/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-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:47:47,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:47:47,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:47:47,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:47:47,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:47:47,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:47:47,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:47:47,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:47:47,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:47:47,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:47:47,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:47:47,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:47:47,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:47:47,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:47:47,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:47:47,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:47:47,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:47:47,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:47:47,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:47:47,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:47:47,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:47:47,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:47:47,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:47:47,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:47:47,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:47:47,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:47:47,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:47:47,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:47:47,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:47:47,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:47:47,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:47:47,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:47:47,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:47:47,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:47:47,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:47:47,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:47:47,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:47:47,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:47:47,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:47:47,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:47:47,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:47:47,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:47:47,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:47:47,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:47:47,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:47:47,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:47:47,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:47:47,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:47:47,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:47:47,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:47:47,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:47:47,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:47:47,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:47:47,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:47:47,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:47:47,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:47:47,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:47:47,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:47:47,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:47:47,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:47:47,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:47:47,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:47:47,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:47:47,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:47:47,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:47:47,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:47:47,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:47:47,750 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:47:47,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:47:47,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:47:47,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:47:47,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:47:48,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:47:48,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:47:48,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:47:48,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:47:48,071 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:47:48,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-09 17:47:48,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cbc25e4/1696b323af53438b8e348c1b31fa6f3e/FLAGeb60db3e9 [2020-10-09 17:47:48,622 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:47:48,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-09 17:47:48,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cbc25e4/1696b323af53438b8e348c1b31fa6f3e/FLAGeb60db3e9 [2020-10-09 17:47:48,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cbc25e4/1696b323af53438b8e348c1b31fa6f3e [2020-10-09 17:47:48,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:47:48,868 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:47:48,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:47:48,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:47:48,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:47:48,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:47:48" (1/1) ... [2020-10-09 17:47:48,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e18c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:48, skipping insertion in model container [2020-10-09 17:47:48,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:47:48" (1/1) ... [2020-10-09 17:47:48,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:47:48,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:47:49,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:47:49,470 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:47:49,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:47:49,605 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:47:49,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49 WrapperNode [2020-10-09 17:47:49,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:47:49,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:47:49,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:47:49,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:47:49,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:47:49,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:47:49,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:47:49,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:47:49,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (1/1) ... [2020-10-09 17:47:49,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:47:49,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:47:49,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:47:49,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:47:49,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (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 [2020-10-09 17:47:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:47:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:47:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:47:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:47:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:47:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:47:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:47:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:47:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:47:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:47:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 