/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/sigma.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 07:43:42,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 07:43:42,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 07:43:42,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 07:43:42,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 07:43:42,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 07:43:42,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 07:43:42,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 07:43:42,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 07:43:42,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 07:43:42,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 07:43:42,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 07:43:42,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 07:43:42,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 07:43:42,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 07:43:42,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 07:43:42,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 07:43:42,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 07:43:42,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 07:43:42,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 07:43:42,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 07:43:42,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 07:43:42,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 07:43:42,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 07:43:42,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 07:43:42,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 07:43:42,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 07:43:42,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 07:43:42,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 07:43:42,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 07:43:42,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 07:43:42,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 07:43:42,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 07:43:42,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 07:43:42,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 07:43:42,510 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 07:43:42,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 07:43:42,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 07:43:42,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:43:42,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 07:43:42,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 07:43:42,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 07:43:42,513 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 07:43:42,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 07:43:42,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 07:43:42,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 07:43:42,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 07:43:42,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 07:43:42,761 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 07:43:42,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sigma.i [2021-06-05 07:43:42,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3f19b7b/fb79c7db3b2c4ab19a2758fef704d909/FLAG6b85e7c93 [2021-06-05 07:43:43,312 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 07:43:43,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i [2021-06-05 07:43:43,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3f19b7b/fb79c7db3b2c4ab19a2758fef704d909/FLAG6b85e7c93 [2021-06-05 07:43:43,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3f19b7b/fb79c7db3b2c4ab19a2758fef704d909 [2021-06-05 07:43:43,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 07:43:43,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 07:43:43,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 07:43:43,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 07:43:43,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 07:43:43,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:43:43" (1/1) ... [2021-06-05 07:43:43,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66686aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:43, skipping insertion in model container [2021-06-05 07:43:43,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:43:43" (1/1) ... [2021-06-05 07:43:43,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 07:43:43,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 07:43:44,177 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i[55285,55298] [2021-06-05 07:43:44,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:43:44,195 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 07:43:44,229 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i[55285,55298] [2021-06-05 07:43:44,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:43:44,332 INFO L208 MainTranslator]: Completed translation [2021-06-05 07:43:44,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44 WrapperNode [2021-06-05 07:43:44,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 07:43:44,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 07:43:44,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 07:43:44,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 07:43:44,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 07:43:44,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 07:43:44,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 07:43:44,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 07:43:44,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (1/1) ... [2021-06-05 07:43:44,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 07:43:44,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 07:43:44,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 07:43:44,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 07:43:44,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (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 [2021-06-05 07:43:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 07:43:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-05 07:43:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 07:43:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 07:43:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 07:43:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-06-05 07:43:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-05 07:43:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 07:43:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-05 07:43:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-05 07:43:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 07:43:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 07:43:44,465 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 07:43:44,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 07:43:44,745 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-06-05 07:43:44,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:43:44 BoogieIcfgContainer [2021-06-05 07:43:44,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 07:43:44,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 07:43:44,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 07:43:44,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 07:43:44,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:43:43" (1/3) ... [2021-06-05 07:43:44,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5597c574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:43:44, skipping insertion in model container [2021-06-05 07:43:44,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:43:44" (2/3) ... [2021-06-05 07:43:44,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5597c574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:43:44, skipping insertion in model container [2021-06-05 07:43:44,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:43:44" (3/3) ... [2021-06-05 07:43:44,751 INFO L111 eAbstractionObserver]: Analyzing ICFG sigma.i [2021-06-05 07:43:44,754 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 07:43:44,754 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 07:43:44,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 07:43:44,755 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,769 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,771 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,771 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:44,775 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 07:43:44,789 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:44,800 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:44,800 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:44,801 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:44,801 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:44,801 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:44,801 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:44,801 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:44,801 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:43:44,807 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 92 transitions, 192 flow [2021-06-05 07:43:44,820 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:44,826 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:44,826 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:44,826 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:44,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1750532089, now seen corresponding path program 1 times [2021-06-05 07:43:44,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:44,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035824124] [2021-06-05 07:43:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:44,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:44,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035824124] [2021-06-05 07:43:44,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035824124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:44,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:44,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:43:44,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828445848] [2021-06-05 07:43:44,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 07:43:44,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:44,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 07:43:44,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:44,969 INFO L87 Difference]: Start difference. First operand has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:44,985 INFO L93 Difference]: Finished difference Result 282 states and 452 transitions. [2021-06-05 07:43:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 07:43:44,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:44,992 INFO L225 Difference]: With dead ends: 282 [2021-06-05 07:43:44,992 INFO L226 Difference]: Without dead ends: 196 [2021-06-05 07:43:44,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-06-05 07:43:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-06-05 07:43:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 1.577319587628866) internal successors, (306), 195 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 306 transitions. [2021-06-05 07:43:45,023 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 306 transitions. Word has length 41 [2021-06-05 07:43:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:45,023 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 306 transitions. [2021-06-05 07:43:45,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 306 transitions. [2021-06-05 07:43:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:45,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:45,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:45,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 07:43:45,024 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:45,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1031341464, now seen corresponding path program 1 times [2021-06-05 07:43:45,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:45,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026437263] [2021-06-05 07:43:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:45,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:45,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026437263] [2021-06-05 07:43:45,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026437263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:45,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:45,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 07:43:45,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135520874] [2021-06-05 07:43:45,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 07:43:45,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 07:43:45,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:45,094 INFO L87 Difference]: Start difference. First operand 196 states and 306 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:45,130 INFO L93 Difference]: Finished difference Result 120 states and 164 transitions. [2021-06-05 07:43:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 07:43:45,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:45,132 INFO L225 Difference]: With dead ends: 120 [2021-06-05 07:43:45,132 INFO L226 Difference]: Without dead ends: 120 [2021-06-05 07:43:45,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-06-05 07:43:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-06-05 07:43:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 164 transitions. [2021-06-05 07:43:45,138 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 164 transitions. Word has length 41 [2021-06-05 07:43:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:45,138 INFO L482 AbstractCegarLoop]: Abstraction has 120 states and 164 transitions. [2021-06-05 07:43:45,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 164 transitions. [2021-06-05 07:43:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 07:43:45,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:45,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:45,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 07:43:45,140 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:45,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1382251331, now seen corresponding path program 1 times [2021-06-05 07:43:45,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:45,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111520797] [2021-06-05 07:43:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:45,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:45,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111520797] [2021-06-05 07:43:45,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111520797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:45,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:45,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 07:43:45,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455977370] [2021-06-05 07:43:45,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 07:43:45,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 07:43:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 07:43:45,228 INFO L87 Difference]: Start difference. First operand 120 states and 164 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:45,275 INFO L93 Difference]: Finished difference Result 126 states and 170 transitions. [2021-06-05 07:43:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 07:43:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 07:43:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:45,276 INFO L225 Difference]: With dead ends: 126 [2021-06-05 07:43:45,276 INFO L226 Difference]: Without dead ends: 126 [2021-06-05 07:43:45,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:43:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-06-05 07:43:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2021-06-05 07:43:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2021-06-05 