/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-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 17:23:11,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 17:23:11,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 17:23:12,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 17:23:12,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 17:23:12,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 17:23:12,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 17:23:12,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 17:23:12,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 17:23:12,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 17:23:12,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 17:23:12,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 17:23:12,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 17:23:12,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 17:23:12,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 17:23:12,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 17:23:12,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 17:23:12,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 17:23:12,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 17:23:12,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 17:23:12,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 17:23:12,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 17:23:12,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 17:23:12,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 17:23:12,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 17:23:12,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 17:23:12,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 17:23:12,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 17:23:12,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 17:23:12,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 17:23:12,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 17:23:12,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 17:23:12,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 17:23:12,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 17:23:12,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 17:23:12,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 17:23:12,099 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 17:23:12,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 17:23:12,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 17:23:12,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 17:23:12,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 17:23:12,140 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 17:23:12,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 17:23:12,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 17:23:12,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 17:23:12,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 17:23:12,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 17:23:12,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 17:23:12,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 17:23:12,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 17:23:12,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 17:23:12,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 17:23:12,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 17:23:12,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 17:23:12,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 17:23:12,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 17:23:12,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 17:23:12,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 17:23:12,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 17:23:12,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 17:23:12,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 17:23:12,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 17:23:12,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 17:23:12,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 17:23:12,146 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 17:23:12,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 17:23:12,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 17:23:12,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 17:23:12,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 17:23:12,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 17:23:12,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 17:23:12,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 17:23:12,456 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-11 17:23:12,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee32e31bd/6f7d8b684095455dad5160f39494a57a/FLAG6120d3810 [2020-10-11 17:23:13,057 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 17:23:13,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-11 17:23:13,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee32e31bd/6f7d8b684095455dad5160f39494a57a/FLAG6120d3810 [2020-10-11 17:23:13,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee32e31bd/6f7d8b684095455dad5160f39494a57a [2020-10-11 17:23:13,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 17:23:13,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 17:23:13,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 17:23:13,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 17:23:13,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 17:23:13,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:23:13" (1/1) ... [2020-10-11 17:23:13,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b525af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:13, skipping insertion in model container [2020-10-11 17:23:13,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:23:13" (1/1) ... [2020-10-11 17:23:13,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 17:23:13,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 17:23:13,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 17:23:13,901 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 17:23:13,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 17:23:14,019 INFO L208 MainTranslator]: Completed translation [2020-10-11 17:23:14,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14 WrapperNode [2020-10-11 17:23:14,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 17:23:14,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 17:23:14,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 17:23:14,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 17:23:14,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 17:23:14,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 17:23:14,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 17:23:14,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 17:23:14,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (1/1) ... [2020-10-11 17:23:14,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 17:23:14,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 17:23:14,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 17:23:14,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 17:23:14,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (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 17:23:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 17:23:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 17:23:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 17:23:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 17:23:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 