17:47:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 17:47:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:47:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:47:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:47:49,746 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:47:50,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:47:50,117 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:47:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:47:50 BoogieIcfgContainer [2020-10-09 17:47:50,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:47:50,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:47:50,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:47:50,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:47:50,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:47:48" (1/3) ... [2020-10-09 17:47:50,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7622b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:47:50, skipping insertion in model container [2020-10-09 17:47:50,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:49" (2/3) ... [2020-10-09 17:47:50,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7622b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:47:50, skipping insertion in model container [2020-10-09 17:47:50,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:47:50" (3/3) ... [2020-10-09 17:47:50,128 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-09 17:47:50,139 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:47:50,146 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:47:50,147 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:47:50,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,180 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,180 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,180 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,181 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,181 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,181 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,185 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,185 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,185 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,185 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:50,218 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 17:47:50,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:47:50,237 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:47:50,237 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:47:50,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:47:50,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:47:50,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:47:50,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:47:50,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:47:50,251 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-09 17:47:50,297 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-09 17:47:50,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:50,303 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-09 17:47:50,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 80 transitions, 180 flow [2020-10-09 17:47:50,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 63 transitions, 138 flow [2020-10-09 17:47:50,331 INFO L129 PetriNetUnfolder]: 1/62 cut-off events. [2020-10-09 17:47:50,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:50,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:50,333 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] [2020-10-09 17:47:50,334 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1602664477, now seen corresponding path program 1 times [2020-10-09 17:47:50,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:50,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535672534] [2020-10-09 17:47:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:50,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:50,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:50,559 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:50,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:50,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535672534] [2020-10-09 17:47:50,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:50,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:50,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247545249] [2020-10-09 17:47:50,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:50,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:50,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:50,896 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 80 [2020-10-09 17:47:50,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 138 flow. Second operand 8 states. [2020-10-09 17:47:50,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:50,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 80 [2020-10-09 17:47:50,900 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:51,176 INFO L129 PetriNetUnfolder]: 18/140 cut-off events. [2020-10-09 17:47:51,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:51,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 140 events. 18/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 462 event pairs, 0 based on Foata normal form. 8/145 useless extension candidates. Maximal degree in co-relation 188. Up to 15 conditions per place. [2020-10-09 17:47:51,182 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 10 selfloop transitions, 5 changer transitions 24/91 dead transitions. [2020-10-09 17:47:51,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 270 flow [2020-10-09 17:47:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2020-10-09 17:47:51,209 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9048076923076923 [2020-10-09 17:47:51,210 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2020-10-09 17:47:51,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2020-10-09 17:47:51,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:51,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2020-10-09 17:47:51,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:51,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:51,242 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:51,244 INFO L185 Difference]: Start difference. First operand has 75 places, 63 transitions, 138 flow. Second operand 13 states and 941 transitions. [2020-10-09 17:47:51,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 270 flow [2020-10-09 17:47:51,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 266 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 17:47:51,261 INFO L241 Difference]: Finished difference. Result has 94 places, 63 transitions, 172 flow [2020-10-09 17:47:51,271 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=172, PETRI_PLACES=94, PETRI_TRANSITIONS=63} [2020-10-09 17:47:51,272 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2020-10-09 17:47:51,272 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 63 transitions, 172 flow [2020-10-09 17:47:51,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:51,273 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:51,273 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] [2020-10-09 17:47:51,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:47:51,484 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1354739076, now seen corresponding path program 1 times [2020-10-09 17:47:51,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:51,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832182493] [2020-10-09 17:47:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:51,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:51,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:51,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:51,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832182493] [2020-10-09 17:47:51,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:51,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:51,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289956302] [2020-10-09 17:47:51,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:51,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:51,739 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 80 [2020-10-09 17:47:51,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 63 transitions, 172 flow. Second operand 8 states. [2020-10-09 17:47:51,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:51,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 80 [2020-10-09 17:47:51,741 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:51,823 INFO L129 PetriNetUnfolder]: 3/94 cut-off events. [2020-10-09 17:47:51,823 INFO L130 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2020-10-09 17:47:51,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 94 events. 