/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/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:36:13,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:36:13,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:36:13,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:36:13,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:36:13,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:36:13,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:36:13,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:36:13,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:36:13,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:36:13,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:36:13,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:36:13,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:36:13,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:36:13,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:36:13,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:36:13,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:36:13,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:36:13,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:36:13,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:36:13,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:36:13,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:36:13,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:36:13,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:36:13,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:36:13,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:36:13,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:36:13,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:36:13,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:36:13,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:36:13,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:36:13,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:36:13,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:36:13,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:36:13,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:36:13,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:36:13,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:36:13,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:36:13,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:36:13,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:36:13,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:36:13,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:36:13,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:36:13,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:36:13,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:36:13,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:36:13,908 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:36:13,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:36:13,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:36:13,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:36:13,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:36:13,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:36:13,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:36:13,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:36:13,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:36:13,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:36:13,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:36:13,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:36:13,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:36:13,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:36:13,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:36:13,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:36:13,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:36:13,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:36:13,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:36:13,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:36:13,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:36:13,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:36:13,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:36:13,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:36:13,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:36:13,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:36:14,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:36:14,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:36:14,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:36:14,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:36:14,222 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:36:14,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-10-11 18:36:14,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6084a9c/3d064d71b1774b6080da705b1782dbdc/FLAG715862afa [2020-10-11 18:36:14,851 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:36:14,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-10-11 18:36:14,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6084a9c/3d064d71b1774b6080da705b1782dbdc/FLAG715862afa [2020-10-11 18:36:15,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6084a9c/3d064d71b1774b6080da705b1782dbdc [2020-10-11 18:36:15,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:36:15,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:36:15,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:15,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:36:15,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:36:15,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aef83f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15, skipping insertion in model container [2020-10-11 18:36:15,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:36:15,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:36:15,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:15,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:36:15,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:15,868 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:36:15,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15 WrapperNode [2020-10-11 18:36:15,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:15,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:15,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:36:15,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:36:15,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:15,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:36:15,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:36:15,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:36:15,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... [2020-10-11 18:36:15,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:36:15,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:36:15,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:36:15,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:36:15,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:36:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:36:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:36:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:36:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:36:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:36:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:36:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:36:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:36:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:36:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:36:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:36:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:36:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:36:16,015 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:36:16,393 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:36:16,394 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:36:16,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:16 BoogieIcfgContainer [2020-10-11 18:36:16,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:36:16,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:36:16,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:36:16,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:36:16,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:36:15" (1/3) ... [2020-10-11 18:36:16,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46db9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:16, skipping insertion in model container [2020-10-11 18:36:16,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:15" (2/3) ... [2020-10-11 18:36:16,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46db9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:16, skipping insertion in model container [2020-10-11 18:36:16,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:16" (3/3) ... [2020-10-11 18:36:16,405 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-10-11 18:36:16,416 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:36:16,424 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:36:16,426 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:36:16,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,463 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,463 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,469 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,473 