/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:49:34,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:49:34,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:49:34,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:49:34,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:49:34,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:49:34,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:49:34,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:49:34,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:49:34,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:49:34,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:49:34,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:49:34,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:49:34,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:49:34,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:49:34,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:49:34,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:49:34,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:49:34,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:49:34,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:49:34,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:49:34,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:49:34,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:49:34,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:49:34,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 18:49:34,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:49:34,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:49:34,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:49:34,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:49:34,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:49:34,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:49:34,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:49:34,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:49:34,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:49:34,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:49:34,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:49:34,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:49:34,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:49:34,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:49:34,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:49:34,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:49:34,906 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:49:34,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:49:34,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:49:34,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:49:34,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:49:34,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:49:34,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:49:34,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:49:34,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:49:34,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:49:34,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:49:34,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:49:34,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:49:34,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:49:34,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:49:34,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:49:34,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:49:34,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:49:34,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:49:34,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:49:34,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:49:34,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:49:34,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:49:34,911 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:49:34,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:49:34,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:49:35,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:49:35,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:49:35,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:49:35,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:49:35,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:49:35,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-11 18:49:35,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3c59100b/9e82f03bc71b4133880898ada205d915/FLAGa0e00ed2b [2020-10-11 18:49:35,847 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:49:35,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-11 18:49:35,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3c59100b/9e82f03bc71b4133880898ada205d915/FLAGa0e00ed2b [2020-10-11 18:49:36,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3c59100b/9e82f03bc71b4133880898ada205d915 [2020-10-11 18:49:36,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:49:36,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:49:36,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:49:36,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:49:36,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:49:36,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e464cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36, skipping insertion in model container [2020-10-11 18:49:36,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:49:36,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:49:36,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:49:36,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:49:36,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:49:36,750 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:49:36,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36 WrapperNode [2020-10-11 18:49:36,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:49:36,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:49:36,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:49:36,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:49:36,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:49:36,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:49:36,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:49:36,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:49:36,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... [2020-10-11 18:49:36,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:49:36,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:49:36,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:49:36,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:49:36,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:49:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-11 18:49:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-11 18:49:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:49:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:49:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:49:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:49:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:49:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:49:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:49:36,920 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:49:37,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:49:37,399 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-11 18:49:37,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:49:37 BoogieIcfgContainer [2020-10-11 18:49:37,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:49:37,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:49:37,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:49:37,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:49:37,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:49:36" (1/3) ... [2020-10-11 18:49:37,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301c0b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:49:37, skipping insertion in model container [2020-10-11 18:49:37,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:49:36" (2/3) ... [2020-10-11 18:49:37,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301c0b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:49:37, skipping insertion in model container [2020-10-11 18:49:37,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:49:37" (3/3) ... [2020-10-11 18:49:37,410 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-11 18:49:37,421 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:49:37,428 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:49:37,429 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:49:37,454 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,454 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,455 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,455 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,455 