3/94 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 212 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2020-10-09 17:47:51,825 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 6 selfloop transitions, 2 changer transitions 10/73 dead transitions. [2020-10-09 17:47:51,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 73 transitions, 256 flow [2020-10-09 17:47:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:47:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:47:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 650 transitions. [2020-10-09 17:47:51,828 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2020-10-09 17:47:51,828 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 650 transitions. [2020-10-09 17:47:51,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 650 transitions. [2020-10-09 17:47:51,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:51,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 650 transitions. [2020-10-09 17:47:51,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:47:51,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:47:51,832 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:47:51,832 INFO L185 Difference]: Start difference. First operand has 94 places, 63 transitions, 172 flow. Second operand 9 states and 650 transitions. [2020-10-09 17:47:51,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 73 transitions, 256 flow [2020-10-09 17:47:51,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 214 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:47:51,836 INFO L241 Difference]: Finished difference. Result has 90 places, 63 transitions, 174 flow [2020-10-09 17:47:51,837 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2020-10-09 17:47:51,837 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2020-10-09 17:47:51,837 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 174 flow [2020-10-09 17:47:51,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:51,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:51,838 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] [2020-10-09 17:47:52,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:47:52,058 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:52,058 INFO L82 PathProgramCache]: Analyzing trace with hash 66021797, now seen corresponding path program 1 times [2020-10-09 17:47:52,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:52,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506559547] [2020-10-09 17:47:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:52,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:52,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:52,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:52,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506559547] [2020-10-09 17:47:52,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:52,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:52,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230812364] [2020-10-09 17:47:52,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:52,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:52,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:52,410 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 80 [2020-10-09 17:47:52,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 174 flow. Second operand 8 states. [2020-10-09 17:47:52,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:52,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 80 [2020-10-09 17:47:52,411 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:52,559 INFO L129 PetriNetUnfolder]: 36/255 cut-off events. [2020-10-09 17:47:52,559 INFO L130 PetriNetUnfolder]: For 156/166 co-relation queries the response was YES. [2020-10-09 17:47:52,561 INFO L80 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 255 events. 36/255 cut-off events. For 156/166 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1420 event pairs, 0 based on Foata normal form. 10/258 useless extension candidates. Maximal degree in co-relation 476. Up to 28 conditions per place. [2020-10-09 17:47:52,562 INFO L132 encePairwiseOnDemand]: 73/80 looper letters, 10 selfloop transitions, 5 changer transitions 23/92 dead transitions. [2020-10-09 17:47:52,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 356 flow [2020-10-09 17:47:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 938 transitions. [2020-10-09 17:47:52,566 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9019230769230769 [2020-10-09 17:47:52,566 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 938 transitions. [2020-10-09 17:47:52,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 938 transitions. [2020-10-09 17:47:52,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:52,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 938 transitions. [2020-10-09 17:47:52,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:52,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:52,572 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:52,572 INFO L185 Difference]: Start difference. First operand has 90 places, 63 transitions, 174 flow. Second operand 13 states and 938 transitions. [2020-10-09 17:47:52,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 356 flow [2020-10-09 17:47:52,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 304 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:47:52,577 INFO L241 Difference]: Finished difference. Result has 99 places, 65 transitions, 200 flow [2020-10-09 17:47:52,577 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=200, PETRI_PLACES=99, PETRI_TRANSITIONS=65} [2020-10-09 17:47:52,578 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2020-10-09 17:47:52,578 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 65 transitions, 200 flow [2020-10-09 17:47:52,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:52,578 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:52,578 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] [2020-10-09 17:47:52,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:47:52,798 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:52,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1139027494, now seen corresponding path program 1 times [2020-10-09 17:47:52,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:52,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527407705] [2020-10-09 17:47:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:52,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:52,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:52,902 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:52,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:52,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527407705] [2020-10-09 17:47:52,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:52,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:52,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779669377] [2020-10-09 17:47:52,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:52,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:52,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:52,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:53,137 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 80 [2020-10-09 17:47:53,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 65 transitions, 200 flow. Second operand 8 states. [2020-10-09 17:47:53,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:53,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 80 [2020-10-09 17:47:53,139 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:53,243 INFO L129 PetriNetUnfolder]: 6/161 cut-off events. [2020-10-09 17:47:53,243 INFO L130 PetriNetUnfolder]: For 199/209 co-relation queries the response was YES. [2020-10-09 17:47:53,245 INFO L80 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 161 events. 