -842139471, now seen corresponding path program 1 times [2020-10-22 01:15:09,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:09,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278017152] [2020-10-22 01:15:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:09,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278017152] [2020-10-22 01:15:09,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38805678] [2020-10-22 01:15:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:09,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:15:09,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:09,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:09,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:15:09,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1548820297] [2020-10-22 01:15:09,502 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:09,505 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:09,507 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-22 01:15:09,508 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:09,567 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:09,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:15:09,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:09,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:15:09,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:15:09,568 INFO L87 Difference]: Start difference. First operand 18637 states and 67705 transitions. Second operand 4 states. [2020-10-22 01:15:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:09,673 INFO L93 Difference]: Finished difference Result 18635 states and 67700 transitions. [2020-10-22 01:15:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:15:09,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:15:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:09,718 INFO L225 Difference]: With dead ends: 18635 [2020-10-22 01:15:09,718 INFO L226 Difference]: Without dead ends: 18635 [2020-10-22 01:15:09,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:15:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18635 states. [2020-10-22 01:15:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18635 to 18635. [2020-10-22 01:15:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18635 states. [2020-10-22 01:15:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18635 states to 18635 states and 67700 transitions. [2020-10-22 01:15:10,408 INFO L78 Accepts]: Start accepts. Automaton has 18635 states and 67700 transitions. Word has length 17 [2020-10-22 01:15:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:10,409 INFO L481 AbstractCegarLoop]: Abstraction has 18635 states and 67700 transitions. [2020-10-22 01:15:10,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:15:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 18635 states and 67700 transitions. [2020-10-22 01:15:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:15:10,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:10,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:10,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-22 01:15:10,610 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:10,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1100716835, now seen corresponding path program 1 times [2020-10-22 01:15:10,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:10,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128486008] [2020-10-22 01:15:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:10,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128486008] [2020-10-22 01:15:10,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117740345] [2020-10-22 01:15:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:10,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:15:10,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:10,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:10,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:15:10,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1631915506] [2020-10-22 01:15:10,770 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:10,774 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:10,779 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 27 transitions. [2020-10-22 01:15:10,779 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:10,815 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:10,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:15:10,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:15:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:15:10,816 INFO L87 Difference]: Start difference. First operand 18635 states and 67700 transitions. Second operand 5 states. [2020-10-22 01:15:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:10,928 INFO L93 Difference]: Finished difference Result 18631 states and 67688 transitions. [2020-10-22 01:15:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:15:10,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-22 01:15:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:10,971 INFO L225 Difference]: With dead ends: 18631 [2020-10-22 01:15:10,971 INFO L226 Difference]: Without dead ends: 18631 [2020-10-22 01:15:10,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:15:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18631 states. [2020-10-22 01:15:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18631 to 18631. [2020-10-22 01:15:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18631 states. [2020-10-22 01:15:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18631 states to 18631 states and 67688 transitions. [2020-10-22 01:15:11,399 INFO L78 Accepts]: Start accepts. Automaton has 18631 states and 67688 transitions. Word has length 23 [2020-10-22 01:15:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:11,399 INFO L481 AbstractCegarLoop]: Abstraction has 18631 states and 67688 transitions. [2020-10-22 01:15:11,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:15:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 18631 states and 67688 transitions. [2020-10-22 01:15:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-22 01:15:11,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:11,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:11,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-22 01:15:11,615 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:11,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1497520792, now seen corresponding path program 1 times [2020-10-22 01:15:11,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:11,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615818698] [2020-10-22 01:15:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:11,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615818698] [2020-10-22 01:15:11,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250301735] [2020-10-22 01:15:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:11,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 01:15:11,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:11,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:11,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:15:11,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [208014062] [2020-10-22 01:15:11,945 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:11,950 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:11,958 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 33 transitions. [2020-10-22 01:15:11,958 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:11,980 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:11,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:15:11,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:15:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:15:11,982 INFO L87 Difference]: Start difference. First operand 18631 states and 67688 transitions. Second operand 6 states. [2020-10-22 01:15:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:12,114 INFO L93 Difference]: Finished difference Result 18623 states and 67660 transitions. [2020-10-22 01:15:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:15:12,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-22 01:15:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:12,163 INFO L225 Difference]: With dead ends: 18623 [2020-10-22 01:15:12,164 INFO L226 Difference]: Without dead ends: 18623 [2020-10-22 01:15:12,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:15:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18623 states. [2020-10-22 01:15:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18623 to 18623. [2020-10-22 01:15:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18623 states. [2020-10-22 01:15:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18623 states to 18623 states and 67660 transitions. [2020-10-22 01:15:12,610 INFO L78 Accepts]: Start accepts. Automaton has 18623 states and 67660 transitions. Word has length 29 [2020-10-22 01:15:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:12,610 INFO L481 AbstractCegarLoop]: Abstraction has 18623 states and 67660 transitions. [2020-10-22 01:15:12,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:15:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18623 states and 67660 transitions. [2020-10-22 01:15:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-22 01:15:12,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:12,612 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:12,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-22 01:15:12,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:12,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2010822418, now seen corresponding path program 1 times [2020-10-22 