17:23:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 17:23:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 17:23:14,167 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 17:23:14,579 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 17:23:14,579 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-11 17:23:14,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:23:14 BoogieIcfgContainer [2020-10-11 17:23:14,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 17:23:14,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 17:23:14,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 17:23:14,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 17:23:14,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:23:13" (1/3) ... [2020-10-11 17:23:14,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b33d82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:23:14, skipping insertion in model container [2020-10-11 17:23:14,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:14" (2/3) ... [2020-10-11 17:23:14,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b33d82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:23:14, skipping insertion in model container [2020-10-11 17:23:14,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:23:14" (3/3) ... [2020-10-11 17:23:14,589 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-10-11 17:23:14,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 17:23:14,605 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 17:23:14,606 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 17:23:14,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:14,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 17:23:14,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 17:23:14,669 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 17:23:14,670 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 17:23:14,670 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 17:23:14,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 17:23:14,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 17:23:14,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 17:23:14,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 17:23:14,683 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-10-11 17:23:14,722 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-10-11 17:23:14,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:14,729 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-11 17:23:14,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 82 transitions, 169 flow [2020-10-11 17:23:14,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 81 transitions, 165 flow [2020-10-11 17:23:14,754 INFO L129 PetriNetUnfolder]: 19/65 cut-off events. [2020-10-11 17:23:14,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:14,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:14,756 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] [2020-10-11 17:23:14,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:14,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1601843613, now seen corresponding path program 1 times [2020-10-11 17:23:14,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:14,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626281966] [2020-10-11 17:23:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:14,947 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 17:23:14,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626281966] [2020-10-11 17:23:14,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:14,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 17:23:14,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590145263] [2020-10-11 17:23:14,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 17:23:14,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:14,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 17:23:14,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 17:23:14,978 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2020-10-11 17:23:14,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 81 transitions, 165 flow. Second operand 2 states. [2020-10-11 17:23:14,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:14,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2020-10-11 17:23:14,985 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:15,008 INFO L129 PetriNetUnfolder]: 12/57 cut-off events. [2020-10-11 17:23:15,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:15,009 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 57 events. 12/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 12/57 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-11 17:23:15,011 INFO L132 encePairwiseOnDemand]: 68/82 looper letters, 0 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2020-10-11 17:23:15,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 117 flow [2020-10-11 17:23:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 17:23:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-11 17:23:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2020-10-11 17:23:15,027 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9146341463414634 [2020-10-11 17:23:15,027 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 150 transitions. [2020-10-11 17:23:15,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 150 transitions. [2020-10-11 17:23:15,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:15,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 150 transitions. [2020-10-11 17:23:15,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-11 17:23:15,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-11 17:23:15,041 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-11 17:23:15,044 INFO L185 Difference]: Start difference. First operand has 61 places, 81 transitions, 165 flow. Second operand 2 states and 150 transitions. [2020-10-11 17:23:15,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 117 flow [2020-10-11 17:23:15,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 17:23:15,053 INFO L241 Difference]: Finished difference. Result has 49 places, 57 transitions, 116 flow [2020-10-11 17:23:15,056 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=57} [2020-10-11 17:23:15,057 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -12 predicate places. [2020-10-11 17:23:15,057 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 57 transitions, 116 flow [2020-10-11 17:23:15,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 17:23:15,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:15,058 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] [2020-10-11 17:23:15,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 17:23:15,059 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:15,059 INFO L82 PathProgramCache]: Analyzing trace with hash -950283557, now seen corresponding path program 1 times [2020-10-11 17:23:15,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:15,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815524710] [2020-10-11 17:23:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:15,157 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 17:23:15,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815524710] [2020-10-11 17:23:15,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:15,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:15,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297015301] [2020-10-11 17:23:15,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:15,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:15,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:15,210 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2020-10-11 17:23:15,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 57 transitions, 116 flow. Second operand 3 states. [2020-10-11 17:23:15,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:15,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2020-10-11 17:23:15,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:15,248 INFO L129 PetriNetUnfolder]: 37/135 cut-off events. [2020-10-11 17:23:15,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:15,250 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 135 events. 