6/161 cut-off events. For 199/209 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 702 event pairs, 0 based on Foata normal form. 4/161 useless extension candidates. Maximal degree in co-relation 311. Up to 22 conditions per place. [2020-10-09 17:47:53,246 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 6 selfloop transitions, 2 changer transitions 10/75 dead transitions. [2020-10-09 17:47:53,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 75 transitions, 290 flow [2020-10-09 17:47:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:47:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:47:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 650 transitions. [2020-10-09 17:47:53,250 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2020-10-09 17:47:53,250 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 650 transitions. [2020-10-09 17:47:53,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 650 transitions. [2020-10-09 17:47:53,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:53,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 650 transitions. [2020-10-09 17:47:53,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:47:53,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:47:53,255 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:47:53,256 INFO L185 Difference]: Start difference. First operand has 99 places, 65 transitions, 200 flow. Second operand 9 states and 650 transitions. [2020-10-09 17:47:53,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 75 transitions, 290 flow [2020-10-09 17:47:53,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 75 transitions, 248 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:47:53,264 INFO L241 Difference]: Finished difference. Result has 96 places, 65 transitions, 202 flow [2020-10-09 17:47:53,264 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=96, PETRI_TRANSITIONS=65} [2020-10-09 17:47:53,265 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2020-10-09 17:47:53,265 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 65 transitions, 202 flow [2020-10-09 17:47:53,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:53,265 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:53,265 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] [2020-10-09 17:47:53,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:47:53,480 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:53,480 INFO L82 PathProgramCache]: Analyzing trace with hash 510987559, now seen corresponding path program 1 times [2020-10-09 17:47:53,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:53,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344297210] [2020-10-09 17:47:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:53,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:53,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:53,560 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:53,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344297210] [2020-10-09 17:47:53,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:53,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:47:53,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578229039] [2020-10-09 17:47:53,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:53,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:53,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:53,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:53,943 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 80 [2020-10-09 17:47:53,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 65 transitions, 202 flow. Second operand 10 states. [2020-10-09 17:47:53,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:53,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 80 [2020-10-09 17:47:53,945 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:54,173 INFO L129 PetriNetUnfolder]: 14/295 cut-off events. [2020-10-09 17:47:54,173 INFO L130 PetriNetUnfolder]: For 441/576 co-relation queries the response was YES. [2020-10-09 17:47:54,175 INFO L80 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 295 events. 14/295 cut-off events. For 441/576 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1791 event pairs, 0 based on Foata normal form. 14/303 useless extension candidates. Maximal degree in co-relation 583. Up to 23 conditions per place. [2020-10-09 17:47:54,176 INFO L132 encePairwiseOnDemand]: 71/80 looper letters, 10 selfloop transitions, 7 changer transitions 18/87 dead transitions. [2020-10-09 17:47:54,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 87 transitions, 397 flow [2020-10-09 17:47:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 17:47:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-09 17:47:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1177 transitions. [2020-10-09 17:47:54,180 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8654411764705883 [2020-10-09 17:47:54,180 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1177 transitions. [2020-10-09 17:47:54,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1177 transitions. [2020-10-09 17:47:54,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:54,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1177 transitions. [2020-10-09 17:47:54,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-09 17:47:54,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-09 17:47:54,187 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-09 17:47:54,187 INFO L185 Difference]: Start difference. First operand has 96 places, 65 transitions, 202 flow. Second operand 17 states and 1177 transitions. [2020-10-09 17:47:54,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 87 transitions, 397 flow [2020-10-09 17:47:54,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 87 transitions, 341 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:47:54,192 INFO L241 Difference]: Finished difference. Result has 109 places, 65 transitions, 227 flow [2020-10-09 17:47:54,192 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=227, PETRI_PLACES=109, PETRI_TRANSITIONS=65} [2020-10-09 17:47:54,192 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 34 predicate places. [2020-10-09 17:47:54,193 INFO L481 AbstractCegarLoop]: Abstraction has has 109 places, 65 transitions, 227 flow [2020-10-09 17:47:54,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:54,193 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:54,193 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] [2020-10-09 17:47:54,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:47:54,405 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1577618521, now seen corresponding path program 2 times [2020-10-09 17:47:54,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:54,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840072864] [2020-10-09 