07:43:45,282 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 165 transitions. Word has length 69 [2021-06-05 07:43:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:45,282 INFO L482 AbstractCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-06-05 07:43:45,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 165 transitions. [2021-06-05 07:43:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-06-05 07:43:45,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:45,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:45,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 07:43:45,284 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2043101509, now seen corresponding path program 1 times [2021-06-05 07:43:45,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:45,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394973107] [2021-06-05 07:43:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:45,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:45,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394973107] [2021-06-05 07:43:45,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394973107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:45,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385170735] [2021-06-05 07:43:45,349 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 [2021-06-05 07:43:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:45,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 07:43:45,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:45,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385170735] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:45,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:45,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-06-05 07:43:45,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615160093] [2021-06-05 07:43:45,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:43:45,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:45,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:43:45,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:43:45,600 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:45,632 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2021-06-05 07:43:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 07:43:45,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-06-05 07:43:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:45,633 INFO L225 Difference]: With dead ends: 74 [2021-06-05 07:43:45,633 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 07:43:45,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 07:43:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 07:43:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 07:43:45,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2021-06-05 07:43:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:45,633 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 07:43:45,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 07:43:45,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 07:43:45,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:43:45,850 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 07:43:45,851 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:45,852 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:45,852 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:45,852 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:45,852 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:45,852 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:45,852 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:45,852 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:45,852 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 07:43:45,853 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 92 transitions, 192 flow [2021-06-05 07:43:45,857 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 07:43:45,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:45,859 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:45,859 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 07:43:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2107954742, now seen corresponding path program 1 times [2021-06-05 07:43:45,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:45,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745942772] [2021-06-05 07:43:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:43:45,879 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:43:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:43:45,907 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:43:45,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 07:43:45,937 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 07:43:45,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 07:43:45,937 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 07:43:45,937 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 07:43:45,937 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,944 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,946 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,946 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,947 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,947 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:45,950 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 07:43:45,950 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:45,950 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:45,951 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:45,951 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:45,951 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:45,951 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:45,951 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:45,951 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:45,951 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:43:45,952 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 98 transitions, 214 flow [2021-06-05 07:43:45,974 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:45,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:45,977 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:45,977 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1058894999, now seen corresponding path program 1 times [2021-06-05 07:43:45,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:45,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021143027] [2021-06-05 07:43:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:46,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:46,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021143027] [2021-06-05 07:43:46,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021143027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:46,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:46,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:43:46,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779539911] [2021-06-05 07:43:46,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 07:43:46,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:46,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 07:43:46,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:46,014 INFO L87 Difference]: Start difference. First operand has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:46,022 INFO L93 Difference]: Finished difference Result 1502 states and 3504 transitions. [2021-06-05 07:43:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 07:43:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:46,031 INFO L225 Difference]: With dead ends: 1502 [2021-06-05 07:43:46,031 INFO L226 Difference]: Without dead ends: 1056 [2021-06-05 07:43:46,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-06-05 07:43:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2021-06-05 07:43:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1052 states have (on average 2.290874524714829) internal successors, (2410), 1055 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 2410 transitions. [2021-06-05 07:43:46,074 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 2410 transitions. Word has length 41 [2021-06-05 07:43:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:46,074 INFO L482 AbstractCegarLoop]: Abstraction has 1056 states and 2410 transitions. [2021-06-05 07:43:46,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 2410 transitions. [2021-06-05 07:43:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:46,077 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:46,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:46,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 07:43:46,079 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash -339704374, now seen corresponding path program 1 times [2021-06-05 07:43:46,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:46,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343478038] [2021-06-05 07:43:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:46,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:46,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343478038] [2021-06-05 07:43:46,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343478038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:46,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:46,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 07:43:46,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343547352] [2021-06-05 07:43:46,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 07:43:46,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:46,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 07:43:46,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:46,121 INFO L87 Difference]: Start difference. First operand 1056 states and 2410 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:46,156 INFO L93 Difference]: Finished difference Result 704 states and 1444 transitions. [2021-06-05 07:43:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 07:43:46,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:46,158 INFO L225 Difference]: With dead ends: 704 [2021-06-05 07:43:46,158 INFO L226 Difference]: Without dead ends: 704 [2021-06-05 07:43:46,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-05 07:43:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 685. [2021-06-05 07:43:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 682 states have (on average 2.0777126099706744) internal successors, (1417), 684 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1417 transitions. [2021-06-05 07:43:46,196 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1417 transitions. Word has length 41 [2021-06-05 07:43:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:46,196 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 1417 transitions. [2021-06-05 07:43:46,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1417 transitions. [2021-06-05 07:43:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 07:43:46,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:46,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:46,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 07:43:46,199 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:46,202 INFO L82 PathProgramCache]: Analyzing trace with hash 367933672, now seen corresponding path program 1 times [2021-06-05 07:43:46,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:46,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486339818] [2021-06-05 07:43:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:46,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:46,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486339818] [2021-06-05 07:43:46,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486339818] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:46,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:46,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 07:43:46,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874174452] [2021-06-05 07:43:46,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 07:43:46,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:46,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 07:43:46,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 07:43:46,279 INFO L87 Difference]: Start difference. First operand 685 states and 1417 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:46,329 INFO L93 Difference]: Finished difference Result 770 states and 1558 transitions. [2021-06-05 07:43:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 07:43:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 07:43:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:46,333 INFO L225 Difference]: With dead ends: 770 [2021-06-05 07:43:46,333 INFO L226 Difference]: Without dead ends: 770 [2021-06-05 07:43:46,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:43:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-06-05 07:43:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 696. [2021-06-05 07:43:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 693 states have (on average 2.0721500721500723) internal successors, (1436), 695 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1436 transitions. [2021-06-05 07:43:46,345 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1436 transitions. Word has length 69 [2021-06-05 07:43:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:46,346 INFO L482 AbstractCegarLoop]: Abstraction has 696 states and 1436 transitions. [2021-06-05 07:43:46,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1436 transitions. [2021-06-05 07:43:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-06-05 07:43:46,348 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:46,348 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:46,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 07:43:46,348 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:46,348 INFO L82 PathProgramCache]: Analyzing trace with hash -140101028, now seen corresponding path program 1 times [2021-06-05 07:43:46,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:46,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325444491] [2021-06-05 07:43:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:46,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:46,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325444491] [2021-06-05 07:43:46,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325444491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:46,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999841710] [2021-06-05 07:43:46,400 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 [2021-06-05 07:43:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:46,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 07:43:46,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:46,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999841710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:46,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:46,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-06-05 07:43:46,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635427462] [2021-06-05 07:43:46,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:43:46,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:46,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:43:46,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:43:46,612 INFO L87 Difference]: Start difference. First operand 696 states and 1436 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:46,675 INFO L93 Difference]: Finished difference Result 686 states and 1413 transitions. [2021-06-05 07:43:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 07:43:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-06-05 07:43:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:46,678 INFO L225 Difference]: With dead ends: 686 [2021-06-05 07:43:46,678 INFO L226 Difference]: Without dead ends: 686 [2021-06-05 07:43:46,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-06-05 