01:15:12,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:12,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342727292] [2020-10-22 01:15:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:12,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342727292] [2020-10-22 01:15:12,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275331237] [2020-10-22 01:15:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:12,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:15:12,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:13,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:13,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:13,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1131526386] [2020-10-22 01:15:13,068 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:13,076 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:13,088 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 39 transitions. [2020-10-22 01:15:13,088 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:13,110 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:13,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:15:13,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:13,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:15:13,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:15:13,112 INFO L87 Difference]: Start difference. First operand 18623 states and 67660 transitions. Second operand 7 states. [2020-10-22 01:15:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:13,248 INFO L93 Difference]: Finished difference Result 18607 states and 67596 transitions. [2020-10-22 01:15:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:15:13,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-22 01:15:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:13,292 INFO L225 Difference]: With dead ends: 18607 [2020-10-22 01:15:13,293 INFO L226 Difference]: Without dead ends: 18607 [2020-10-22 01:15:13,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:15:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18607 states. [2020-10-22 01:15:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18607 to 18607. [2020-10-22 01:15:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18607 states. [2020-10-22 01:15:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18607 states to 18607 states and 67596 transitions. [2020-10-22 01:15:13,927 INFO L78 Accepts]: Start accepts. Automaton has 18607 states and 67596 transitions. Word has length 35 [2020-10-22 01:15:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:13,927 INFO L481 AbstractCegarLoop]: Abstraction has 18607 states and 67596 transitions. [2020-10-22 01:15:13,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:15:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 18607 states and 67596 transitions. [2020-10-22 01:15:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-22 01:15:13,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:13,932 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:14,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-22 01:15:14,147 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1313077605, now seen corresponding path program 1 times [2020-10-22 01:15:14,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:14,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389253977] [2020-10-22 01:15:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:14,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389253977] [2020-10-22 01:15:14,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014669460] [2020-10-22 01:15:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:14,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:15:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:14,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:14,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:15:14,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1681826979] [2020-10-22 01:15:14,400 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:14,409 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:14,427 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 45 transitions. [2020-10-22 01:15:14,428 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:14,459 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:14,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:14,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:14,460 INFO L87 Difference]: Start difference. First operand 18607 states and 67596 transitions. Second operand 8 states. [2020-10-22 01:15:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:14,599 INFO L93 Difference]: Finished difference Result 18575 states and 67452 transitions. [2020-10-22 01:15:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 01:15:14,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-22 01:15:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:14,639 INFO L225 Difference]: With dead ends: 18575 [2020-10-22 01:15:14,639 INFO L226 Difference]: Without dead ends: 18575 [2020-10-22 01:15:14,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18575 states. [2020-10-22 01:15:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18575 to 18575. [2020-10-22 01:15:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18575 states. [2020-10-22 01:15:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18575 states to 18575 states and 67452 transitions. [2020-10-22 01:15:15,062 INFO L78 Accepts]: Start accepts. Automaton has 18575 states and 67452 transitions. Word has length 41 [2020-10-22 01:15:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:15,063 INFO L481 AbstractCegarLoop]: Abstraction has 18575 states and 67452 transitions. [2020-10-22 01:15:15,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18575 states and 67452 transitions. [2020-10-22 01:15:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-22 01:15:15,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:15,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:15,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-22 01:15:15,288 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1576177469, now seen corresponding path program 1 times [2020-10-22 01:15:15,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:15,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654881095] [2020-10-22 01:15:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:15,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654881095] [2020-10-22 01:15:15,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696938744] [2020-10-22 01:15:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:15,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:15,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:15,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:15,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-22 01:15:15,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [526227827] [2020-10-22 01:15:15,736 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:15,745 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:15,763 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 51 transitions. [2020-10-22 01:15:15,764 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:15,792 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:15,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:15,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:15,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:15,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=135, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:15:15,793 INFO L87 Difference]: Start difference. First operand 18575 states and 67452 transitions. Second operand 9 states. [2020-10-22 01:15:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:15,931 INFO L93 Difference]: Finished difference Result 18511 states and 67132 transitions. [2020-10-22 01:15:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:15:15,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-22 01:15:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:15,975 INFO L225 Difference]: With dead ends: 18511 [2020-10-22 01:15:15,975 INFO L226 Difference]: Without dead ends: 18511 [2020-10-22 01:15:15,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=135, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:15:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18511 states. [2020-10-22 01:15:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18511 to 18511. [2020-10-22 01:15:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18511 states. [2020-10-22 01:15:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18511 states to 18511 states and 67132 transitions. [2020-10-22 01:15:16,379 INFO L78 Accepts]: Start accepts. Automaton has 18511 states and 67132 transitions. Word has length 47 [2020-10-22 01:15:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:16,380 INFO L481 AbstractCegarLoop]: Abstraction has 18511 states and 67132 transitions. [2020-10-22 01:15:16,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 18511 states and 67132 transitions. [2020-10-22 01:15:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-22 01:15:16,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:16,383 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:16,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:16,584 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash -914889217, now seen corresponding path program 1 times [2020-10-22 01:15:16,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:16,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245063320] [2020-10-22 01:15:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:15:16,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:15:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:15:16,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:15:16,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:15:16,634 