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,473 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,473 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,473 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:16,492 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:36:16,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:36:16,513 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:36:16,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:36:16,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:36:16,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:36:16,513 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:36:16,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:36:16,513 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:36:16,526 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:36:16,570 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:36:16,571 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:16,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:36:16,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:36:16,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:36:16,601 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:36:16,601 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:16,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:16,603 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:16,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-11 18:36:16,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:16,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547995034] [2020-10-11 18:36:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:17,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547995034] [2020-10-11 18:36:17,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:17,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:17,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313099891] [2020-10-11 18:36:17,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:17,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:17,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:17,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:17,379 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:36:17,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:36:17,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:17,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:36:17,383 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:17,561 INFO L129 PetriNetUnfolder]: 11/90 cut-off events. [2020-10-11 18:36:17,561 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:17,562 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 90 events. 11/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 5 based on Foata normal form. 5/93 useless extension candidates. Maximal degree in co-relation 113. Up to 19 conditions per place. [2020-10-11 18:36:17,564 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 7 selfloop transitions, 2 changer transitions 14/68 dead transitions. [2020-10-11 18:36:17,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 189 flow [2020-10-11 18:36:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 557 transitions. [2020-10-11 18:36:17,585 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2020-10-11 18:36:17,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 557 transitions. [2020-10-11 18:36:17,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 557 transitions. [2020-10-11 18:36:17,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:17,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 557 transitions. [2020-10-11 18:36:17,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:17,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:17,606 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:17,609 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 557 transitions. [2020-10-11 18:36:17,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 189 flow [2020-10-11 18:36:17,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:36:17,620 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:36:17,623 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:36:17,624 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:36:17,625 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:36:17,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:17,625 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:17,625 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] [2020-10-11 18:36:17,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:36:17,626 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:17,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1607458751, now seen corresponding path program 1 times [2020-10-11 18:36:17,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673145189] [2020-10-11 18:36:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:17,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673145189] [2020-10-11 18:36:17,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:17,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:17,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936687716] [2020-10-11 18:36:17,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:17,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:17,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:17,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:17,997 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:36:17,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 6 states. [2020-10-11 18:36:17,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:17,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:36:17,998 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:18,111 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:36:18,111 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:36:18,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 69 events. 3/69 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2020-10-11 18:36:18,113 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:36:18,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 208 flow [2020-10-11 18:36:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:36:18,116 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:36:18,116 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:36:18,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:36:18,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:18,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:36:18,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:18,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:18,121 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:18,121 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:36:18,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 208 flow [2020-10-11 18:36:18,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:18,125 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-11 18:36:18,126 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:36:18,127 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:36:18,127 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-11 18:36:18,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:18,127 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:18,127 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] [2020-10-11 18:36:18,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:36:18,128 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:18,128 INFO L82 PathProgramCache]: Analyzing trace with hash -922453822, now seen corresponding path program 1 times [2020-10-11 18:36:18,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:18,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953595475] [2020-10-11 18:36:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:18,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953595475] [2020-10-11 18:36:18,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:18,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:18,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263834091] [2020-10-11 18:36:18,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:18,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:18,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:18,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:18,474 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:36:18,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 7 states. [2020-10-11 18:36:18,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:18,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:36:18,475 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:18,634 INFO L129 PetriNetUnfolder]: 4/75 cut-off events. [2020-10-11 18:36:18,635 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2020-10-11 18:36:18,636 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 75 events. 