07:43:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2021-06-05 07:43:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 683 states have (on average 2.068814055636896) internal successors, (1413), 685 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1413 transitions. [2021-06-05 07:43:46,688 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1413 transitions. Word has length 76 [2021-06-05 07:43:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:46,689 INFO L482 AbstractCegarLoop]: Abstraction has 686 states and 1413 transitions. [2021-06-05 07:43:46,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1413 transitions. [2021-06-05 07:43:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-06-05 07:43:46,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:46,693 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:46,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:43:46,911 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:46,911 INFO L82 PathProgramCache]: Analyzing trace with hash -677091859, now seen corresponding path program 1 times [2021-06-05 07:43:46,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:46,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769762427] [2021-06-05 07:43:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 07:43:46,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:46,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769762427] [2021-06-05 07:43:46,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769762427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:46,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507125938] [2021-06-05 07:43:46,991 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 [2021-06-05 07:43:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:47,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 07:43:47,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:47,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507125938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:47,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:47,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-06-05 07:43:47,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788964689] [2021-06-05 07:43:47,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:43:47,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:47,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:43:47,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:47,259 INFO L87 Difference]: Start difference. First operand 686 states and 1413 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:47,316 INFO L93 Difference]: Finished difference Result 289 states and 604 transitions. [2021-06-05 07:43:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 07:43:47,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-06-05 07:43:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:47,318 INFO L225 Difference]: With dead ends: 289 [2021-06-05 07:43:47,318 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 07:43:47,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:43:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 07:43:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 07:43:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 07:43:47,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-06-05 07:43:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:47,319 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 07:43:47,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 07:43:47,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 07:43:47,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 07:43:47,529 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 07:43:47,529 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:47,530 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:47,530 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:47,530 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:47,530 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:47,530 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:47,530 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:47,530 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:47,530 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 07:43:47,531 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 98 transitions, 214 flow [2021-06-05 07:43:47,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 07:43:47,554 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:47,555 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:47,555 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 07:43:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1437284449, now seen corresponding path program 1 times [2021-06-05 07:43:47,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:47,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842800907] [2021-06-05 07:43:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:43:47,567 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:43:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:43:47,577 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:43:47,591 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 07:43:47,591 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 07:43:47,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 07:43:47,591 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 07:43:47,591 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 07:43:47,591 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-05 07:43:47,602 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,602 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,602 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,602 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,603 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,604 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,605 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,605 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,605 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,605 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,605 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,606 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,606 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,606 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,606 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,607 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,607 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,607 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,615 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:47,618 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 07:43:47,618 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:47,619 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:47,619 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:47,619 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:47,619 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:47,619 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:47,620 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:47,620 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:47,620 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:43:47,623 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 104 transitions, 238 flow [2021-06-05 07:43:47,906 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:47,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:47,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:47,926 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:47,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1201436719, now seen corresponding path program 1 times [2021-06-05 07:43:47,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:47,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756715492] [2021-06-05 07:43:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:47,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:47,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756715492] [2021-06-05 07:43:47,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756715492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:47,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:47,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:43:47,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193736663] [2021-06-05 07:43:47,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 07:43:47,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:47,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 07:43:47,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:47,958 INFO L87 Difference]: Start difference. First operand has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:48,010 INFO L93 Difference]: Finished difference Result 8502 states and 25905 transitions. [2021-06-05 07:43:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 07:43:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:48,037 INFO L225 Difference]: With dead ends: 8502 [2021-06-05 07:43:48,037 INFO L226 Difference]: Without dead ends: 6076 [2021-06-05 07:43:48,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2021-06-05 07:43:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 6076. [2021-06-05 07:43:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 6068 states have (on average 2.997198417930125) internal successors, (18187), 6075 states have internal predecessors, (18187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 18187 transitions. [2021-06-05 07:43:48,232 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 18187 transitions. Word has length 41 [2021-06-05 07:43:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:48,232 INFO L482 AbstractCegarLoop]: Abstraction has 6076 states and 18187 transitions. [2021-06-05 07:43:48,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 18187 transitions. [2021-06-05 07:43:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:48,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:48,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:48,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 07:43:48,233 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:48,233 INFO L82 PathProgramCache]: Analyzing trace with hash -482246094, now seen corresponding path program 1 times [2021-06-05 07:43:48,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:48,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832931603] [2021-06-05 07:43:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:48,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:48,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832931603] [2021-06-05 07:43:48,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832931603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:48,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:48,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 07:43:48,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033789544] [2021-06-05 07:43:48,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 07:43:48,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:48,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 07:43:48,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:48,261 INFO L87 Difference]: Start difference. First operand 6076 states and 18187 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:48,319 INFO L93 Difference]: Finished difference Result 4364 states and 12038 transitions. [2021-06-05 07:43:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 07:43:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:48,337 INFO L225 Difference]: With dead ends: 4364 [2021-06-05 07:43:48,337 INFO L226 Difference]: Without dead ends: 4364 [2021-06-05 07:43:48,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2021-06-05 07:43:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4230. [2021-06-05 07:43:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4223 states have (on average 2.7845133791143737) internal successors, (11759), 4229 states have internal predecessors, (11759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 11759 transitions. [2021-06-05 07:43:48,503 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 11759 transitions. Word has length 41 [2021-06-05 07:43:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:48,503 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 11759 transitions. [2021-06-05 07:43:48,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 11759 transitions. [2021-06-05 07:43:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 07:43:48,504 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:48,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:48,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 07:43:48,504 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:48,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1599598941, now seen corresponding path program 1 times [2021-06-05 07:43:48,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:48,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447634647] [2021-06-05 07:43:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:48,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:48,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447634647] [2021-06-05 07:43:48,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447634647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:48,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:48,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 07:43:48,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878809033] [2021-06-05 07:43:48,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 07:43:48,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:48,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 07:43:48,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 07:43:48,537 INFO L87 Difference]: Start difference. First operand 4230 states and 11759 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:48,596 INFO L93 Difference]: Finished difference Result 4910 states and 13376 transitions. [2021-06-05 07:43:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 07:43:48,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 07:43:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:48,612 INFO L225 Difference]: With dead ends: 4910 [2021-06-05 07:43:48,612 INFO L226 Difference]: Without dead ends: 4910 [2021-06-05 07:43:48,612 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:43:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2021-06-05 07:43:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 4321. [2021-06-05 07:43:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4314 states have (on average 2.777468706536857) internal successors, (11982), 4320 states have internal predecessors, (11982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 11982 transitions. [2021-06-05 07:43:48,689 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 11982 transitions. Word has length 69 [2021-06-05 07:43:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:48,689 INFO L482 AbstractCegarLoop]: Abstraction has 4321 states and 11982 transitions. [2021-06-05 07:43:48,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 11982 transitions. [2021-06-05 07:43:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-06-05 07:43:48,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:48,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:48,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 07:43:48,691 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2100395439, now seen corresponding path program 1 times [2021-06-05 07:43:48,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:48,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055995491] [2021-06-05 07:43:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:48,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:48,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055995491] [2021-06-05 07:43:48,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055995491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:48,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419785045] [2021-06-05 