37/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 275 event pairs, 1 based on Foata normal form. 4/108 useless extension candidates. Maximal degree in co-relation 154. Up to 12 conditions per place. [2020-10-11 17:23:15,252 INFO L132 encePairwiseOnDemand]: 77/82 looper letters, 4 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2020-10-11 17:23:15,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 134 flow [2020-10-11 17:23:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2020-10-11 17:23:15,256 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8048780487804879 [2020-10-11 17:23:15,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2020-10-11 17:23:15,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2020-10-11 17:23:15,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:15,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2020-10-11 17:23:15,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:15,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:15,261 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:15,261 INFO L185 Difference]: Start difference. First operand has 49 places, 57 transitions, 116 flow. Second operand 3 states and 198 transitions. [2020-10-11 17:23:15,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 134 flow [2020-10-11 17:23:15,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-11 17:23:15,266 INFO L241 Difference]: Finished difference. Result has 53 places, 59 transitions, 140 flow [2020-10-11 17:23:15,267 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2020-10-11 17:23:15,268 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2020-10-11 17:23:15,268 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 140 flow [2020-10-11 17:23:15,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:15,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:15,268 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] [2020-10-11 17:23:15,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 17:23:15,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:15,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:15,270 INFO L82 PathProgramCache]: Analyzing trace with hash -260491045, now seen corresponding path program 1 times [2020-10-11 17:23:15,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:15,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150744051] [2020-10-11 17:23:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:15,371 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 17:23:15,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150744051] [2020-10-11 17:23:15,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:15,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:15,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205593477] [2020-10-11 17:23:15,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:15,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:15,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:15,418 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2020-10-11 17:23:15,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 140 flow. Second operand 3 states. [2020-10-11 17:23:15,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:15,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2020-10-11 17:23:15,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:15,454 INFO L129 PetriNetUnfolder]: 46/157 cut-off events. [2020-10-11 17:23:15,455 INFO L130 PetriNetUnfolder]: For 29/34 co-relation queries the response was YES. [2020-10-11 17:23:15,456 INFO L80 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 157 events. 46/157 cut-off events. For 29/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 384 event pairs, 2 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 211. Up to 16 conditions per place. [2020-10-11 17:23:15,458 INFO L132 encePairwiseOnDemand]: 78/82 looper letters, 5 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2020-10-11 17:23:15,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 154 flow [2020-10-11 17:23:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2020-10-11 17:23:15,463 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8048780487804879 [2020-10-11 17:23:15,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2020-10-11 17:23:15,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2020-10-11 17:23:15,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:15,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2020-10-11 17:23:15,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:15,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:15,468 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:15,468 INFO L185 Difference]: Start difference. First operand has 53 places, 59 transitions, 140 flow. Second operand 3 states and 198 transitions. [2020-10-11 17:23:15,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 154 flow [2020-10-11 17:23:15,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:15,473 INFO L241 Difference]: Finished difference. Result has 54 places, 59 transitions, 144 flow [2020-10-11 17:23:15,474 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2020-10-11 17:23:15,474 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2020-10-11 17:23:15,474 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 144 flow [2020-10-11 17:23:15,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:15,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:15,475 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:15,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 17:23:15,477 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:15,477 INFO L82 PathProgramCache]: Analyzing trace with hash -609098235, now seen corresponding path program 1 times [2020-10-11 17:23:15,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:15,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983768512] [2020-10-11 17:23:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:15,598 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 17:23:15,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983768512] [2020-10-11 17:23:15,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:15,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:15,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966411265] [2020-10-11 17:23:15,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:15,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:15,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:15,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:15,753 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 82 [2020-10-11 17:23:15,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 144 flow. Second operand 3 states. [2020-10-11 17:23:15,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:15,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 82 [2020-10-11 17:23:15,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:15,818 INFO L129 PetriNetUnfolder]: 130/353 cut-off events. [2020-10-11 17:23:15,819 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2020-10-11 17:23:15,822 INFO L80 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 353 events. 130/353 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1312 event pairs, 23 based on Foata normal form. 25/333 useless extension candidates. Maximal degree in co-relation 544. Up to 101 conditions per place. [2020-10-11 17:23:15,825 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 11 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2020-10-11 17:23:15,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 188 flow [2020-10-11 17:23:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2020-10-11 17:23:15,828 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2020-10-11 17:23:15,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2020-10-11 17:23:15,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2020-10-11 17:23:15,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:15,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2020-10-11 17:23:15,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:15,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:15,831 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:15,831 INFO L185 Difference]: Start difference. First operand has 54 places, 59 transitions, 144 flow. Second operand 3 states and 190 transitions. [2020-10-11 17:23:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 188 flow [2020-10-11 17:23:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 17:23:15,836 INFO L241 Difference]: Finished difference. Result has 57 places, 64 transitions, 196 flow [2020-10-11 17:23:15,836 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2020-10-11 17:23:15,837 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2020-10-11 17:23:15,837 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 196 flow [2020-10-11 17:23:15,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:15,837 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:15,837 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:15,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 17:23:15,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash -777005627, now seen corresponding path program 2 times [2020-10-11 17:23:15,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:15,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556148199] [2020-10-11 17:23:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:15,910 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 17:23:15,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556148199] [2020-10-11 17:23:15,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:15,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289988078] [2020-10-11 17:23:15,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:15,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:15,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:15,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:16,000 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 82 [2020-10-11 17:23:16,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 196 flow. Second operand 3 states. [2020-10-11 17:23:16,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:16,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 82 [2020-10-11 17:23:16,001 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:16,085 INFO L129 PetriNetUnfolder]: 177/451 cut-off events. [2020-10-11 17:23:16,086 INFO L130 PetriNetUnfolder]: For 200/213 co-relation queries the response was YES. [2020-10-11 17:23:16,088 INFO L80 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 451 events. 177/451 cut-off events. For 200/213 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1856 event pairs, 18 based on Foata normal form. 17/410 useless extension candidates. Maximal degree in co-relation 908. Up to 112 conditions per place. [2020-10-11 17:23:16,094 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 12 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2020-10-11 17:23:16,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 260 flow [2020-10-11 17:23:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2020-10-11 17:23:16,100 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2020-10-11 17:23:16,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2020-10-11 17:23:16,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2020-10-11 17:23:16,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:16,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2020-10-11 17:23:16,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:16,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:16,105 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:16,105 INFO L185 Difference]: Start difference. First operand has 57 places, 64 transitions, 196 flow. Second operand 3 states and 190 transitions. [2020-10-11 17:23:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 260 flow [2020-10-11 17:23:16,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:16,118 INFO L241 Difference]: Finished difference. Result has 59 places, 69 transitions, 254 flow [2020-10-11 17:23:16,118 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=59, PETRI_TRANSITIONS=69} [2020-10-11 17:23:16,118 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2020-10-11 17:23:16,119 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 254 flow [2020-10-11 17:23:16,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:16,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:16,119 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:16,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 17:23:16,120 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:16,121 INFO L82 PathProgramCache]: Analyzing trace with hash 642512791, now seen corresponding path program 3 times [2020-10-11 17:23:16,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:16,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153373214] [2020-10-11 17:23:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:16,182 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 17:23:16,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153373214] [2020-10-11 17:23:16,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:16,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:16,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016504484] [2020-10-11 17:23:16,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:16,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:16,256 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 82 [2020-10-11 17:23:16,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 254 flow. Second operand 3 states. [2020-10-11 17:23:16,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:16,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 82 [2020-10-11 17:23:16,257 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:16,307 INFO L129 PetriNetUnfolder]: 191/458 cut-off events. [2020-10-11 17:23:16,307 INFO L130 PetriNetUnfolder]: For 543/577 co-relation queries the response was YES. [2020-10-11 17:23:16,310 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 458 events. 191/458 cut-off events. For 543/577 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1853 event pairs, 27 based on Foata normal form. 23/418 useless extension candidates. Maximal degree in co-relation 1132. Up to 158 conditions per place. [2020-10-11 17:23:16,313 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 17 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2020-10-11 17:23:16,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 310 flow [2020-10-11 17:23:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2020-10-11 17:23:16,315 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2020-10-11 17:23:16,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2020-10-11 17:23:16,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2020-10-11 17:23:16,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:16,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2020-10-11 17:23:16,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:16,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:16,317 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:16,318 INFO L185 Difference]: Start difference. First operand has 59 places, 69 transitions, 254 flow. Second operand 3 states and 188 transitions. [2020-10-11 17:23:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 310 flow [2020-10-11 17:23:16,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:16,322 INFO L241 Difference]: Finished difference. Result has 61 places, 70 transitions, 284 flow [2020-10-11 17:23:16,323 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2020-10-11 17:23:16,323 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2020-10-11 17:23:16,323 INFO L481 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 284 flow [2020-10-11 17:23:16,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:16,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:16,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:16,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 17:23:16,324 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:16,324 INFO L82 PathProgramCache]: Analyzing trace with hash 426758021, now seen corresponding path program 4 times [2020-10-11 17:23:16,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:16,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457157715] [2020-10-11 17:23:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:16,356 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 17:23:16,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457157715] [2020-10-11 17:23:16,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:16,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:16,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905137514] [2020-10-11 17:23:16,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:16,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:16,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:16,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:16,439 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 82 [2020-10-11 17:23:16,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 284 flow. Second operand 3 states. [2020-10-11 17:23:16,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:16,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 82 [2020-10-11 17:23:16,440 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:16,516 INFO L129 PetriNetUnfolder]: 290/603 cut-off events. [2020-10-11 17:23:16,516 INFO L130 PetriNetUnfolder]: For 396/445 co-relation queries the response was YES. [2020-10-11 17:23:16,520 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 603 events. 290/603 cut-off events. For 396/445 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2453 event pairs, 35 based on Foata normal form. 34/581 useless extension candidates. Maximal degree in co-relation 1435. Up to 151 conditions per place. [2020-10-11 17:23:16,521 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2020-10-11 17:23:16,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 316 flow [2020-10-11 17:23:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2020-10-11 17:23:16,524 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2020-10-11 17:23:16,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2020-10-11 17:23:16,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2020-10-11 17:23:16,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:16,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2020-10-11 17:23:16,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:16,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:16,527 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:16,527 INFO L185 Difference]: Start difference. First operand has 61 places, 70 transitions, 284 flow. Second operand 3 states and 190 transitions. [2020-10-11 17:23:16,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 316 flow [2020-10-11 17:23:16,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 300 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:16,532 INFO L241 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2020-10-11 17:23:16,532 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2020-10-11 17:23:16,532 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2020-10-11 17:23:16,533 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2020-10-11 17:23:16,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:16,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 17:23:16,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 05:23:16 BasicIcfg [2020-10-11 17:23:16,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 17:23:16,544 INFO L168 Benchmark]: Toolchain (without parser) took 3185.47 ms. Allocated memory was 252.7 MB in the beginning and 361.2 MB in the end (delta: 108.5 MB). Free memory was 208.5 MB in the beginning and 200.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 116.2 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,545 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.33 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 208.5 MB in the beginning and 274.9 MB in the end (delta: -66.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.14 ms. Allocated memory is still 318.2 MB. Free memory was 274.9 MB in the beginning and 273.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,548 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 318.2 MB. Free memory was 273.2 MB in the beginning and 271.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,549 INFO L168 Benchmark]: RCFGBuilder took 480.71 ms. Allocated memory is still 318.2 MB. Free memory was 271.5 MB in the beginning and 249.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,550 INFO L168 Benchmark]: TraceAbstraction took 1958.94 ms. Allocated memory was 318.2 MB in the beginning and 361.2 MB in the end (delta: 43.0 MB). Free memory was 248.6 MB in the beginning and 200.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 90.7 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:16,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 659.33 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 208.5 MB in the beginning and 274.9 MB in the end (delta: -66.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.14 ms. Allocated memory is still 318.2 MB. Free memory was 274.9 MB in the beginning and 273.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 318.2 MB. Free memory was 273.2 MB in the beginning and 271.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 480.71 ms. Allocated memory is still 318.2 MB. Free memory was 271.5 MB in the beginning and 249.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1958.94 ms. Allocated memory was 318.2 MB in the beginning and 361.2 MB in the end (delta: 43.0 MB). Free memory was 248.6 MB in the beginning and 200.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 90.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 2 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: 1.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 44 SDslu, 0 SDs, 0 SdLazy, 108 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 7923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...