4/75 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2020-10-11 18:36:18,636 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 6 selfloop transitions, 4 changer transitions 12/66 dead transitions. [2020-10-11 18:36:18,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 233 flow [2020-10-11 18:36:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:36:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:36:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 604 transitions. [2020-10-11 18:36:18,640 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2020-10-11 18:36:18,640 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 604 transitions. [2020-10-11 18:36:18,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 604 transitions. [2020-10-11 18:36:18,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:18,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 604 transitions. [2020-10-11 18:36:18,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:36:18,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:36:18,645 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:36:18,645 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 10 states and 604 transitions. [2020-10-11 18:36:18,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 233 flow [2020-10-11 18:36:18,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 199 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:18,649 INFO L241 Difference]: Finished difference. Result has 80 places, 54 transitions, 152 flow [2020-10-11 18:36:18,650 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2020-10-11 18:36:18,650 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:36:18,650 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 152 flow [2020-10-11 18:36:18,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:18,651 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:18,651 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] [2020-10-11 18:36:18,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:36:18,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:18,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1183801899, now seen corresponding path program 1 times [2020-10-11 18:36:18,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:18,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611526849] [2020-10-11 18:36:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:18,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611526849] [2020-10-11 18:36:18,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:18,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:18,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788974393] [2020-10-11 18:36:18,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:18,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:18,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:18,950 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:36:18,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 152 flow. Second operand 6 states. [2020-10-11 18:36:18,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:18,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:36:18,951 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:19,055 INFO L129 PetriNetUnfolder]: 3/68 cut-off events. [2020-10-11 18:36:19,055 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2020-10-11 18:36:19,056 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 68 events. 3/68 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2020-10-11 18:36:19,056 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:36:19,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 64 transitions, 234 flow [2020-10-11 18:36:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 552 transitions. [2020-10-11 18:36:19,059 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8761904761904762 [2020-10-11 18:36:19,060 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 552 transitions. [2020-10-11 18:36:19,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 552 transitions. [2020-10-11 18:36:19,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:19,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 552 transitions. [2020-10-11 18:36:19,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:19,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:19,064 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:19,064 INFO L185 Difference]: Start difference. First operand has 80 places, 54 transitions, 152 flow. Second operand 9 states and 552 transitions. [2020-10-11 18:36:19,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 64 transitions, 234 flow [2020-10-11 18:36:19,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 188 flow, removed 18 selfloop flow, removed 10 redundant places. [2020-10-11 18:36:19,067 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 146 flow [2020-10-11 18:36:19,068 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-11 18:36:19,068 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:36:19,068 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 146 flow [2020-10-11 18:36:19,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:19,069 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:19,069 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] [2020-10-11 18:36:19,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:36:19,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash -173861203, now seen corresponding path program 1 times [2020-10-11 18:36:19,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:19,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017322446] [2020-10-11 18:36:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:19,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017322446] [2020-10-11 18:36:19,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:19,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:19,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921950784] [2020-10-11 18:36:19,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:19,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:19,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:19,343 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:19,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 146 flow. Second operand 6 states. [2020-10-11 18:36:19,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:19,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:19,344 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:19,492 INFO L129 PetriNetUnfolder]: 91/283 cut-off events. [2020-10-11 18:36:19,492 INFO L130 PetriNetUnfolder]: For 46/49 co-relation queries the response was YES. [2020-10-11 18:36:19,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 283 events. 91/283 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1409 event pairs, 2 based on Foata normal form. 8/287 useless extension candidates. Maximal degree in co-relation 505. Up to 81 conditions per place. [2020-10-11 18:36:19,496 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 6 changer transitions 19/79 dead transitions. [2020-10-11 18:36:19,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 266 flow [2020-10-11 18:36:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2020-10-11 18:36:19,499 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2020-10-11 18:36:19,500 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2020-10-11 18:36:19,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2020-10-11 18:36:19,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:19,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2020-10-11 18:36:19,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:19,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:19,503 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:19,503 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 146 flow. Second operand 9 states and 550 transitions. [2020-10-11 18:36:19,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 266 flow [2020-10-11 18:36:19,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 250 flow, removed 6 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:19,508 INFO L241 Difference]: Finished difference. Result has 79 places, 57 transitions, 186 flow [2020-10-11 18:36:19,508 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2020-10-11 18:36:19,509 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:36:19,509 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 186 flow [2020-10-11 18:36:19,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:19,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:19,509 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] [2020-10-11 18:36:19,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:36:19,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1360421556, now seen corresponding path program 1 times [2020-10-11 18:36:19,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:19,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508310183] [2020-10-11 18:36:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:19,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508310183] [2020-10-11 18:36:19,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:19,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:19,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306085321] [2020-10-11 18:36:19,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:19,697 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:19,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 186 flow. Second operand 7 states. [2020-10-11 18:36:19,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:19,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:19,698 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:19,892 INFO L129 PetriNetUnfolder]: 52/187 cut-off events. [2020-10-11 18:36:19,893 INFO L130 PetriNetUnfolder]: For 291/301 co-relation queries the response was YES. [2020-10-11 18:36:19,894 INFO L80 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 187 events. 