07:43:48,727 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 [2021-06-05 07:43:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:48,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 07:43:48,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:48,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419785045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:48,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:48,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-06-05 07:43:48,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819453655] [2021-06-05 07:43:48,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:43:48,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:48,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:43:48,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:43:48,963 INFO L87 Difference]: Start difference. First operand 4321 states and 11982 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:49,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:49,050 INFO L93 Difference]: Finished difference Result 4426 states and 12211 transitions. [2021-06-05 07:43:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 07:43:49,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-06-05 07:43:49,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:49,058 INFO L225 Difference]: With dead ends: 4426 [2021-06-05 07:43:49,058 INFO L226 Difference]: Without dead ends: 4426 [2021-06-05 07:43:49,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-06-05 07:43:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4311. [2021-06-05 07:43:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4304 states have (on average 2.778578066914498) internal successors, (11959), 4310 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 11959 transitions. [2021-06-05 07:43:49,131 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 11959 transitions. Word has length 76 [2021-06-05 07:43:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:49,131 INFO L482 AbstractCegarLoop]: Abstraction has 4311 states and 11959 transitions. [2021-06-05 07:43:49,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 11959 transitions. [2021-06-05 07:43:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-06-05 07:43:49,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:49,136 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:49,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:43:49,352 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1417513908, now seen corresponding path program 1 times [2021-06-05 07:43:49,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:49,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18715200] [2021-06-05 07:43:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 07:43:49,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:49,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18715200] [2021-06-05 07:43:49,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18715200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:49,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416878493] [2021-06-05 07:43:49,398 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 [2021-06-05 07:43:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:49,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 07:43:49,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:49,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416878493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:49,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:49,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-06-05 07:43:49,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150760668] [2021-06-05 07:43:49,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:43:49,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:43:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:49,651 INFO L87 Difference]: Start difference. First operand 4311 states and 11959 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:49,778 INFO L93 Difference]: Finished difference Result 3061 states and 8609 transitions. [2021-06-05 07:43:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:43:49,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-06-05 07:43:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:49,784 INFO L225 Difference]: With dead ends: 3061 [2021-06-05 07:43:49,784 INFO L226 Difference]: Without dead ends: 3061 [2021-06-05 07:43:49,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:43:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2021-06-05 07:43:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 3061. [2021-06-05 07:43:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3057 states have (on average 2.8161596336277395) internal successors, (8609), 3060 states have internal predecessors, (8609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8609 transitions. [2021-06-05 07:43:49,838 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8609 transitions. Word has length 91 [2021-06-05 07:43:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:49,838 INFO L482 AbstractCegarLoop]: Abstraction has 3061 states and 8609 transitions. [2021-06-05 07:43:49,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8609 transitions. [2021-06-05 07:43:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-06-05 07:43:49,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:49,844 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:50,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-05 07:43:50,057 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:50,057 INFO L82 PathProgramCache]: Analyzing trace with hash 109815131, now seen corresponding path program 1 times [2021-06-05 07:43:50,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:50,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537536240] [2021-06-05 07:43:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-06-05 07:43:50,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:50,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537536240] [2021-06-05 07:43:50,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537536240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:50,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544411354] [2021-06-05 07:43:50,114 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 [2021-06-05 07:43:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:50,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:43:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 07:43:50,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544411354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:50,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:50,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-06-05 07:43:50,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125005156] [2021-06-05 07:43:50,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:43:50,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:43:50,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:43:50,449 INFO L87 Difference]: Start difference. First operand 3061 states and 8609 transitions. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:50,534 INFO L93 Difference]: Finished difference Result 1364 states and 3999 transitions. [2021-06-05 07:43:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 07:43:50,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-06-05 07:43:50,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:50,534 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 07:43:50,534 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 07:43:50,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:43:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 07:43:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 07:43:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 07:43:50,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 119 [2021-06-05 07:43:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:50,535 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 07:43:50,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 07:43:50,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 07:43:50,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 07:43:50,753 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 07:43:50,753 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:50,754 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:50,754 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:50,754 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:50,754 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:50,754 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:50,754 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:50,754 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:50,754 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 07:43:50,755 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 104 transitions, 238 flow [2021-06-05 07:43:50,931 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-06-05 07:43:50,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:50,954 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:50,954 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 07:43:50,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:50,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2017283657, now seen corresponding path program 1 times [2021-06-05 07:43:50,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:50,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965589534] [2021-06-05 07:43:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:43:50,964 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:43:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:43:50,975 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:43:50,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 07:43:50,987 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 07:43:50,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 07:43:50,988 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 07:43:50,988 WARN L242 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 07:43:50,988 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,994 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,995 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,996 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,997 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,997 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,997 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,997 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,997 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,997 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,998 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,998 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,998 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,998 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:50,999 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:43:51,003 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 07:43:51,003 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:43:51,003 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:43:51,003 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:43:51,003 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:43:51,003 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:43:51,003 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:43:51,003 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:43:51,003 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:43:51,004 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:43:51,004 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 110 transitions, 264 flow [2021-06-05 07:43:53,942 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:53,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:53,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:53,999 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:54,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:54,000 INFO L82 PathProgramCache]: Analyzing trace with hash 319858688, now seen corresponding path program 1 times [2021-06-05 07:43:54,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:54,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095552985] [2021-06-05 07:43:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:54,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:54,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095552985] [2021-06-05 07:43:54,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095552985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:54,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:54,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:43:54,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851522046] [2021-06-05 07:43:54,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 07:43:54,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 07:43:54,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:54,061 INFO L87 Difference]: Start difference. First operand has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:54,437 INFO L93 Difference]: Finished difference Result 48902 states and 183106 transitions. [2021-06-05 07:43:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 07:43:54,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:54,777 INFO L225 Difference]: With dead ends: 48902 [2021-06-05 07:43:54,777 INFO L226 Difference]: Without dead ends: 35496 [2021-06-05 07:43:54,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:43:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35496 states. [2021-06-05 07:43:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35496 to 35496. [2021-06-05 07:43:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35496 states, 35480 states have (on average 3.691206313416009) internal successors, (130964), 35495 states have internal predecessors, (130964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35496 states to 35496 states and 130964 transitions. [2021-06-05 07:43:55,872 INFO L78 Accepts]: Start accepts. Automaton has 35496 states and 130964 transitions. Word has length 41 [2021-06-05 07:43:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:55,872 INFO L482 AbstractCegarLoop]: Abstraction has 35496 states and 130964 transitions. [2021-06-05 07:43:55,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 35496 states and 130964 transitions. [2021-06-05 07:43:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:43:55,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:55,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:55,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 07:43:55,873 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:55,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1458966624, now seen corresponding path program 1 times [2021-06-05 07:43:55,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:55,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97642943] [2021-06-05 07:43:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:43:55,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:55,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97642943] [2021-06-05 07:43:55,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97642943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:55,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:55,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 07:43:55,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776651144] [2021-06-05 07:43:55,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 07:43:55,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:55,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 07:43:55,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:55,949 INFO L87 Difference]: Start difference. First operand 35496 states and 130964 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:56,076 INFO L93 Difference]: Finished difference Result 27084 states and 