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,456 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,456 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,457 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,457 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,457 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,457 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,458 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,458 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,458 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,458 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,459 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,459 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,459 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,459 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,460 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,460 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,460 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,460 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,461 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,461 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,461 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,461 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,465 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,465 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,466 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,466 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,466 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,466 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,466 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,467 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,467 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,467 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,467 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:49:37,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 18:49:37,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:49:37,507 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:49:37,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:49:37,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:49:37,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:49:37,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:49:37,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:49:37,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:49:37,520 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-10-11 18:49:37,565 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-11 18:49:37,565 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:49:37,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-11 18:49:37,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 87 transitions, 179 flow [2020-10-11 18:49:37,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 175 flow [2020-10-11 18:49:37,599 INFO L129 PetriNetUnfolder]: 5/67 cut-off events. [2020-10-11 18:49:37,600 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:49:37,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:37,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:37,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1968156304, now seen corresponding path program 1 times [2020-10-11 18:49:37,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:37,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879200907] [2020-10-11 18:49:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:37,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879200907] [2020-10-11 18:49:37,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:37,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 18:49:37,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690078327] [2020-10-11 18:49:37,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 18:49:37,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 18:49:37,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 18:49:37,913 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 87 [2020-10-11 18:49:37,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 175 flow. Second operand 3 states. [2020-10-11 18:49:37,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:37,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 87 [2020-10-11 18:49:37,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:37,980 INFO L129 PetriNetUnfolder]: 8/175 cut-off events. [2020-10-11 18:49:37,981 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:49:37,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 175 events. 8/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 548 event pairs, 0 based on Foata normal form. 7/168 useless extension candidates. Maximal degree in co-relation 164. Up to 6 conditions per place. [2020-10-11 18:49:37,985 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 3 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2020-10-11 18:49:37,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 185 flow [2020-10-11 18:49:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 18:49:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 18:49:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2020-10-11 18:49:38,002 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9616858237547893 [2020-10-11 18:49:38,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2020-10-11 18:49:38,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2020-10-11 18:49:38,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:38,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2020-10-11 18:49:38,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 18:49:38,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 18:49:38,019 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 18:49:38,021 INFO L185 Difference]: Start difference. First operand has 84 places, 86 transitions, 175 flow. Second operand 3 states and 251 transitions. [2020-10-11 18:49:38,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 185 flow [2020-10-11 18:49:38,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 18:49:38,033 INFO L241 Difference]: Finished difference. Result has 87 places, 85 transitions, 188 flow [2020-10-11 18:49:38,036 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2020-10-11 18:49:38,037 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2020-10-11 18:49:38,037 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 188 flow [2020-10-11 18:49:38,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 18:49:38,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:38,038 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:49:38,039 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash 875700068, now seen corresponding path program 1 times [2020-10-11 18:49:38,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:38,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828798230] [2020-10-11 18:49:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:38,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828798230] [2020-10-11 18:49:38,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:38,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 18:49:38,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289602290] [2020-10-11 18:49:38,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 18:49:38,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:38,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 18:49:38,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 18:49:38,254 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 87 [2020-10-11 18:49:38,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 188 flow. Second operand 5 states. [2020-10-11 18:49:38,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:38,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 87 [2020-10-11 18:49:38,256 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:38,390 INFO L129 PetriNetUnfolder]: 21/321 cut-off events. [2020-10-11 18:49:38,390 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 18:49:38,394 INFO L80 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 321 events. 