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:15:16,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-22 01:15:16,634 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:15:16,635 WARN L371 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:15:16,635 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-10-22 01:15:16,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,646 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,646 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,647 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,647 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,649 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,652 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,652 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,652 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,652 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,652 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,652 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,653 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,653 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,653 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,653 WARN L313 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,654 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,654 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,654 WARN L313 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,655 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,656 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,656 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,656 WARN L313 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,656 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,657 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,657 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,657 WARN L313 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,658 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,659 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,659 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,659 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,659 WARN L313 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,660 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,660 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,660 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,661 WARN L313 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,662 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,662 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,662 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,662 WARN L313 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,663 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,663 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,663 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,663 WARN L313 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:15:16,669 INFO L149 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2020-10-22 01:15:16,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:15:16,670 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:15:16,670 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:15:16,670 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:15:16,670 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:15:16,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:15:16,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:15:16,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:15:16,671 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:15:16,672 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:15:16,672 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 135 transitions, 390 flow [2020-10-22 01:15:16,672 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 135 transitions, 390 flow [2020-10-22 01:15:16,672 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 136 places, 135 transitions, 390 flow [2020-10-22 01:15:18,130 INFO L129 PetriNetUnfolder]: 2068/10943 cut-off events. [2020-10-22 01:15:18,131 INFO L130 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2020-10-22 01:15:18,181 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12028 conditions, 10943 events. 2068/10943 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 107203 event pairs, 522 based on Foata normal form. 0/9131 useless extension candidates. Maximal degree in co-relation 5966. Up to 1024 conditions per place. [2020-10-22 01:15:18,393 INFO L116 LiptonReduction]: Number of co-enabled transitions 4960 [2020-10-22 01:15:20,607 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-22 01:15:20,878 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-22 01:15:21,346 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-22 01:15:21,529 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-22 01:15:21,535 INFO L131 LiptonReduction]: Checked pairs total: 11001 [2020-10-22 01:15:21,536 INFO L133 LiptonReduction]: Total number of compositions: 118 [2020-10-22 01:15:21,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 40 transitions, 200 flow [2020-10-22 01:15:28,832 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 55297 states. [2020-10-22 01:15:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 55297 states. [2020-10-22 01:15:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:15:28,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:28,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:15:28,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:28,833 INFO L82 PathProgramCache]: Analyzing trace with hash 61347390, now seen corresponding path program 1 times [2020-10-22 01:15:28,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:28,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693665176] [2020-10-22 01:15:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:28,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693665176] [2020-10-22 01:15:28,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:15:28,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:15:28,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [73513866] [2020-10-22 01:15:28,872 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:28,873 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:28,873 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:15:28,873 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:28,873 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:28,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:15:28,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:28,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:15:28,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:15:28,875 INFO L87 Difference]: Start difference. First operand 55297 states. Second operand 3 states. [2020-10-22 01:15:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:29,231 INFO L93 Difference]: Finished difference Result 55297 states and 222749 transitions. [2020-10-22 01:15:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:15:29,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:15:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:29,403 INFO L225 Difference]: With dead ends: 55297 [2020-10-22 01:15:29,403 INFO L226 Difference]: Without dead ends: 48734 [2020-10-22 01:15:29,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:15:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48734 states. [2020-10-22 01:15:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48734 to 48734. [2020-10-22 01:15:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48734 states. [2020-10-22 01:15:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48734 states to 48734 states and 198690 transitions. [2020-10-22 01:15:32,892 INFO L78 Accepts]: Start accepts. Automaton has 48734 states and 198690 transitions. Word has length 4 [2020-10-22 01:15:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:32,893 INFO L481 AbstractCegarLoop]: Abstraction has 48734 states and 198690 transitions. [2020-10-22 01:15:32,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:15:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 48734 states and 198690 transitions. [2020-10-22 01:15:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:15:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:32,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:32,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-22 01:15:32,894 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2108271103, now seen corresponding path program 1 times [2020-10-22 01:15:32,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:32,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281707980] [2020-10-22 01:15:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:15:32,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281707980] [2020-10-22 01:15:32,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:15:32,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:15:32,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [969053361] [2020-10-22 01:15:32,918 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:32,919 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:32,919 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:15:32,919 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:32,920 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:32,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:15:32,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:15:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:15:32,920 INFO L87 Difference]: Start difference. First