17:47:54,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:54,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 17:47:54,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:54,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:54,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:54,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:54,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:54,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840072864] [2020-10-09 17:47:54,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:54,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:47:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105507578] [2020-10-09 17:47:54,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:54,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:54,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:54,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:54,717 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 80 [2020-10-09 17:47:54,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 65 transitions, 227 flow. Second operand 10 states. [2020-10-09 17:47:54,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:54,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 80 [2020-10-09 17:47:54,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:54,920 INFO L129 PetriNetUnfolder]: 14/279 cut-off events. [2020-10-09 17:47:54,920 INFO L130 PetriNetUnfolder]: For 528/571 co-relation queries the response was YES. [2020-10-09 17:47:54,922 INFO L80 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 279 events. 14/279 cut-off events. For 528/571 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1711 event pairs, 0 based on Foata normal form. 15/290 useless extension candidates. Maximal degree in co-relation 597. Up to 26 conditions per place. [2020-10-09 17:47:54,923 INFO L132 encePairwiseOnDemand]: 71/80 looper letters, 10 selfloop transitions, 7 changer transitions 18/87 dead transitions. [2020-10-09 17:47:54,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 87 transitions, 444 flow [2020-10-09 17:47:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 17:47:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-09 17:47:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1177 transitions. [2020-10-09 17:47:54,927 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8654411764705883 [2020-10-09 17:47:54,927 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1177 transitions. [2020-10-09 17:47:54,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1177 transitions. [2020-10-09 17:47:54,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:54,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1177 transitions. [2020-10-09 17:47:54,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-09 17:47:54,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-09 17:47:54,935 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-09 17:47:54,935 INFO L185 Difference]: Start difference. First operand has 109 places, 65 transitions, 227 flow. Second operand 17 states and 1177 transitions. [2020-10-09 17:47:54,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 87 transitions, 444 flow [2020-10-09 17:47:54,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 87 transitions, 336 flow, removed 45 selfloop flow, removed 15 redundant places. [2020-10-09 17:47:54,941 INFO L241 Difference]: Finished difference. Result has 110 places, 65 transitions, 226 flow [2020-10-09 17:47:54,942 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=226, PETRI_PLACES=110, PETRI_TRANSITIONS=65} [2020-10-09 17:47:54,942 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 35 predicate places. [2020-10-09 17:47:54,942 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 65 transitions, 226 flow [2020-10-09 17:47:54,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:54,942 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:54,943 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] [2020-10-09 17:47:55,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:47:55,154 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:55,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2020058683, now seen corresponding path program 3 times [2020-10-09 17:47:55,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:55,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785031459] [2020-10-09 17:47:55,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:55,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-09 17:47:55,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:47:55,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:55,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:55,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:55,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785031459] [2020-10-09 17:47:55,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:55,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:55,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571833203] [2020-10-09 17:47:55,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:55,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:55,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:55,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:55,403 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 80 [2020-10-09 17:47:55,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 65 transitions, 226 flow. Second operand 8 states. [2020-10-09 17:47:55,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:55,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 80 [2020-10-09 17:47:55,404 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:55,690 INFO L129 PetriNetUnfolder]: 641/1358 cut-off events. [2020-10-09 17:47:55,690 INFO L130 PetriNetUnfolder]: For 314/315 co-relation queries the response was YES. [2020-10-09 17:47:55,697 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1358 events. 641/1358 cut-off events. For 314/315 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9663 event pairs, 7 based on Foata normal form. 44/1344 useless extension candidates. Maximal degree in co-relation 2573. Up to 424 conditions per place. [2020-10-09 17:47:55,699 INFO L132 encePairwiseOnDemand]: 70/80 looper letters, 12 selfloop transitions, 11 changer transitions 35/112 dead transitions. [2020-10-09 17:47:55,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 436 flow [2020-10-09 17:47:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:47:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:47:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 853 transitions. [2020-10-09 17:47:55,703 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8885416666666667 [2020-10-09 17:47:55,703 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 853 transitions. [2020-10-09 17:47:55,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 853 transitions. [2020-10-09 17:47:55,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:55,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 853 transitions. [2020-10-09 17:47:55,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:47:55,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:47:55,707 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:47:55,708 INFO L185 Difference]: Start difference. First operand has 110 places, 65 transitions, 226 flow. Second operand 12 states and 853 transitions. [2020-10-09 17:47:55,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 436 flow [2020-10-09 17:47:55,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 112 transitions, 394 flow, removed 12 selfloop flow, removed 15 redundant places. [2020-10-09 17:47:55,713 INFO L241 Difference]: Finished difference. Result has 104 places, 73 transitions, 306 flow [2020-10-09 17:47:55,713 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2020-10-09 17:47:55,713 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2020-10-09 17:47:55,713 INFO L481 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 306 flow [2020-10-09 17:47:55,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:55,713 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:55,714 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] [2020-10-09 17:47:55,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:47:55,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:55,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1268172472, now seen corresponding path program 1 times [2020-10-09 17:47:55,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:55,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212208700] [2020-10-09 17:47:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:55,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:47:55,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:56,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:56,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:56,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212208700] [2020-10-09 17:47:56,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:56,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:47:56,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882486007] [2020-10-09 17:47:56,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:56,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:56,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:56,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:56,173 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 80 [2020-10-09 17:47:56,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 306 flow. Second operand 10 states. [2020-10-09 17:47:56,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:56,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 80 [2020-10-09 17:47:56,174 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:56,453 INFO L129 PetriNetUnfolder]: 240/628 cut-off events. [2020-10-09 17:47:56,454 INFO L130 PetriNetUnfolder]: For 3740/4102 co-relation queries the response was YES. [2020-10-09 17:47:56,457 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 628 events. 240/628 cut-off events. For 3740/4102 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3929 event pairs, 0 based on Foata normal form. 81/693 useless extension candidates. Maximal degree in co-relation 2902. Up to 313 conditions per place. [2020-10-09 17:47:56,458 INFO L132 encePairwiseOnDemand]: 70/80 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2020-10-09 17:47:56,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 730 flow [2020-10-09 17:47:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 17:47:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-09 17:47:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 977 transitions. [2020-10-09 17:47:56,462 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8723214285714286 [2020-10-09 17:47:56,462 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 977 transitions. [2020-10-09 17:47:56,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 977 transitions. [2020-10-09 17:47:56,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:56,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 977 transitions. [2020-10-09 17:47:56,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-09 17:47:56,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-09 17:47:56,467 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-09 17:47:56,467 INFO L185 Difference]: Start difference. First operand has 104 places, 73 transitions, 306 flow. Second operand 14 states and 977 transitions. [2020-10-09 17:47:56,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 730 flow [2020-10-09 17:47:56,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 583 flow, removed 62 selfloop flow, removed 11 redundant places. [2020-10-09 17:47:56,475 INFO L241 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2020-10-09 17:47:56,475 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2020-10-09 17:47:56,476 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2020-10-09 17:47:56,476 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2020-10-09 17:47:56,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:56,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-09 17:47:56,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:47:56 BasicIcfg [2020-10-09 17:47:56,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:47:56,698 INFO L168 Benchmark]: Toolchain (without parser) took 7829.28 ms. Allocated memory was 257.4 MB in the beginning and 457.2 MB in the end (delta: 199.8 MB). Free memory was 213.1 MB in the beginning and 382.4 MB in the end (delta: -169.3 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:56,699 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 257.4 MB. Free memory is still 233.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:47:56,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.90 ms. Allocated memory was 257.4 MB in the beginning and 329.8 MB in the end (delta: 72.4 MB). Free memory was 213.1 MB in the beginning and 283.2 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:56,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.51 ms. Allocated memory is still 329.8 MB. Free memory was 283.2 MB in the beginning and 280.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:56,701 INFO L168 Benchmark]: Boogie Preprocessor took 26.38 ms. Allocated memory is still 329.8 MB. Free memory was 280.7 MB in the beginning and 278.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:56,701 INFO L168 Benchmark]: RCFGBuilder took 438.53 ms. Allocated memory is still 329.8 MB. Free memory was 278.2 MB in the beginning and 253.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:56,703 INFO L168 Benchmark]: TraceAbstraction took 6574.72 ms. Allocated memory was 329.8 MB in the beginning and 457.2 MB in the end (delta: 127.4 MB). Free memory was 253.8 MB in the beginning and 382.4 MB in the end (delta: -128.6 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:47:56,707 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 257.4 MB. Free memory is still 233.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 736.90 ms. Allocated memory was 257.4 MB in the beginning and 329.8 MB in the end (delta: 72.4 MB). Free memory was 213.1 MB in the beginning and 283.2 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.51 ms. Allocated memory is still 329.8 MB. Free memory was 283.2 MB in the beginning and 280.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.38 ms. Allocated memory is still 329.8 MB. Free memory was 280.7 MB in the beginning and 278.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 438.53 ms. Allocated memory is still 329.8 MB. Free memory was 278.2 MB in the beginning and 253.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6574.72 ms. Allocated memory was 329.8 MB in the beginning and 457.2 MB in the end (delta: 127.4 MB). Free memory was 253.8 MB in the beginning and 382.4 MB in the end (delta: -128.6 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 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: SAFE, OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 352 SDslu, 591 SDs, 0 SdLazy, 607 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 768 GetRequests, 632 SyntacticMatches, 14 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred in iteration=7, 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, 0.8s InterpolantComputationTime, 358 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 700 ConstructedInterpolants, 0 QuantifiedInterpolants, 86808 SizeOfPredicates, 68 NumberOfNonLiveVariables, 984 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 correct! Received shutdown request...