93745 transitions. [2021-06-05 07:43:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 07:43:56,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:43:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:56,146 INFO L225 Difference]: With dead ends: 27084 [2021-06-05 07:43:56,146 INFO L226 Difference]: Without dead ends: 27084 [2021-06-05 07:43:56,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:43:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27084 states. [2021-06-05 07:43:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27084 to 26275. [2021-06-05 07:43:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26275 states, 26260 states have (on average 3.4829017517136327) internal successors, (91461), 26274 states have internal predecessors, (91461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26275 states to 26275 states and 91461 transitions. [2021-06-05 07:43:56,876 INFO L78 Accepts]: Start accepts. Automaton has 26275 states and 91461 transitions. Word has length 41 [2021-06-05 07:43:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:56,876 INFO L482 AbstractCegarLoop]: Abstraction has 26275 states and 91461 transitions. [2021-06-05 07:43:56,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 26275 states and 91461 transitions. [2021-06-05 07:43:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 07:43:56,878 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:56,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:56,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 07:43:56,878 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:56,878 INFO L82 PathProgramCache]: Analyzing trace with hash -632966192, now seen corresponding path program 1 times [2021-06-05 07:43:56,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:56,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523132298] [2021-06-05 07:43:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:56,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:56,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523132298] [2021-06-05 07:43:56,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523132298] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:43:56,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:43:56,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 07:43:56,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021168797] [2021-06-05 07:43:56,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 07:43:56,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 07:43:56,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 07:43:56,907 INFO L87 Difference]: Start difference. First operand 26275 states and 91461 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:57,199 INFO L93 Difference]: Finished difference Result 31110 states and 106507 transitions. [2021-06-05 07:43:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 07:43:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 07:43:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:57,280 INFO L225 Difference]: With dead ends: 31110 [2021-06-05 07:43:57,280 INFO L226 Difference]: Without dead ends: 31110 [2021-06-05 07:43:57,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:43:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states. [2021-06-05 07:43:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31110 to 26946. [2021-06-05 07:43:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26946 states, 26931 states have (on average 3.4751030411050463) internal successors, (93588), 26945 states have internal predecessors, (93588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26946 states to 26946 states and 93588 transitions. [2021-06-05 07:43:58,064 INFO L78 Accepts]: Start accepts. Automaton has 26946 states and 93588 transitions. Word has length 69 [2021-06-05 07:43:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:58,064 INFO L482 AbstractCegarLoop]: Abstraction has 26946 states and 93588 transitions. [2021-06-05 07:43:58,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 26946 states and 93588 transitions. [2021-06-05 07:43:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-06-05 07:43:58,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:58,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:58,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 07:43:58,066 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:58,067 INFO L82 PathProgramCache]: Analyzing trace with hash 414249738, now seen corresponding path program 1 times [2021-06-05 07:43:58,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:58,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790283345] [2021-06-05 07:43:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:58,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:58,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790283345] [2021-06-05 07:43:58,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790283345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:58,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090897147] [2021-06-05 07:43:58,100 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 [2021-06-05 07:43:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:58,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 07:43:58,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:58,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090897147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:58,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:58,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-06-05 07:43:58,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932991853] [2021-06-05 07:43:58,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:43:58,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:58,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:43:58,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:43:58,286 INFO L87 Difference]: Start difference. First operand 26946 states and 93588 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:43:58,455 INFO L93 Difference]: Finished difference Result 27726 states and 95822 transitions. [2021-06-05 07:43:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 07:43:58,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-06-05 07:43:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:43:58,518 INFO L225 Difference]: With dead ends: 27726 [2021-06-05 07:43:58,518 INFO L226 Difference]: Without dead ends: 27726 [2021-06-05 07:43:58,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27726 states. [2021-06-05 07:43:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27726 to 26936. [2021-06-05 07:43:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26936 states, 26921 states have (on average 3.4755395416217825) internal successors, (93565), 26935 states have internal predecessors, (93565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26936 states to 26936 states and 93565 transitions. [2021-06-05 07:43:59,170 INFO L78 Accepts]: Start accepts. Automaton has 26936 states and 93565 transitions. Word has length 76 [2021-06-05 07:43:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:43:59,170 INFO L482 AbstractCegarLoop]: Abstraction has 26936 states and 93565 transitions. [2021-06-05 07:43:59,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:43:59,170 INFO L276 IsEmpty]: Start isEmpty. Operand 26936 states and 93565 transitions. [2021-06-05 07:43:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-06-05 07:43:59,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:43:59,177 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:43:59,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:43:59,395 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:43:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:43:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1303723719, now seen corresponding path program 1 times [2021-06-05 07:43:59,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:43:59,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572674353] [2021-06-05 07:43:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:43:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 07:43:59,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:43:59,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572674353] [2021-06-05 07:43:59,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572674353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:59,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765715572] [2021-06-05 07:43:59,619 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 [2021-06-05 07:43:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:43:59,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 07:43:59,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:43:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:43:59,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765715572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:43:59,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:43:59,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-06-05 07:43:59,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042424159] [2021-06-05 07:43:59,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:43:59,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:43:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:43:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:43:59,857 INFO L87 Difference]: Start difference. First operand 26936 states and 93565 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:44:00,050 INFO L93 Difference]: Finished difference Result 19996 states and 68753 transitions. [2021-06-05 07:44:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:44:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-06-05 07:44:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:44:00,087 INFO L225 Difference]: With dead ends: 19996 [2021-06-05 07:44:00,087 INFO L226 Difference]: Without dead ends: 19996 [2021-06-05 07:44:00,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:44:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19996 states. [2021-06-05 07:44:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19996 to 19711. [2021-06-05 07:44:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19711 states, 19700 states have (on average 3.4571065989847716) internal successors, (68105), 19710 states have internal predecessors, (68105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19711 states to 19711 states and 68105 transitions. [2021-06-05 07:44:00,529 INFO L78 Accepts]: Start accepts. Automaton has 19711 states and 68105 transitions. Word has length 91 [2021-06-05 07:44:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:44:00,529 INFO L482 AbstractCegarLoop]: Abstraction has 19711 states and 68105 transitions. [2021-06-05 07:44:00,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19711 states and 68105 transitions. [2021-06-05 07:44:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-06-05 07:44:00,558 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:44:00,558 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:44:00,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 07:44:00,759 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:44:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:44:00,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1017058294, now seen corresponding path program 1 times [2021-06-05 07:44:00,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:44:00,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285564417] [2021-06-05 07:44:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:44:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:44:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-06-05 07:44:00,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:44:00,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285564417] [2021-06-05 07:44:00,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285564417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:44:00,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563646823] [2021-06-05 07:44:00,824 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 [2021-06-05 07:44:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:44:00,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:44:00,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:44:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 07:44:01,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563646823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:44:01,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:44:01,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-06-05 07:44:01,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082049218] [2021-06-05 07:44:01,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:44:01,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:44:01,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:44:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:44:01,129 INFO L87 Difference]: Start difference. First operand 19711 states and 68105 transitions. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:01,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:44:01,482 INFO L93 Difference]: Finished difference Result 20688 states and 69859 transitions. [2021-06-05 07:44:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:44:01,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-06-05 07:44:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:44:01,522 INFO L225 Difference]: With dead ends: 20688 [2021-06-05 07:44:01,523 INFO L226 Difference]: Without dead ends: 20688 [2021-06-05 07:44:01,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 142.7ms TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:44:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20688 states. [2021-06-05 07:44:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20688 to 19833. [2021-06-05 07:44:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19833 states, 19822 states have (on average 3.416607809504591) internal successors, (67724), 19832 states have internal predecessors, (67724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19833 states to 19833 states and 67724 transitions. [2021-06-05 07:44:01,932 INFO L78 Accepts]: Start accepts. Automaton has 19833 states and 67724 transitions. Word has length 119 [2021-06-05 07:44:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:44:01,932 INFO L482 AbstractCegarLoop]: Abstraction has 19833 states and 67724 transitions. [2021-06-05 07:44:01,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 19833 states and 67724 transitions. [2021-06-05 07:44:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-06-05 07:44:01,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:44:01,966 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:44:02,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:44:02,166 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:44:02,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:44:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1545072859, now seen corresponding path program 1 times [2021-06-05 07:44:02,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:44:02,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351653341] [2021-06-05 07:44:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:44:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:44:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-05 07:44:02,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:44:02,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351653341] [2021-06-05 07:44:02,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351653341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:44:02,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88180109] [2021-06-05 07:44:02,277 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 [2021-06-05 07:44:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:44:02,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:44:02,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:44:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-05 