operand 48734 states and 198690 transitions. Second operand 4 states. [2020-10-22 01:15:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:33,272 INFO L93 Difference]: Finished difference Result 56827 states and 227865 transitions. [2020-10-22 01:15:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:15:33,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:15:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:33,456 INFO L225 Difference]: With dead ends: 56827 [2020-10-22 01:15:33,456 INFO L226 Difference]: Without dead ends: 56827 [2020-10-22 01:15:33,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:15:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56827 states. [2020-10-22 01:15:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56827 to 54781. [2020-10-22 01:15:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54781 states. [2020-10-22 01:15:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54781 states to 54781 states and 219674 transitions. [2020-10-22 01:15:37,704 INFO L78 Accepts]: Start accepts. Automaton has 54781 states and 219674 transitions. Word has length 10 [2020-10-22 01:15:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:37,705 INFO L481 AbstractCegarLoop]: Abstraction has 54781 states and 219674 transitions. [2020-10-22 01:15:37,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:15:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 54781 states and 219674 transitions. [2020-10-22 01:15:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:15:37,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:37,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:37,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-22 01:15:37,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:37,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1633586386, now seen corresponding path program 1 times [2020-10-22 01:15:37,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:37,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303856540] [2020-10-22 01:15:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:37,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303856540] [2020-10-22 01:15:37,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158911247] [2020-10-22 01:15:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:37,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:15:37,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:37,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:37,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:15:37,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [979527264] [2020-10-22 01:15:37,838 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:37,840 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:37,842 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-22 01:15:37,842 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:37,843 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:37,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:15:37,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:15:37,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:15:37,844 INFO L87 Difference]: Start difference. First operand 54781 states and 219674 transitions. Second operand 4 states. [2020-10-22 01:15:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:38,740 INFO L93 Difference]: Finished difference Result 54779 states and 219669 transitions. [2020-10-22 01:15:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:15:38,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:15:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:38,903 INFO L225 Difference]: With dead ends: 54779 [2020-10-22 01:15:38,903 INFO L226 Difference]: Without dead ends: 54779 [2020-10-22 01:15:38,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:15:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54779 states. [2020-10-22 01:15:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54779 to 54779. [2020-10-22 01:15:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54779 states. [2020-10-22 01:15:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54779 states to 54779 states and 219669 transitions. [2020-10-22 01:15:44,210 INFO L78 Accepts]: Start accepts. Automaton has 54779 states and 219669 transitions. Word has length 17 [2020-10-22 01:15:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:44,210 INFO L481 AbstractCegarLoop]: Abstraction has 54779 states and 219669 transitions. [2020-10-22 01:15:44,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:15:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 54779 states and 219669 transitions. [2020-10-22 01:15:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:15:44,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:44,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:44,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-22 01:15:44,419 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash -14876094, now seen corresponding path program 1 times [2020-10-22 01:15:44,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:44,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087731784] [2020-10-22 01:15:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:44,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087731784] [2020-10-22 01:15:44,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190399276] [2020-10-22 01:15:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:44,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:15:44,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:44,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:44,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:15:44,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1569518642] [2020-10-22 01:15:44,586 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:44,590 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:44,594 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 27 transitions. [2020-10-22 01:15:44,595 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:44,613 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [594359#(<= (+ ULTIMATE.start_main_~tid~0 16) ~SIGMA~0)] [2020-10-22 01:15:44,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:15:44,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:15:44,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:15:44,614 INFO L87 Difference]: Start difference. First operand 54779 states and 219669 transitions. Second operand 6 states. [2020-10-22 01:15:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:44,926 INFO L93 Difference]: Finished difference Result 54775 states and 219657 transitions. [2020-10-22 01:15:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:15:44,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-22 01:15:44,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:45,085 INFO L225 Difference]: With dead ends: 54775 [2020-10-22 01:15:45,086 INFO L226 Difference]: Without dead ends: 54775 [2020-10-22 01:15:45,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:15:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54775 states. [2020-10-22 01:15:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54775 to 54775. [2020-10-22 01:15:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54775 states. [2020-10-22 01:15:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54775 states to 54775 states and 219657 transitions. [2020-10-22 01:15:47,135 INFO L78 Accepts]: Start accepts. Automaton has 54775 states and 219657 transitions. Word has length 23 [2020-10-22 01:15:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:47,136 INFO L481 AbstractCegarLoop]: Abstraction has 54775 states and 219657 transitions. [2020-10-22 01:15:47,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:15:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 54775 states and 219657 transitions. [2020-10-22 01:15:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-22 01:15:47,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:47,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:47,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:47,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:47,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1259232509, now seen corresponding path program 1 times [2020-10-22 01:15:47,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:47,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748047287] [2020-10-22 01:15:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:47,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748047287] [2020-10-22 01:15:47,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913123342] [2020-10-22 01:15:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:47,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 01:15:47,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:47,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:47,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:15:47,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [295944114] [2020-10-22 01:15:47,527 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:47,551 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:47,573 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 33 transitions. [2020-10-22 01:15:47,573 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:47,592 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [758779#(<= (+ ULTIMATE.start_main_~tid~0 16) ~SIGMA~0)] [2020-10-22 01:15:47,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:15:47,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:47,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:15:47,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:15:47,594 INFO L87 Difference]: Start difference. First