52/187 cut-off events. For 291/301 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 736 event pairs, 0 based on Foata normal form. 12/198 useless extension candidates. Maximal degree in co-relation 550. Up to 75 conditions per place. [2020-10-11 18:36:19,895 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 19/82 dead transitions. [2020-10-11 18:36:19,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 439 flow [2020-10-11 18:36:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:36:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:36:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2020-10-11 18:36:19,898 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2020-10-11 18:36:19,899 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2020-10-11 18:36:19,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2020-10-11 18:36:19,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:19,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2020-10-11 18:36:19,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:36:19,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:36:19,902 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:36:19,903 INFO L185 Difference]: Start difference. First operand has 79 places, 57 transitions, 186 flow. Second operand 10 states and 610 transitions. [2020-10-11 18:36:19,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 439 flow [2020-10-11 18:36:19,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 415 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:36:19,908 INFO L241 Difference]: Finished difference. Result has 85 places, 60 transitions, 254 flow [2020-10-11 18:36:19,908 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=254, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2020-10-11 18:36:19,908 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-11 18:36:19,908 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 254 flow [2020-10-11 18:36:19,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:19,909 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:19,909 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] [2020-10-11 18:36:19,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:36:19,909 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1872738817, now seen corresponding path program 1 times [2020-10-11 18:36:19,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:19,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017995506] [2020-10-11 18:36:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:20,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017995506] [2020-10-11 18:36:20,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:20,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:20,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001057391] [2020-10-11 18:36:20,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:20,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:20,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:20,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:20,236 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:20,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 254 flow. Second operand 7 states. [2020-10-11 18:36:20,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:20,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:20,237 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:20,348 INFO L129 PetriNetUnfolder]: 30/214 cut-off events. [2020-10-11 18:36:20,349 INFO L130 PetriNetUnfolder]: For 526/564 co-relation queries the response was YES. [2020-10-11 18:36:20,350 INFO L80 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 214 events. 30/214 cut-off events. For 526/564 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 960 event pairs, 6 based on Foata normal form. 9/217 useless extension candidates. Maximal degree in co-relation 614. Up to 56 conditions per place. [2020-10-11 18:36:20,351 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 8 selfloop transitions, 4 changer transitions 5/66 dead transitions. [2020-10-11 18:36:20,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 66 transitions, 307 flow [2020-10-11 18:36:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-11 18:36:20,354 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-11 18:36:20,354 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-11 18:36:20,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-11 18:36:20,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:20,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-11 18:36:20,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:20,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:20,357 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:20,357 INFO L185 Difference]: Start difference. First operand has 85 places, 60 transitions, 254 flow. Second operand 7 states and 417 transitions. [2020-10-11 18:36:20,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 66 transitions, 307 flow [2020-10-11 18:36:20,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 251 flow, removed 20 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:20,361 INFO L241 Difference]: Finished difference. Result has 82 places, 60 transitions, 218 flow [2020-10-11 18:36:20,362 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2020-10-11 18:36:20,362 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2020-10-11 18:36:20,362 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 218 flow [2020-10-11 18:36:20,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:20,363 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:20,363 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] [2020-10-11 18:36:20,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:36:20,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash -894102075, now seen corresponding path program 2 times [2020-10-11 18:36:20,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:20,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153461838] [2020-10-11 18:36:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153461838] [2020-10-11 18:36:20,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:20,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:36:20,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294849690] [2020-10-11 18:36:20,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:36:20,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:36:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:36:20,552 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:20,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 218 flow. Second operand 8 states. [2020-10-11 18:36:20,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:20,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:20,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:20,740 INFO L129 PetriNetUnfolder]: 16/100 cut-off events. [2020-10-11 18:36:20,740 INFO L130 PetriNetUnfolder]: For 152/168 co-relation queries the response was YES. [2020-10-11 18:36:20,741 INFO L80 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 100 events. 16/100 cut-off events. For 152/168 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 0 based on Foata normal form. 12/111 useless extension candidates. Maximal degree in co-relation 262. Up to 27 conditions per place. [2020-10-11 18:36:20,741 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-11 18:36:20,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 363 flow [2020-10-11 18:36:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:36:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:36:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-11 18:36:20,745 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-11 18:36:20,746 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-11 18:36:20,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-11 18:36:20,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:20,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-11 18:36:20,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:36:20,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:36:20,750 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:36:20,750 INFO L185 Difference]: Start difference. First operand has 82 places, 60 transitions, 218 flow. Second operand 11 states and 658 transitions. [2020-10-11 18:36:20,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 363 flow [2020-10-11 18:36:20,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 317 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:20,754 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 230 flow [2020-10-11 18:36:20,754 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=230, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2020-10-11 18:36:20,754 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-11 18:36:20,755 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 230 flow [2020-10-11 18:36:20,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:36:20,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:20,755 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] [2020-10-11 18:36:20,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:36:20,755 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:20,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1530297956, now seen corresponding path program 1 times [2020-10-11 18:36:20,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:20,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833323747] [2020-10-11 18:36:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:20,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833323747] [2020-10-11 18:36:20,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:20,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:20,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376735046] [2020-10-11 18:36:20,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:20,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:20,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:20,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:21,096 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:21,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 230 flow. Second operand 7 states. [2020-10-11 18:36:21,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:21,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:21,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:21,219 INFO L129 PetriNetUnfolder]: 10/105 cut-off events. [2020-10-11 18:36:21,220 INFO L130 PetriNetUnfolder]: For 98/103 co-relation queries the response was YES. [2020-10-11 18:36:21,220 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 105 events. 