07:44:02,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88180109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:44:02,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:44:02,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-06-05 07:44:02,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569922748] [2021-06-05 07:44:02,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:44:02,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:44:02,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:44:02,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:44:02,868 INFO L87 Difference]: Start difference. First operand 19833 states and 67724 transitions. Second operand has 21 states, 21 states have (on average 9.333333333333334) internal successors, (196), 21 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:44:03,012 INFO L93 Difference]: Finished difference Result 6739 states and 25274 transitions. [2021-06-05 07:44:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:44:03,012 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.333333333333334) internal successors, (196), 21 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-06-05 07:44:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:44:03,012 INFO L225 Difference]: With dead ends: 6739 [2021-06-05 07:44:03,012 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 07:44:03,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 328.5ms TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:44:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 07:44:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 07:44:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 07:44:03,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2021-06-05 07:44:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:44:03,013 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 07:44:03,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 9.333333333333334) internal successors, (196), 21 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 07:44:03,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 07:44:03,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:44:03,229 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 07:44:03,229 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:44:03,230 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:44:03,230 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:44:03,230 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:44:03,230 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:44:03,230 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:44:03,230 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:44:03,230 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:44:03,230 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 07:44:03,231 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 110 transitions, 264 flow [2021-06-05 07:44:06,964 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:44:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-06-05 07:44:07,050 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:44:07,051 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:44:07,051 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 07:44:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:44:07,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1407006812, now seen corresponding path program 1 times [2021-06-05 07:44:07,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:44:07,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495128777] [2021-06-05 07:44:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:44:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:44:07,062 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:44:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:44:07,072 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:44:07,080 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 07:44:07,081 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 07:44:07,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 07:44:07,081 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 07:44:07,081 WARN L242 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 07:44:07,081 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,088 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,089 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,090 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,091 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,092 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,092 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,092 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,092 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,093 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,094 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,094 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:44:07,098 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-05 07:44:07,099 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:44:07,099 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:44:07,099 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:44:07,099 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:44:07,099 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:44:07,099 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:44:07,099 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:44:07,099 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:44:07,099 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:44:07,100 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 116 transitions, 292 flow [2021-06-05 07:46:24,397 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:46:24,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:46:24,851 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:46:24,851 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:46:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:46:24,851 INFO L82 PathProgramCache]: Analyzing trace with hash 305910707, now seen corresponding path program 1 times [2021-06-05 07:46:24,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:46:24,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886944364] [2021-06-05 07:46:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:46:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:46:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:46:24,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:46:24,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886944364] [2021-06-05 07:46:24,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886944364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:46:24,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:46:24,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:46:24,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990760389] [2021-06-05 07:46:24,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 07:46:24,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:46:24,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 07:46:24,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:46:25,195 INFO L87 Difference]: Start difference. First operand has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:46:27,739 INFO L93 Difference]: Finished difference Result 283302 states and 1255667 transitions. [2021-06-05 07:46:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 07:46:27,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:46:27,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:46:29,125 INFO L225 Difference]: With dead ends: 283302 [2021-06-05 07:46:29,126 INFO L226 Difference]: Without dead ends: 208516 [2021-06-05 07:46:29,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 07:46:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208516 states. [2021-06-05 07:46:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208516 to 208516. [2021-06-05 07:46:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208516 states, 208484 states have (on average 4.378566220909039) internal successors, (912861), 208515 states have internal predecessors, (912861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208516 states to 208516 states and 912861 transitions. [2021-06-05 07:46:37,693 INFO L78 Accepts]: Start accepts. Automaton has 208516 states and 912861 transitions. Word has length 41 [2021-06-05 07:46:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:46:37,693 INFO L482 AbstractCegarLoop]: Abstraction has 208516 states and 912861 transitions. [2021-06-05 07:46:37,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 208516 states and 912861 transitions. [2021-06-05 07:46:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 07:46:37,694 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:46:37,694 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:46:37,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 07:46:37,694 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:46:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:46:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1025101332, now seen corresponding path program 1 times [2021-06-05 07:46:37,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:46:37,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617863631] [2021-06-05 07:46:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:46:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:46:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:46:37,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:46:37,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617863631] [2021-06-05 07:46:37,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617863631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:46:37,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:46:37,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 07:46:37,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023225528] [2021-06-05 07:46:37,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 07:46:37,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:46:37,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 07:46:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:46:37,715 INFO L87 Difference]: Start difference. First operand 208516 states and 912861 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:46:38,832 INFO L93 Difference]: Finished difference Result 167104 states and 695317 transitions. [2021-06-05 07:46:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 07:46:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 07:46:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:46:39,808 INFO L225 Difference]: With dead ends: 167104 [2021-06-05 07:46:39,808 INFO L226 Difference]: Without dead ends: 167104 [2021-06-05 07:46:39,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 07:46:41,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167104 states. [2021-06-05 07:46:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167104 to 162420. [2021-06-05 07:46:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162420 states, 162389 states have (on average 4.17813398690798) internal successors, (678483), 162419 states have internal predecessors, (678483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162420 states to 162420 states and 678483 transitions. [2021-06-05 07:46:45,489 INFO L78 Accepts]: Start accepts. Automaton has 162420 states and 678483 transitions. Word has length 41 [2021-06-05 07:46:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:46:45,489 INFO L482 AbstractCegarLoop]: Abstraction has 162420 states and 678483 transitions. [2021-06-05 07:46:45,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 162420 states and 678483 transitions. [2021-06-05 07:46:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 07:46:45,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:46:45,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:46:45,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 07:46:45,490 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:46:45,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:46:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1483455501, now seen corresponding path program 1 times [2021-06-05 07:46:45,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:46:45,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772410951] [2021-06-05 07:46:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:46:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:46:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:46:45,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:46:45,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772410951] [2021-06-05 07:46:45,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772410951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:46:45,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:46:45,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 07:46:45,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729434140] [2021-06-05 07:46:45,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 07:46:45,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:46:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 07:46:45,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 07:46:45,532 INFO L87 Difference]: Start difference. First operand 162420 states and 678483 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:46:47,495 INFO L93 Difference]: Finished difference Result 195010 states and 803743 transitions. [2021-06-05 07:46:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 07:46:47,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 07:46:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:46:48,178 INFO L225 Difference]: With dead ends: 195010 [2021-06-05 07:46:48,178 INFO L226 Difference]: Without dead ends: 195010 [2021-06-05 07:46:48,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:46:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195010 states. [2021-06-05 07:46:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195010 to 167071. [2021-06-05 07:46:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167071 states, 167040 states have (on average 4.169983237547893) internal successors, (696554), 167070 states have internal predecessors, (696554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167071 states to 167071 states and 696554 transitions. [2021-06-05 07:46:55,908 INFO L78 Accepts]: Start accepts. Automaton has 167071 states and 696554 transitions. Word has length 69 [2021-06-05 07:46:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:46:55,908 INFO L482 AbstractCegarLoop]: Abstraction has 167071 states and 696554 transitions. [2021-06-05 07:46:55,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 167071 states and 696554 transitions. [2021-06-05 07:46:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-06-05 07:46:55,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:46:55,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:46:55,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 07:46:55,914 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:46:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:46:55,918 INFO L82 PathProgramCache]: Analyzing trace with hash 314032417, now seen corresponding path program 1 times [2021-06-05 07:46:55,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:46:55,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745745361] [2021-06-05 07:46:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:46:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:46:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:46:55,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:46:55,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745745361] [2021-06-05 07:46:55,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745745361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:46:55,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633387157] [2021-06-05 