21/321 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1551 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2020-10-11 18:49:38,395 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 9 selfloop transitions, 7 changer transitions 1/94 dead transitions. [2020-10-11 18:49:38,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 240 flow [2020-10-11 18:49:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:49:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:49:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2020-10-11 18:49:38,402 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9123563218390804 [2020-10-11 18:49:38,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2020-10-11 18:49:38,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2020-10-11 18:49:38,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:38,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2020-10-11 18:49:38,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:49:38,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:49:38,410 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:49:38,410 INFO L185 Difference]: Start difference. First operand has 87 places, 85 transitions, 188 flow. Second operand 8 states and 635 transitions. [2020-10-11 18:49:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 240 flow [2020-10-11 18:49:38,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 18:49:38,414 INFO L241 Difference]: Finished difference. Result has 96 places, 90 transitions, 225 flow [2020-10-11 18:49:38,415 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=225, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2020-10-11 18:49:38,416 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2020-10-11 18:49:38,416 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 225 flow [2020-10-11 18:49:38,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 18:49:38,416 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:38,416 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:38,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:49:38,417 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1714424421, now seen corresponding path program 1 times [2020-10-11 18:49:38,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:38,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613855144] [2020-10-11 18:49:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:38,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613855144] [2020-10-11 18:49:38,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:38,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 18:49:38,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813762932] [2020-10-11 18:49:38,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 18:49:38,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 18:49:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 18:49:38,598 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 87 [2020-10-11 18:49:38,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 225 flow. Second operand 5 states. [2020-10-11 18:49:38,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:38,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 87 [2020-10-11 18:49:38,599 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:38,739 INFO L129 PetriNetUnfolder]: 69/591 cut-off events. [2020-10-11 18:49:38,739 INFO L130 PetriNetUnfolder]: For 17/18 co-relation queries the response was YES. [2020-10-11 18:49:38,742 INFO L80 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 591 events. 69/591 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4070 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 754. Up to 75 conditions per place. [2020-10-11 18:49:38,743 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 6 selfloop transitions, 2 changer transitions 42/102 dead transitions. [2020-10-11 18:49:38,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 293 flow [2020-10-11 18:49:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:49:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:49:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 624 transitions. [2020-10-11 18:49:38,746 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2020-10-11 18:49:38,747 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 624 transitions. [2020-10-11 18:49:38,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 624 transitions. [2020-10-11 18:49:38,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:38,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 624 transitions. [2020-10-11 18:49:38,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:49:38,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:49:38,752 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:49:38,752 INFO L185 Difference]: Start difference. First operand has 96 places, 90 transitions, 225 flow. Second operand 8 states and 624 transitions. [2020-10-11 18:49:38,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 293 flow [2020-10-11 18:49:38,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 293 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-11 18:49:38,757 INFO L241 Difference]: Finished difference. Result has 107 places, 60 transitions, 164 flow [2020-10-11 18:49:38,758 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=107, PETRI_TRANSITIONS=60} [2020-10-11 18:49:38,758 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2020-10-11 18:49:38,758 INFO L481 AbstractCegarLoop]: Abstraction has has 107 places, 60 transitions, 164 flow [2020-10-11 18:49:38,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 18:49:38,758 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:38,759 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:38,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:49:38,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:38,759 INFO L82 PathProgramCache]: Analyzing trace with hash -556148617, now seen corresponding path program 1 times [2020-10-11 18:49:38,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:38,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080134052] [2020-10-11 18:49:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:38,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080134052] [2020-10-11 18:49:38,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:38,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 18:49:38,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753753071] [2020-10-11 18:49:38,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 18:49:38,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 18:49:38,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 18:49:38,937 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 87 [2020-10-11 18:49:38,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 60 transitions, 164 flow. Second operand 5 states. [2020-10-11 18:49:38,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:38,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 87 [2020-10-11 18:49:38,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:38,999 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2020-10-11 18:49:38,999 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-10-11 18:49:39,000 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 96 events. 0/96 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2020-10-11 18:49:39,000 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 8 selfloop transitions, 0 changer transitions 5/63 dead transitions. [2020-10-11 18:49:39,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 63 transitions, 194 flow [2020-10-11 18:49:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:49:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:49:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2020-10-11 18:49:39,004 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8984674329501916 [2020-10-11 18:49:39,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 469 transitions. [2020-10-11 18:49:39,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 469 transitions. [2020-10-11 18:49:39,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:39,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 469 transitions. [2020-10-11 18:49:39,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:49:39,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:49:39,009 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:49:39,009 INFO L185 Difference]: Start difference. First operand has 107 places, 60 transitions, 164 flow. Second operand 6 states and 469 transitions. [2020-10-11 18:49:39,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 63 transitions, 194 flow [2020-10-11 18:49:39,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 166 flow, removed 8 selfloop flow, removed 12 redundant places. [2020-10-11 18:49:39,014 INFO L241 Difference]: Finished difference. Result has 73 places, 58 transitions, 138 flow [2020-10-11 18:49:39,014 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2020-10-11 18:49:39,015 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2020-10-11 18:49:39,015 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 138 flow [2020-10-11 18:49:39,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 18:49:39,015 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:39,016 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:39,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:49:39,016 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1687520221, now seen corresponding path program 1 times [2020-10-11 