10/105 cut-off events. For 98/103 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 0 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 214. Up to 21 conditions per place. [2020-10-11 18:36:21,221 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 10 selfloop transitions, 1 changer transitions 5/65 dead transitions. [2020-10-11 18:36:21,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 65 transitions, 272 flow [2020-10-11 18:36:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:36:21,223 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:36:21,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:36:21,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:36:21,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:21,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:36:21,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:21,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:21,226 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:21,226 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 230 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:36:21,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 65 transitions, 272 flow [2020-10-11 18:36:21,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 196 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-11 18:36:21,229 INFO L241 Difference]: Finished difference. Result has 78 places, 60 transitions, 167 flow [2020-10-11 18:36:21,229 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2020-10-11 18:36:21,229 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:36:21,230 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 167 flow [2020-10-11 18:36:21,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:21,230 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:21,230 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] [2020-10-11 18:36:21,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:36:21,230 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:21,231 INFO L82 PathProgramCache]: Analyzing trace with hash -396943510, now seen corresponding path program 2 times [2020-10-11 18:36:21,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:21,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604478917] [2020-10-11 18:36:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:21,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604478917] [2020-10-11 18:36:21,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:21,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:21,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401164737] [2020-10-11 18:36:21,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:21,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:21,537 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:36:21,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 167 flow. Second operand 7 states. [2020-10-11 18:36:21,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:21,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:36:21,538 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:21,615 INFO L129 PetriNetUnfolder]: 7/91 cut-off events. [2020-10-11 18:36:21,615 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2020-10-11 18:36:21,616 INFO L80 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 91 events. 7/91 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 192 event pairs, 0 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 142. Up to 10 conditions per place. [2020-10-11 18:36:21,616 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-11 18:36:21,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 193 flow [2020-10-11 18:36:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:36:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:36:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2020-10-11 18:36:21,618 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8375 [2020-10-11 18:36:21,619 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 469 transitions. [2020-10-11 18:36:21,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 469 transitions. [2020-10-11 18:36:21,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:21,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 469 transitions. [2020-10-11 18:36:21,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:36:21,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:36:21,622 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:36:21,622 INFO L185 Difference]: Start difference. First operand has 78 places, 60 transitions, 167 flow. Second operand 8 states and 469 transitions. [2020-10-11 18:36:21,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 193 flow [2020-10-11 18:36:21,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 185 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:36:21,624 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:36:21,625 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:36:21,625 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:36:21,626 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:36:21,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:21,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:36:21,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:36:21 BasicIcfg [2020-10-11 18:36:21,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:36:21,642 INFO L168 Benchmark]: Toolchain (without parser) took 6498.22 ms. Allocated memory was 248.5 MB in the beginning and 427.3 MB in the end (delta: 178.8 MB). Free memory was 203.2 MB in the beginning and 331.0 MB in the end (delta: -127.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:21,643 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:36:21,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.70 ms. Allocated memory was 248.5 MB in the beginning and 306.7 MB in the end (delta: 58.2 MB). Free memory was 203.2 MB in the beginning and 261.8 MB in the end (delta: -58.5 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:21,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 306.7 MB. Free memory was 261.8 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:21,645 INFO L168 Benchmark]: Boogie Preprocessor took 26.11 ms. Allocated memory is still 306.7 MB. Free memory was 259.2 MB in the beginning and 256.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:21,649 INFO L168 Benchmark]: RCFGBuilder took 450.05 ms. Allocated memory is still 306.7 MB. Free memory was 256.7 MB in the beginning and 234.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:21,650 INFO L168 Benchmark]: TraceAbstraction took 5235.15 ms. Allocated memory was 306.7 MB in the beginning and 427.3 MB in the end (delta: 120.6 MB). Free memory was 234.9 MB in the beginning and 331.0 MB in the end (delta: -96.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:21,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 731.70 ms. Allocated memory was 248.5 MB in the beginning and 306.7 MB in the end (delta: 58.2 MB). Free memory was 203.2 MB in the beginning and 261.8 MB in the end (delta: -58.5 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 306.7 MB. Free memory was 261.8 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.11 ms. Allocated memory is still 306.7 MB. Free memory was 259.2 MB in the beginning and 256.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 450.05 ms. Allocated memory is still 306.7 MB. Free memory was 256.7 MB in the beginning and 234.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5235.15 ms. Allocated memory was 306.7 MB in the beginning and 427.3 MB in the end (delta: 120.6 MB). Free memory was 234.9 MB in the beginning and 331.0 MB in the end (delta: -96.1 MB). Peak memory consumption was 24.5 MB. 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 4 procedures, 69 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: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 277 SDslu, 716 SDs, 0 SdLazy, 706 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=6, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 50738 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...