07:46:55,957 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 [2021-06-05 07:46:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:46:56,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 07:46:56,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:46:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:46:56,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633387157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:46:56,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:46:56,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-06-05 07:46:56,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009013137] [2021-06-05 07:46:56,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:46:56,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:46:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:46:56,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:46:56,262 INFO L87 Difference]: Start difference. First operand 167071 states and 696554 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:46:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:46:57,816 INFO L93 Difference]: Finished difference Result 171726 states and 713338 transitions. [2021-06-05 07:46:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 07:46:57,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-06-05 07:46:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:46:58,402 INFO L225 Difference]: With dead ends: 171726 [2021-06-05 07:46:58,403 INFO L226 Difference]: Without dead ends: 171726 [2021-06-05 07:46:58,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:47:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171726 states. [2021-06-05 07:47:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171726 to 167061. [2021-06-05 07:47:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167061 states, 167030 states have (on average 4.170095192480392) internal successors, (696531), 167060 states have internal predecessors, (696531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167061 states to 167061 states and 696531 transitions. [2021-06-05 07:47:04,930 INFO L78 Accepts]: Start accepts. Automaton has 167061 states and 696531 transitions. Word has length 76 [2021-06-05 07:47:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:47:04,931 INFO L482 AbstractCegarLoop]: Abstraction has 167061 states and 696531 transitions. [2021-06-05 07:47:04,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 167061 states and 696531 transitions. [2021-06-05 07:47:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-06-05 07:47:04,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:47:04,941 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:47:05,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:47:05,156 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:47:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:47:05,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1202886806, now seen corresponding path program 1 times [2021-06-05 07:47:05,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:47:05,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406728146] [2021-06-05 07:47:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:47:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-05 07:47:05,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:47:05,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406728146] [2021-06-05 07:47:05,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406728146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:05,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535940561] [2021-06-05 07:47:05,201 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 [2021-06-05 07:47:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:05,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 07:47:05,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:47:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 07:47:05,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535940561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:05,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:47:05,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-06-05 07:47:05,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474004627] [2021-06-05 07:47:05,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:47:05,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:47:05,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:47:05,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:47:05,438 INFO L87 Difference]: Start difference. First operand 167061 states and 696531 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:47:06,596 INFO L93 Difference]: Finished difference Result 125096 states and 510704 transitions. [2021-06-05 07:47:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:47:06,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-06-05 07:47:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:47:07,019 INFO L225 Difference]: With dead ends: 125096 [2021-06-05 07:47:07,019 INFO L226 Difference]: Without dead ends: 125096 [2021-06-05 07:47:07,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:47:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125096 states. [2021-06-05 07:47:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125096 to 122711. [2021-06-05 07:47:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122711 states, 122685 states have (on average 4.104788686473489) internal successors, (503596), 122710 states have internal predecessors, (503596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122711 states to 122711 states and 503596 transitions. [2021-06-05 07:47:11,574 INFO L78 Accepts]: Start accepts. Automaton has 122711 states and 503596 transitions. Word has length 91 [2021-06-05 07:47:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:47:11,574 INFO L482 AbstractCegarLoop]: Abstraction has 122711 states and 503596 transitions. [2021-06-05 07:47:11,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 122711 states and 503596 transitions. [2021-06-05 07:47:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-06-05 07:47:11,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:47:11,703 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:47:11,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:47:11,917 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:47:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:47:11,917 INFO L82 PathProgramCache]: Analyzing trace with hash 118398886, now seen corresponding path program 1 times [2021-06-05 07:47:11,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:47:11,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951217696] [2021-06-05 07:47:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:47:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-06-05 07:47:11,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:47:11,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951217696] [2021-06-05 07:47:11,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951217696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:11,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361418799] [2021-06-05 07:47:11,965 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 [2021-06-05 07:47:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:12,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:47:12,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:47:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-05 07:47:12,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361418799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:12,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:47:12,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-06-05 07:47:12,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755235987] [2021-06-05 07:47:12,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:47:12,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:47:12,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:47:12,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:47:12,247 INFO L87 Difference]: Start difference. First operand 122711 states and 503596 transitions. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:47:13,553 INFO L93 Difference]: Finished difference Result 139948 states and 559578 transitions. [2021-06-05 07:47:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:47:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-06-05 07:47:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:47:14,052 INFO L225 Difference]: With dead ends: 139948 [2021-06-05 07:47:14,052 INFO L226 Difference]: Without dead ends: 139948 [2021-06-05 07:47:14,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 153.3ms TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:47:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139948 states. [2021-06-05 07:47:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139948 to 132318. [2021-06-05 07:47:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132318 states, 132292 states have (on average 4.04293532488737) internal successors, (534848), 132317 states have internal predecessors, (534848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132318 states to 132318 states and 534848 transitions. [2021-06-05 07:47:18,633 INFO L78 Accepts]: Start accepts. Automaton has 132318 states and 534848 transitions. Word has length 119 [2021-06-05 07:47:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:47:18,633 INFO L482 AbstractCegarLoop]: Abstraction has 132318 states and 534848 transitions. [2021-06-05 07:47:18,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 132318 states and 534848 transitions. [2021-06-05 07:47:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-06-05 07:47:18,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:47:18,850 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:47:19,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-06-05 07:47:19,050 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:47:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:47:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash 123912781, now seen corresponding path program 1 times [2021-06-05 07:47:19,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:47:19,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984777131] [2021-06-05 07:47:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:47:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-05 07:47:19,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:47:19,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984777131] [2021-06-05 07:47:19,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984777131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:19,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513060863] [2021-06-05 07:47:19,123 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 [2021-06-05 07:47:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:19,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:47:19,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:47:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-05 07:47:19,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513060863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:19,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:47:19,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-06-05 07:47:19,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113885817] [2021-06-05 07:47:19,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:47:19,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:47:19,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:47:19,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:47:19,981 INFO L87 Difference]: Start difference. First operand 132318 states and 534848 transitions. Second operand has 21 states, 21 states have (on average 9.238095238095237) internal successors, (194), 21 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:47:20,706 INFO L93 Difference]: Finished difference Result 126193 states and 511023 transitions. [2021-06-05 07:47:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:47:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.238095238095237) internal successors, (194), 21 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-06-05 07:47:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:47:21,561 INFO L225 Difference]: With dead ends: 126193 [2021-06-05 07:47:21,561 INFO L226 Difference]: Without dead ends: 126193 [2021-06-05 07:47:21,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 199.3ms TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:47:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126193 states. [2021-06-05 07:47:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126193 to 126193. [2021-06-05 07:47:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126193 states, 126167 states have (on average 4.05036974803237) internal successors, (511023), 126192 states have internal predecessors, (511023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126193 states to 126193 states and 511023 transitions. [2021-06-05 07:47:25,977 INFO L78 Accepts]: Start accepts. Automaton has 126193 states and 511023 transitions. Word has length 141 [2021-06-05 07:47:25,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:47:25,977 INFO L482 AbstractCegarLoop]: Abstraction has 126193 states and 511023 transitions. [2021-06-05 07:47:25,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 9.238095238095237) internal successors, (194), 21 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 126193 states and 511023 transitions. [2021-06-05 07:47:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-06-05 07:47:26,686 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:47:26,686 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:47:26,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:47:26,901 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:47:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:47:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1761948041, now seen corresponding path program 1 times [2021-06-05 07:47:26,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:47:26,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25848935] [2021-06-05 07:47:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:47:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-05 07:47:26,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:47:26,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25848935] [2021-06-05 07:47:26,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25848935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:26,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930713462] [2021-06-05 07:47:26,990 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 [2021-06-05 07:47:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:47:27,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:47:27,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:47:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-05 07:47:27,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930713462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:47:27,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:47:27,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-06-05 07:47:27,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649660781] [2021-06-05 07:47:27,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:47:27,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:47:27,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:47:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:47:27,374 INFO L87 Difference]: Start difference. First operand 126193 states and 511023 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:47:27,656 INFO L93 Difference]: Finished difference Result 33614 states and 153149 transitions. [2021-06-05 07:47:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:47:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-06-05 07:47:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:47:27,657 