operand 54775 states and 219657 transitions. Second operand 7 states. [2020-10-22 01:15:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:48,238 INFO L93 Difference]: Finished difference Result 54767 states and 219629 transitions. [2020-10-22 01:15:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:15:48,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-22 01:15:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:48,507 INFO L225 Difference]: With dead ends: 54767 [2020-10-22 01:15:48,507 INFO L226 Difference]: Without dead ends: 54767 [2020-10-22 01:15:48,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:15:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54767 states. [2020-10-22 01:15:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54767 to 54767. [2020-10-22 01:15:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54767 states. [2020-10-22 01:15:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54767 states to 54767 states and 219629 transitions. [2020-10-22 01:15:51,590 INFO L78 Accepts]: Start accepts. Automaton has 54767 states and 219629 transitions. Word has length 29 [2020-10-22 01:15:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:51,590 INFO L481 AbstractCegarLoop]: Abstraction has 54767 states and 219629 transitions. [2020-10-22 01:15:51,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:15:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 54767 states and 219629 transitions. [2020-10-22 01:15:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-22 01:15:51,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:51,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:51,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-22 01:15:51,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:51,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1978493853, now seen corresponding path program 1 times [2020-10-22 01:15:51,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:51,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384574181] [2020-10-22 01:15:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:51,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384574181] [2020-10-22 01:15:51,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841124982] [2020-10-22 01:15:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:51,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:15:51,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:52,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:52,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:52,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1494795295] [2020-10-22 01:15:52,030 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:52,036 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:52,044 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 39 transitions. [2020-10-22 01:15:52,045 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:52,057 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [923195#(<= (+ ULTIMATE.start_main_~tid~0 16) ~SIGMA~0)] [2020-10-22 01:15:52,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:52,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:52,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:52,058 INFO L87 Difference]: Start difference. First operand 54767 states and 219629 transitions. Second operand 8 states. [2020-10-22 01:15:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:52,375 INFO L93 Difference]: Finished difference Result 54751 states and 219565 transitions. [2020-10-22 01:15:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:15:52,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-22 01:15:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:52,528 INFO L225 Difference]: With dead ends: 54751 [2020-10-22 01:15:52,528 INFO L226 Difference]: Without dead ends: 54751 [2020-10-22 01:15:52,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54751 states. [2020-10-22 01:15:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54751 to 54751. [2020-10-22 01:15:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54751 states. [2020-10-22 01:15:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54751 states to 54751 states and 219565 transitions. [2020-10-22 01:15:54,743 INFO L78 Accepts]: Start accepts. Automaton has 54751 states and 219565 transitions. Word has length 35 [2020-10-22 01:15:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 54751 states and 219565 transitions. [2020-10-22 01:15:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 54751 states and 219565 transitions. [2020-10-22 01:15:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-22 01:15:54,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:54,746 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:54,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-22 01:15:54,957 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:54,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1560108254, now seen corresponding path program 1 times [2020-10-22 01:15:54,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:54,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902300971] [2020-10-22 01:15:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:55,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902300971] [2020-10-22 01:15:55,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262616456] [2020-10-22 01:15:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:55,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:15:55,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:55,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:55,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:15:55,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2119707694] [2020-10-22 01:15:55,215 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:55,223 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:55,237 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 45 transitions. [2020-10-22 01:15:55,238 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:55,256 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1087583#(<= (+ ULTIMATE.start_main_~tid~0 16) ~SIGMA~0)] [2020-10-22 01:15:55,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:55,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:55,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:55,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:15:55,258 INFO L87 Difference]: Start difference. First operand 54751 states and 219565 transitions. Second operand 9 states. [2020-10-22 01:15:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:56,136 INFO L93 Difference]: Finished difference Result 54719 states and 219421 transitions. [2020-10-22 01:15:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 01:15:56,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-22 01:15:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:56,305 INFO L225 Difference]: With dead ends: 54719 [2020-10-22 01:15:56,305 INFO L226 Difference]: Without dead ends: 54719 [2020-10-22 01:15:56,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:15:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54719 states. [2020-10-22 01:15:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54719 to 54719. [2020-10-22 01:15:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54719 states. [2020-10-22 01:15:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54719 states to 54719 states and 219421 transitions. [2020-10-22 01:15:57,967 INFO L78 Accepts]: Start accepts. Automaton has 54719 states and 219421 transitions. Word has length 41 [2020-10-22 01:15:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:57,967 INFO L481 AbstractCegarLoop]: Abstraction has 54719 states and 219421 transitions. [2020-10-22 01:15:57,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 54719 states and 219421 transitions. [2020-10-22 01:15:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-22 01:15:57,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:57,974 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:58,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-22 01:15:58,188 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:58,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1588071424, now seen corresponding path program 1 times [2020-10-22 01:15:58,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:58,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833370747] [2020-10-22 01:15:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:58,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833370747] [2020-10-22 01:15:58,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245510107] [2020-10-22 01:15:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:58,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:58,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:15:58,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:58,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-22 01:15:58,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1401038116] [2020-10-22 01:15:58,477 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:58,484 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:58,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 51 transitions. [2020-10-22 01:15:58,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:58,891 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1251895#(<= (+ ULTIMATE.start_main_~tid~0 16) ~SIGMA~0)] [2020-10-22 01:15:58,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:15:58,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:58,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:15:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:15:58,893 INFO L87 Difference]: Start difference. First operand 54719 states and 219421 transitions. Second operand 10 states. [2020-10-22 01:15:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:59,265 INFO L93 Difference]: Finished difference Result 54655 states and 219101 transitions. [2020-10-22 01:15:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:15:59,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-22 01:15:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:59,410 INFO L225 Difference]: With dead ends: 54655 [2020-10-22 01:15:59,410 INFO L226 Difference]: Without dead ends: 54655 [2020-10-22 01:15:59,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:16:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54655 states. [2020-10-22 01:16:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54655 to 54655. [2020-10-22 01:16:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54655 states. [2020-10-22 01:16:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54655 states to 54655 states and 219101 transitions. [2020-10-22 01:16:01,920 INFO L78 Accepts]: Start accepts. Automaton has 54655 states and 219101 transitions. Word has length 47 [2020-10-22 01:16:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:01,920 INFO L481 AbstractCegarLoop]: Abstraction has 54655 states and 219101 transitions. [2020-10-22 01:16:01,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:16:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 54655 states and 219101 transitions. [2020-10-22 01:16:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-22 01:16:01,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:01,930 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:02,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-22 01:16:02,133 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2046327741, now seen corresponding path program 1 times [2020-10-22 01:16:02,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:02,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451821347] [2020-10-22 01:16:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:16:02,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451821347] [2020-10-22 01:16:02,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643304252] [2020-10-22 01:16:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:02,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:02,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:16:02,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:02,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-22 01:16:02,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270804227] [2020-10-22 01:16:02,520 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:02,539 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:02,578 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 57 transitions. [2020-10-22 01:16:02,578 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:02,594 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1416035#(<= (+ ULTIMATE.start_main_~tid~0 16) ~SIGMA~0)] [2020-10-22 01:16:02,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:16:02,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:02,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:16:02,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:16:02,596 INFO L87 Difference]: Start difference. First operand 54655 states and 219101 transitions. Second operand 11 states. [2020-10-22 01:16:03,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:03,008 INFO L93 Difference]: Finished difference Result 54527 states and 218397 transitions. [2020-10-22 01:16:03,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:16:03,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-22 01:16:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:03,157 INFO L225 Difference]: With dead ends: 54527 [2020-10-22 01:16:03,157 INFO L226 Difference]: Without dead ends: 54527 [2020-10-22 01:16:03,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:16:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54527 states. [2020-10-22 01:16:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54527 to 54527. [2020-10-22 01:16:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54527 states. [2020-10-22 01:16:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54527 states to 54527 states and 218397 transitions. [2020-10-22 01:16:05,462 INFO L78 Accepts]: Start accepts. Automaton has 54527 states and 218397 transitions. Word has length 53 [2020-10-22 01:16:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:05,462 INFO L481 AbstractCegarLoop]: Abstraction has 54527 states and 218397 transitions. [2020-10-22 01:16:05,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:16:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 54527 states and 218397 transitions. [2020-10-22 01:16:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-22 01:16:05,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:05,468 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:05,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:05,669 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1204976509, now seen corresponding path program 1 times [2020-10-22 01:16:05,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:05,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741883141] [2020-10-22 01:16:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:16:05,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:16:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 01:16:05,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 01:16:05,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 01:16:05,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 01:16:05,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-22 01:16:05,729 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 01:16:05,736 WARN L371 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 01:16:05,736 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2020-10-22 01:16:05,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,750 WARN L313 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,750 WARN L313 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,752 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,753 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,753 WARN L313 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,753 WARN L313 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,753 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,753 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,753 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,754 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,754 WARN L313 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,754 WARN L313 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,754 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,754 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,755 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,755 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,755 WARN L313 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,755 WARN L313 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,755 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,755 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,756 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,756 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,756 WARN L313 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,757 WARN L313 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,757 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,757 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,758 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,758 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,758 WARN L313 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,758 WARN L313 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,758 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,758 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,759 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,759 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,759 WARN L313 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,759 WARN L313 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,759 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,759 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,760 WARN L313 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,760 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,760 WARN L313 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,760 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,767 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,768 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,768 WARN L313 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,768 WARN L313 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,769 WARN L313 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,770 WARN L313 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,771 WARN L313 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,771 WARN L313 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,772 WARN L313 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,772 WARN L313 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,773 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,774 WARN L313 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,774 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,774 WARN L313 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,775 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,775 WARN L313 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,775 WARN L313 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,776 WARN L313 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,778 WARN L313 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,778 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,778 WARN L313 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,778 WARN L313 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,781 WARN L313 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,781 WARN L313 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,782 WARN L313 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,782 WARN L313 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:16:05,790 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-10-22 01:16:05,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 01:16:05,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:16:05,791 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:16:05,791 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:16:05,791 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:16:05,791 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:16:05,791 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:16:05,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:16:05,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:16:05,794 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:16:05,795 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 141 transitions, 426 flow [2020-10-22 01:16:05,795 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 141 transitions, 426 flow [2020-10-22 01:16:05,795 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 143 places, 141 transitions, 426 flow [2020-10-22 01:16:08,784 INFO L129 PetriNetUnfolder]: 4374/21970 cut-off events. [2020-10-22 01:16:08,785 INFO L130 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2020-10-22 01:16:08,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24347 conditions, 21970 events. 4374/21970 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 247372 event pairs, 1291 based on Foata normal form. 0/18364 useless extension candidates. Maximal degree in co-relation 12010. Up to 2304 conditions per place. [2020-10-22 01:16:09,185 INFO L116 LiptonReduction]: Number of co-enabled transitions 5832 [2020-10-22 01:16:11,539 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-22 01:16:11,823 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-22 01:16:12,325 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-22 01:16:12,496 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 01:16:12,513 INFO L131 LiptonReduction]: Checked pairs total: 13378 [2020-10-22 01:16:12,513 INFO L133 LiptonReduction]: Total number of compositions: 121 [2020-10-22 01:16:12,514 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 43 transitions, 230 flow [2020-10-22 01:16:55,306 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 163089 states. [2020-10-22 01:16:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 163089 states. [2020-10-22 01:16:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 01:16:55,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:55,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 01:16:55,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash 69598576, now seen corresponding path program 1 times [2020-10-22 01:16:55,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:55,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099260701] [2020-10-22 01:16:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:55,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099260701] [2020-10-22 01:16:55,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:16:55,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:16:55,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2123174875] [2020-10-22 01:16:55,326 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:55,326 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:55,326 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 01:16:55,327 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:55,327 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:55,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:16:55,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:55,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:16:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:16:55,328 INFO L87 Difference]: Start difference. First operand 163089 states. Second operand 3 states. [2020-10-22 01:16:57,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:57,124 INFO L93 Difference]: Finished difference Result 163089 states and 717318 transitions. [2020-10-22 01:16:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:16:57,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 01:16:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:57,659 INFO L225 Difference]: With dead ends: 163089 [2020-10-22 01:16:57,659 INFO L226 Difference]: Without dead ends: 143404 [2020-10-22 01:16:57,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:17:07,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143404 states. [2020-10-22 01:17:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143404 to 143404. [2020-10-22 01:17:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143404 states. [2020-10-22 01:17:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143404 states to 143404 states and 638584 transitions. [2020-10-22 01:17:10,967 INFO L78 Accepts]: Start accepts. Automaton has 143404 states and 638584 transitions. Word has length 4 [2020-10-22 01:17:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:10,968 INFO L481 AbstractCegarLoop]: Abstraction has 143404 states and 638584 transitions. [2020-10-22 01:17:10,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:17:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 143404 states and 638584 transitions. [2020-10-22 01:17:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:17:10,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:10,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:10,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-22 01:17:10,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:10,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1703718636, now seen corresponding path program 1 times [2020-10-22 01:17:10,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:10,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068160054] [2020-10-22 01:17:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:17:10,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068160054] [2020-10-22 01:17:10,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:17:10,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:17:10,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [751535980] [2020-10-22 01:17:10,994 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:10,995 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:10,996 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:17:10,996 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:10,996 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:10,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:17:10,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:10,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:17:10,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:17:10,997 INFO L87 Difference]: Start difference. First operand 143404 states and 638584 transitions. Second operand 4 states. [2020-10-22 01:17:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:13,327 INFO L93 Difference]: Finished difference Result 166667 states and 731394 transitions. [2020-10-22 01:17:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:17:13,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 01:17:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:13,962 INFO L225 Difference]: With dead ends: 166667 [2020-10-22 01:17:13,962 INFO L226 Difference]: Without dead ends: 166667 [2020-10-22 01:17:13,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:17:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166667 states. [2020-10-22 01:17:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166667 to 162061. [2020-10-22 01:17:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162061 states. [2020-10-22 01:17:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162061 states to 162061 states and 710659 transitions. [2020-10-22 01:17:38,070 INFO L78 Accepts]: Start accepts. Automaton has 162061 states and 710659 transitions. Word has length 10 [2020-10-22 01:17:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:38,070 INFO L481 AbstractCegarLoop]: Abstraction has 162061 states and 710659 transitions. [2020-10-22 01:17:38,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:17:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 162061 states and 710659 transitions. [2020-10-22 01:17:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:17:38,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:38,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:38,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-22 01:17:38,071 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1822863146, now seen corresponding path program 1 times [2020-10-22 01:17:38,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:38,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111781705] [2020-10-22 01:17:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:17:38,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111781705] [2020-10-22 01:17:38,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444932022] [2020-10-22 01:17:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:38,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:17:38,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 01:17:38,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:38,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-22 01:17:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [181257913] [2020-10-22 01:17:38,209 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:38,211 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:38,213 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-22 01:17:38,213 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:38,298 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:38,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:17:38,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:38,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:17:38,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:17:38,299 INFO L87 Difference]: Start difference. First operand 162061 states and 710659 transitions. Second operand 4 states. [2020-10-22 01:17:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:45,019 INFO L93 Difference]: Finished difference Result 162059 states and 710654 transitions. [2020-10-22 01:17:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:17:45,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 01:17:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:45,640 INFO L225 Difference]: With dead ends: 162059 [2020-10-22 01:17:45,640 INFO L226 Difference]: Without dead ends: 162059 [2020-10-22 01:17:45,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:17:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162059 states. [2020-10-22 01:17:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162059 to 162059. [2020-10-22 01:17:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162059 states. [2020-10-22 01:18:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162059 states to 162059 states and 710654 transitions. [2020-10-22 01:18:02,284 INFO L78 Accepts]: Start accepts. Automaton has 162059 states and 710654 transitions. Word has length 17 [2020-10-22 01:18:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:02,285 INFO L481 AbstractCegarLoop]: Abstraction has 162059 states and 710654 transitions. [2020-10-22 01:18:02,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 162059 states and 710654 transitions. [2020-10-22 01:18:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:18:02,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:02,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] Received shutdown request... [2020-10-22 01:18:02,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:02,486 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash 858039469, now seen corresponding path program 1 times [2020-10-22 01:18:02,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:02,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546342784] [2020-10-22 01:18:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2020-10-22 01:18:02,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536678544] [2020-10-22 01:18:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:02,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:18:02,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:02,590 WARN L210 SmtUtils]: Removed 1 from assertion stack [2020-10-22 01:18:02,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-22 01:18:02,791 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-22 01:18:02,797 WARN L235 ceAbstractionStarter]: Timeout [2020-10-22 01:18:02,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:18:02 BasicIcfg [2020-10-22 01:18:02,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:18:02,799 INFO L168 Benchmark]: Toolchain (without parser) took 217140.10 ms. Allocated memory was 147.3 MB in the beginning and 4.4 GB in the end (delta: 4.3 GB). Free memory was 101.0 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,799 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1079.92 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 120.7 MB in the end (delta: -20.5 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.00 ms. Allocated memory is still 205.0 MB. Free memory was 120.0 MB in the beginning and 117.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,800 INFO L168 Benchmark]: Boogie Preprocessor took 40.27 ms. Allocated memory is still 205.0 MB. Free memory was 117.9 MB in the beginning and 115.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,801 INFO L168 Benchmark]: RCFGBuilder took 561.78 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 115.9 MB in the beginning and 203.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,801 INFO L168 Benchmark]: TraceAbstraction took 215386.23 ms. Allocated memory was 237.0 MB in the beginning and 4.4 GB in the end (delta: 4.2 GB). Free memory was 202.0 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-10-22 01:18:02,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1079.92 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 120.7 MB in the end (delta: -20.5 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.00 ms. Allocated memory is still 205.0 MB. Free memory was 120.0 MB in the beginning and 117.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.27 ms. Allocated memory is still 205.0 MB. Free memory was 117.9 MB in the beginning and 115.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 561.78 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 115.9 MB in the beginning and 203.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215386.23 ms. Allocated memory was 237.0 MB in the beginning and 4.4 GB in the end (delta: 4.2 GB). Free memory was 202.0 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 189 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 6 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 87 PlacesBefore, 18 PlacesAfterwards, 93 TransitionsBefore, 17 TransitionsAfterwards, 384 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 104 TotalNumberOfCompositions, 507 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 461 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 18 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 94 PlacesBefore, 24 PlacesAfterwards, 99 TransitionsBefore, 22 TransitionsAfterwards, 904 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 13 ConcurrentYvCompositions, 7 ChoiceCompositions, 101 TotalNumberOfCompositions, 1309 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 757 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 24 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 101 PlacesBefore, 28 PlacesAfterwards, 105 TransitionsBefore, 25 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 13 ConcurrentYvCompositions, 7 ChoiceCompositions, 102 TotalNumberOfCompositions, 2428 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 999 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 108 PlacesBefore, 32 PlacesAfterwards, 111 TransitionsBefore, 28 TransitionsAfterwards, 2032 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 13 ConcurrentYvCompositions, 7 ChoiceCompositions, 103 TotalNumberOfCompositions, 3174 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1368 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 115 PlacesBefore, 36 PlacesAfterwards, 117 TransitionsBefore, 31 TransitionsAfterwards, 2680 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 109 TotalNumberOfCompositions, 4720 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1706 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 122 PlacesBefore, 40 PlacesAfterwards, 123 TransitionsBefore, 34 TransitionsAfterwards, 3384 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 6468 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2230 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 129 PlacesBefore, 44 PlacesAfterwards, 129 TransitionsBefore, 37 TransitionsAfterwards, 4144 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 13 ConcurrentYvCompositions, 7 ChoiceCompositions, 119 TotalNumberOfCompositions, 9247 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2568 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 120 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.8s, 136 PlacesBefore, 48 PlacesAfterwards, 135 TransitionsBefore, 40 TransitionsAfterwards, 4960 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 13 ConcurrentYvCompositions, 7 ChoiceCompositions, 118 TotalNumberOfCompositions, 11001 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2998 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 130 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.7s, 143 PlacesBefore, 52 PlacesAfterwards, 141 TransitionsBefore, 43 TransitionsAfterwards, 5832 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 121 TotalNumberOfCompositions, 13378 MoverChecksTotal - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 16). Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 84 locations, 1 error locations. Started 9 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 214.9s, OverallIterations: 56, TraceHistogramMax: 9, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 86.8s, HoareTripleCheckerStatistics: 1335 SDtfs, 1578 SDslu, 1936 SDs, 0 SdLazy, 1162 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1053 GetRequests, 774 SyntacticMatches, 10 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163089occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 87.8s AutomataMinimizationTime, 47 MinimizatonAttempts, 8114 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 2042 NumberOfCodeBlocks, 2042 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 1710 ConstructedInterpolants, 0 QuantifiedInterpolants, 252554 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4683 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 77 InterpolantComputations, 17 PerfectInterpolantSequences, 112/1874 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