18:49:39,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:39,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527473341] [2020-10-11 18:49:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:49:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:49:39,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527473341] [2020-10-11 18:49:39,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:49:39,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:49:39,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99829380] [2020-10-11 18:49:39,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:49:39,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:49:39,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:49:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:49:39,536 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2020-10-11 18:49:39,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 138 flow. Second operand 8 states. [2020-10-11 18:49:39,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:49:39,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2020-10-11 18:49:39,537 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:49:39,648 INFO L129 PetriNetUnfolder]: 18/235 cut-off events. [2020-10-11 18:49:39,649 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:49:39,650 INFO L80 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 235 events. 18/235 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1213 event pairs, 10 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 381. Up to 36 conditions per place. [2020-10-11 18:49:39,651 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 12 selfloop transitions, 2 changer transitions 10/68 dead transitions. [2020-10-11 18:49:39,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 206 flow [2020-10-11 18:49:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:49:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:49:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2020-10-11 18:49:39,654 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8250319284802043 [2020-10-11 18:49:39,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2020-10-11 18:49:39,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2020-10-11 18:49:39,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:49:39,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2020-10-11 18:49:39,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:49:39,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:49:39,658 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:49:39,658 INFO L185 Difference]: Start difference. First operand has 73 places, 58 transitions, 138 flow. Second operand 9 states and 646 transitions. [2020-10-11 18:49:39,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 206 flow [2020-10-11 18:49:39,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 198 flow, removed 4 selfloop flow, removed 4 redundant places. [2020-10-11 18:49:39,664 INFO L241 Difference]: Finished difference. Result has 78 places, 58 transitions, 148 flow [2020-10-11 18:49:39,664 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=148, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2020-10-11 18:49:39,665 INFO L341 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2020-10-11 18:49:39,665 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 148 flow [2020-10-11 18:49:39,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:49:39,665 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:49:39,665 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:49:39,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:49:39,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:49:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:49:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash 132352305, now seen corresponding path program 2 times [2020-10-11 18:49:39,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:49:39,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209150743] [2020-10-11 18:49:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:49:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 18:49:39,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 18:49:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 18:49:39,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 18:49:39,774 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 18:49:39,774 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 18:49:39,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:49:39,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:49:39 BasicIcfg [2020-10-11 18:49:39,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:49:39,869 INFO L168 Benchmark]: Toolchain (without parser) took 3785.32 ms. Allocated memory was 249.6 MB in the beginning and 372.2 MB in the end (delta: 122.7 MB). Free memory was 201.8 MB in the beginning and 294.4 MB in the end (delta: -92.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:39,869 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 249.6 MB. Free memory is still 223.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:49:39,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.14 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 201.8 MB in the beginning and 264.7 MB in the end (delta: -62.9 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:39,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.30 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 262.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:39,872 INFO L168 Benchmark]: Boogie Preprocessor took 26.67 ms. Allocated memory is still 309.3 MB. Free memory was 262.2 MB in the beginning and 259.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:39,873 INFO L168 Benchmark]: RCFGBuilder took 574.47 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 232.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:39,874 INFO L168 Benchmark]: TraceAbstraction took 2460.04 ms. Allocated memory was 309.3 MB in the beginning and 372.2 MB in the end (delta: 62.9 MB). Free memory was 232.8 MB in the beginning and 294.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:49:39,882 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 249.6 MB. Free memory is still 223.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 667.14 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 201.8 MB in the beginning and 264.7 MB in the end (delta: -62.9 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.30 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 262.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.67 ms. Allocated memory is still 309.3 MB. Free memory was 262.2 MB in the beginning and 259.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 574.47 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 232.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2460.04 ms. Allocated memory was 309.3 MB in the beginning and 372.2 MB in the end (delta: 62.9 MB). Free memory was 232.8 MB in the beginning and 294.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L687] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L688] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L689] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L729] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L730] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L731] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L732] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L733] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L713] 0 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L691] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L722] 1 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L706] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L700] 1 pendingIo-- [L701] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L703] 1 return tmp; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L707] 1 pending = dec() VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L694] 0 pendingIo = pendingIo + 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L708] COND TRUE 1 pending == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L709] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L675] COND FALSE 1 !(!cond) VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L725] 1 stopped = 1 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L696] 0 return 0; VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L714] 0 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L715] COND TRUE 0 status == 0 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L678] COND TRUE 0 !(cond) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L679] 0 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 95 SDslu, 197 SDs, 0 SdLazy, 194 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 20229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...