INFO L225 Difference]: With dead ends: 33614 [2021-06-05 07:47:27,657 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 07:47:27,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 229.2ms TimeCoverageRelationStatistics Valid=360, Invalid=830, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:47:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 07:47:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 07:47:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 07:47:27,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 156 [2021-06-05 07:47:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:47:27,657 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 07:47:27,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:47:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 07:47:27,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 07:47:27,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-06-05 07:47:27,858 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 07:47:27,858 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:47:27,859 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:47:27,859 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:47:27,859 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:47:27,859 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:47:27,859 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:47:27,859 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:47:27,859 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:47:27,859 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 07:47:27,860 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 116 transitions, 292 flow [2021-06-05 07:49:39,984 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:49:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:49:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-06-05 07:49:40,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:49:40,458 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:49:40,458 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 07:49:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:49:40,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1679649464, now seen corresponding path program 1 times [2021-06-05 07:49:40,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:49:40,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228423189] [2021-06-05 07:49:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:49:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:49:40,475 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:49:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 07:49:40,498 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 07:49:40,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 07:49:40,508 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 07:49:40,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 07:49:40,508 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 07:49:40,508 WARN L242 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 07:49:40,508 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-06-05 07:49:40,514 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,515 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,516 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,517 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,518 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,519 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,519 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,519 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,519 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,520 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,520 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,520 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,520 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,521 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,522 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,522 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,522 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,522 WARN L313 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,522 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:49:40,526 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-06-05 07:49:40,527 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:49:40,527 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:49:40,527 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:49:40,527 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:49:40,527 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:49:40,527 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:49:40,527 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:49:40,527 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:49:40,527 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:49:40,528 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 122 places, 122 transitions, 322 flow Received shutdown request... [2021-06-05 07:57:39,438 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 07:57:39,438 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-06-05 07:57:39,438 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 07:57:39,439 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:57:39,439 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:57:39,439 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:57:39,439 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:57:39,439 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:57:39,439 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:57:39,439 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:57:39,439 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 07:57:39,440 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 122 places, 122 transitions, 322 flow [2021-06-05 07:57:39,440 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 07:57:39,440 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-06-05 07:57:39,440 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 6 thread instances [2021-06-05 07:57:39,442 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 07:57:39,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:57:39 BasicIcfg [2021-06-05 07:57:39,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 07:57:39,443 INFO L168 Benchmark]: Toolchain (without parser) took 835601.14 ms. Allocated memory was 341.8 MB in the beginning and 15.6 GB in the end (delta: 15.3 GB). Free memory was 303.1 MB in the beginning and 9.8 GB in the end (delta: -9.5 GB). Peak memory consumption was 5.8 GB. Max. memory is 16.0 GB. [2021-06-05 07:57:39,443 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 341.8 MB. Free memory is still 322.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:57:39,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.55 ms. Allocated memory is still 341.8 MB. Free memory was 302.9 MB in the beginning and 264.4 MB in the end (delta: 38.5 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.0 GB. [2021-06-05 07:57:39,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 341.8 MB. Free memory was 264.4 MB in the beginning and 262.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:57:39,443 INFO L168 Benchmark]: Boogie Preprocessor took 16.97 ms. Allocated memory is still 341.8 MB. Free memory was 262.3 MB in the beginning and 261.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:57:39,443 INFO L168 Benchmark]: RCFGBuilder took 349.42 ms. Allocated memory is still 341.8 MB. Free memory was 261.2 MB in the beginning and 234.1 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 07:57:39,443 INFO L168 Benchmark]: TraceAbstraction took 834695.51 ms. Allocated memory was 341.8 MB in the beginning and 15.6 GB in the end (delta: 15.3 GB). Free memory was 234.1 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 5.7 GB. Max. memory is 16.0 GB. [2021-06-05 07:57:39,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 341.8 MB. Free memory is still 322.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 490.55 ms. Allocated memory is still 341.8 MB. Free memory was 302.9 MB in the beginning and 264.4 MB in the end (delta: 38.5 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 341.8 MB. Free memory was 264.4 MB in the beginning and 262.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.97 ms. Allocated memory is still 341.8 MB. Free memory was 262.3 MB in the beginning and 261.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 349.42 ms. Allocated memory is still 341.8 MB. Free memory was 261.2 MB in the beginning and 234.1 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 834695.51 ms. Allocated memory was 341.8 MB in the beginning and 15.6 GB in the end (delta: 15.3 GB). Free memory was 234.1 MB in the beginning and 9.8 GB in the end (delta: -9.6 GB). Peak memory consumption was 5.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1111]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 122 places, 122 transitions, 322 flow. Already constructed 506138 states. Currently 46338 states in worklist.. - TimeoutResultAtElement [Line: 1130]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 122 places, 122 transitions, 322 flow. Already constructed 2 states. Currently 1 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1050.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 154.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 254 SDtfs, 210 SDslu, 251 SDs, 0 SdLazy, 110 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 75.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.7ms SsaConstructionTime, 83.8ms SatisfiabilityAnalysisTime, 355.1ms InterpolantComputationTime, 303 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 4 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1578.3ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 11.9ms, AutomataDifference: 242.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 381 SDtfs, 463 SDslu, 646 SDs, 0 SdLazy, 227 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 158.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1538occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 101.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 93 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.6ms SsaConstructionTime, 80.6ms SatisfiabilityAnalysisTime, 526.4ms InterpolantComputationTime, 485 NumberOfCodeBlocks, 485 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 478 ConstructedInterpolants, 0 QuantifiedInterpolants, 1398 SizeOfPredicates, 10 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 26/46 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3133.7ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 31.6ms, AutomataDifference: 565.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 286.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 535 SDtfs, 913 SDslu, 1249 SDs, 0 SdLazy, 369 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 163.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 268.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8718occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 562.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 838 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.1ms SsaConstructionTime, 151.8ms SatisfiabilityAnalysisTime, 650.8ms InterpolantComputationTime, 723 NumberOfCodeBlocks, 723 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 714 ConstructedInterpolants, 0 QuantifiedInterpolants, 2246 SizeOfPredicates, 18 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 95/164 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12225.7ms, OverallIterations: 7, TraceHistogramMax: 4, EmptinessCheckTime: 129.7ms, AutomataDifference: 2340.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2938.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 749 SDtfs, 1624 SDslu, 2668 SDs, 0 SdLazy, 609 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 375.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 491 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 627.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=50198occurred in iteration=0, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4109.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 6903 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 78.5ms SsaConstructionTime, 147.3ms SatisfiabilityAnalysisTime, 1395.6ms InterpolantComputationTime, 1005 NumberOfCodeBlocks, 1005 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 994 ConstructedInterpolants, 0 QuantifiedInterpolants, 3340 SizeOfPredicates, 28 NumberOfNonLiveVariables, 961 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 133/390 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 - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 110 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 200759.1ms, OverallIterations: 8, TraceHistogramMax: 5, EmptinessCheckTime: 1519.9ms, AutomataDifference: 16394.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 137298.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 956 SDtfs, 2827 SDslu, 3225 SDs, 0 SdLazy, 710 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 942.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 670 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 732.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=291078occurred in iteration=0, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42052.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 47303 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 82.0ms SsaConstructionTime, 174.1ms SatisfiabilityAnalysisTime, 1778.5ms InterpolantComputationTime, 1317 NumberOfCodeBlocks, 1317 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1304 ConstructedInterpolants, 0 QuantifiedInterpolants, 4494 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1301 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 171/738 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 - StatisticsResult: Ultimate Automizer benchmark data with 6 thread instances CFG has 8 procedures, 115 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 478910.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 478910.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 90 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 85.2ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 1.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5ms SsaConstructionTime, 15.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 61.4ms, OverallIterations: 1, TraceHistogramMax: 3, EmptinessCheckTime: 3.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1538occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 8.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 3 thread instances CFG has 5 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 234.0ms, OverallIterations: 1, TraceHistogramMax: 4, EmptinessCheckTime: 22.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 177.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8718occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 7.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 4 thread instances CFG has 6 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3850.8ms, OverallIterations: 1, TraceHistogramMax: 5, EmptinessCheckTime: 86.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3733.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=50198occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2ms SsaConstructionTime, 8.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 5 thread instances CFG has 7 procedures, 110 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 132649.6ms, OverallIterations: 1, TraceHistogramMax: 6, EmptinessCheckTime: 473.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 132125.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=291078occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3ms SsaConstructionTime, 13.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 6 thread instances CFG has 8 procedures, 115 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown