/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 06:00:48,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 06:00:48,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 06:00:48,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 06:00:48,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 06:00:48,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 06:00:48,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 06:00:48,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 06:00:48,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 06:00:48,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 06:00:48,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 06:00:48,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 06:00:48,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 06:00:48,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 06:00:48,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 06:00:48,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 06:00:48,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 06:00:48,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 06:00:48,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 06:00:48,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 06:00:48,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 06:00:48,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 06:00:48,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 06:00:48,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 06:00:48,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 06:00:48,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 06:00:48,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 06:00:48,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 06:00:48,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 06:00:48,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 06:00:48,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 06:00:48,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 06:00:48,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 06:00:48,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 06:00:48,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 06:00:48,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 06:00:48,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 06:00:48,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 06:00:48,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 06:00:48,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 06:00:48,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 06:00:48,769 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 06:00:48,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 06:00:48,769 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 06:00:48,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 06:00:48,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 06:00:48,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 06:00:48,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 06:00:48,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 06:00:48,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 06:00:48,770 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 06:00:48,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:00:48,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 06:00:48,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 06:00:48,772 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 06:00:49,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 06:00:49,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 06:00:49,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 06:00:49,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 06:00:49,025 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 06:00:49,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-08-13 06:00:49,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f201eadd7/3bac5013941648749c666b9e80536d97/FLAGa4185d652 [2021-08-13 06:00:49,580 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 06:00:49,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-08-13 06:00:49,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f201eadd7/3bac5013941648749c666b9e80536d97/FLAGa4185d652 [2021-08-13 06:00:50,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f201eadd7/3bac5013941648749c666b9e80536d97 [2021-08-13 06:00:50,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 06:00:50,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 06:00:50,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 06:00:50,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 06:00:50,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 06:00:50,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e627f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50, skipping insertion in model container [2021-08-13 06:00:50,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 06:00:50,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 06:00:50,193 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i[949,962] [2021-08-13 06:00:50,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:00:50,320 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 06:00:50,330 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i[949,962] [2021-08-13 06:00:50,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:00:50,417 INFO L208 MainTranslator]: Completed translation [2021-08-13 06:00:50,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50 WrapperNode [2021-08-13 06:00:50,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 06:00:50,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 06:00:50,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 06:00:50,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 06:00:50,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 06:00:50,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 06:00:50,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 06:00:50,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 06:00:50,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... [2021-08-13 06:00:50,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 06:00:50,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 06:00:50,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 06:00:50,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 06:00:50,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:00:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 06:00:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 06:00:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 06:00:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 06:00:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 06:00:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 06:00:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 06:00:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 06:00:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 06:00:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 06:00:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 06:00:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 06:00:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 06:00:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 06:00:50,618 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 06:00:51,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 06:00:51,001 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 06:00:51,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:00:51 BoogieIcfgContainer [2021-08-13 06:00:51,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 06:00:51,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 06:00:51,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 06:00:51,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 06:00:51,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 06:00:50" (1/3) ... [2021-08-13 06:00:51,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35274d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:00:51, skipping insertion in model container [2021-08-13 06:00:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:00:50" (2/3) ... [2021-08-13 06:00:51,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35274d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:00:51, skipping insertion in model container [2021-08-13 06:00:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:00:51" (3/3) ... [2021-08-13 06:00:51,007 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2021-08-13 06:00:51,010 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 06:00:51,010 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 06:00:51,011 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,036 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,038 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,038 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,043 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,043 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,043 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,043 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,044 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,054 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,054 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:00:51,057 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 06:00:51,073 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 06:00:51,097 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 06:00:51,097 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 06:00:51,097 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 06:00:51,097 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 06:00:51,097 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 06:00:51,097 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 06:00:51,097 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 06:00:51,098 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 06:00:51,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 06:00:51,154 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-13 06:00:51,154 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:00:51,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 06:00:51,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 06:00:51,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-08-13 06:00:51,195 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-08-13 06:00:51,195 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:00:51,195 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:51,196 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:51,196 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1924556435, now seen corresponding path program 1 times [2021-08-13 06:00:51,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:51,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077909185] [2021-08-13 06:00:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:51,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:51,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:51,493 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:00:51,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:00:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:51,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:51,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:51,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:51,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077909185] [2021-08-13 06:00:51,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077909185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:51,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:51,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:00:51,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515598912] [2021-08-13 06:00:51,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:00:51,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:51,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:00:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:00:51,561 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-08-13 06:00:51,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:51,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:51,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-08-13 06:00:51,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:51,696 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2021-08-13 06:00:51,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:00:51,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 82 events. 3/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 4/85 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-08-13 06:00:51,698 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 6 selfloop transitions, 2 changer transitions 11/77 dead transitions. [2021-08-13 06:00:51,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 199 flow [2021-08-13 06:00:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:00:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:00:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 661 transitions. [2021-08-13 06:00:51,718 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8848728246318608 [2021-08-13 06:00:51,718 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 661 transitions. [2021-08-13 06:00:51,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 661 transitions. [2021-08-13 06:00:51,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:51,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 661 transitions. [2021-08-13 06:00:51,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.44444444444444) internal successors, (661), 9 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:51,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:51,738 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:51,738 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2021-08-13 06:00:51,739 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 199 flow [2021-08-13 06:00:51,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:51,739 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:51,740 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:51,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 06:00:51,740 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:51,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1190945394, now seen corresponding path program 1 times [2021-08-13 06:00:51,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:51,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950987825] [2021-08-13 06:00:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:51,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:51,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:51,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:51,874 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:00:51,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:00:51,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:51,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:51,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:51,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:51,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:51,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950987825] [2021-08-13 06:00:51,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950987825] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:51,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:51,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:00:51,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911818307] [2021-08-13 06:00:51,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:00:51,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:00:51,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:00:51,915 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 06:00:51,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:51,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:51,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 06:00:51,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:52,132 INFO L129 PetriNetUnfolder]: 17/154 cut-off events. [2021-08-13 06:00:52,133 INFO L130 PetriNetUnfolder]: For 12/22 co-relation queries the response was YES. [2021-08-13 06:00:52,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 154 events. 17/154 cut-off events. For 12/22 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 516 event pairs, 0 based on Foata normal form. 3/155 useless extension candidates. Maximal degree in co-relation 230. Up to 16 conditions per place. [2021-08-13 06:00:52,134 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 6 selfloop transitions, 4 changer transitions 36/102 dead transitions. [2021-08-13 06:00:52,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 102 transitions, 383 flow [2021-08-13 06:00:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:00:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:00:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 930 transitions. [2021-08-13 06:00:52,137 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8619091751621872 [2021-08-13 06:00:52,137 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 930 transitions. [2021-08-13 06:00:52,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 930 transitions. [2021-08-13 06:00:52,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:52,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 930 transitions. [2021-08-13 06:00:52,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.53846153846153) internal successors, (930), 13 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,142 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,144 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2021-08-13 06:00:52,144 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 102 transitions, 383 flow [2021-08-13 06:00:52,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,144 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:52,144 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:52,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 06:00:52,144 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:52,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:52,145 INFO L82 PathProgramCache]: Analyzing trace with hash -200732444, now seen corresponding path program 1 times [2021-08-13 06:00:52,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:52,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127966696] [2021-08-13 06:00:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:52,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:52,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:52,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:52,237 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:00:52,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:00:52,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:52,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:52,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:52,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:52,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127966696] [2021-08-13 06:00:52,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127966696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:52,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:52,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:00:52,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540607550] [2021-08-13 06:00:52,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:00:52,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:52,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:00:52,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:00:52,271 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2021-08-13 06:00:52,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 102 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:52,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2021-08-13 06:00:52,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:52,470 INFO L129 PetriNetUnfolder]: 298/732 cut-off events. [2021-08-13 06:00:52,470 INFO L130 PetriNetUnfolder]: For 254/437 co-relation queries the response was YES. [2021-08-13 06:00:52,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 732 events. 298/732 cut-off events. For 254/437 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4499 event pairs, 15 based on Foata normal form. 4/715 useless extension candidates. Maximal degree in co-relation 1776. Up to 110 conditions per place. [2021-08-13 06:00:52,475 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 7 selfloop transitions, 4 changer transitions 136/202 dead transitions. [2021-08-13 06:00:52,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 202 transitions, 1171 flow [2021-08-13 06:00:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:00:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:00:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 929 transitions. [2021-08-13 06:00:52,478 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.860982391102873 [2021-08-13 06:00:52,478 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 929 transitions. [2021-08-13 06:00:52,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 929 transitions. [2021-08-13 06:00:52,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:52,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 929 transitions. [2021-08-13 06:00:52,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.46153846153847) internal successors, (929), 13 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,483 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,483 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2021-08-13 06:00:52,483 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 202 transitions, 1171 flow [2021-08-13 06:00:52,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,484 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:52,484 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:52,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 06:00:52,484 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1702036349, now seen corresponding path program 1 times [2021-08-13 06:00:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:52,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489395175] [2021-08-13 06:00:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:52,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:52,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:52,520 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:00:52,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:00:52,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:00:52,537 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:00:52,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:52,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:52,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:52,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489395175] [2021-08-13 06:00:52,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489395175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:52,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:52,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:00:52,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814120439] [2021-08-13 06:00:52,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:00:52,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:52,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:00:52,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:00:52,545 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 06:00:52,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 202 transitions, 1171 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:52,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 06:00:52,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:52,780 INFO L129 PetriNetUnfolder]: 852/2051 cut-off events. [2021-08-13 06:00:52,780 INFO L130 PetriNetUnfolder]: For 416/471 co-relation queries the response was YES. [2021-08-13 06:00:52,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4727 conditions, 2051 events. 852/2051 cut-off events. For 416/471 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17075 event pairs, 48 based on Foata normal form. 12/1909 useless extension candidates. Maximal degree in co-relation 4685. Up to 434 conditions per place. [2021-08-13 06:00:52,787 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 10 selfloop transitions, 6 changer transitions 133/222 dead transitions. [2021-08-13 06:00:52,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 222 transitions, 1233 flow [2021-08-13 06:00:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 06:00:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 06:00:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-08-13 06:00:52,790 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-08-13 06:00:52,790 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-08-13 06:00:52,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-08-13 06:00:52,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:52,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-08-13 06:00:52,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,793 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,793 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2021-08-13 06:00:52,793 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 222 transitions, 1233 flow [2021-08-13 06:00:52,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,793 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:52,794 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:52,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 06:00:52,794 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:52,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:52,794 INFO L82 PathProgramCache]: Analyzing trace with hash -301753903, now seen corresponding path program 1 times [2021-08-13 06:00:52,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:52,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211385715] [2021-08-13 06:00:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:52,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:52,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:52,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:52,829 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:00:52,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:00:52,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:00:52,846 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:00:52,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:52,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:52,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:52,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211385715] [2021-08-13 06:00:52,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211385715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:52,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:52,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:00:52,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716522801] [2021-08-13 06:00:52,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:00:52,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:52,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:00:52,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:00:52,855 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 06:00:52,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 222 transitions, 1233 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:52,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:52,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 06:00:52,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:53,127 INFO L129 PetriNetUnfolder]: 590/1490 cut-off events. [2021-08-13 06:00:53,128 INFO L130 PetriNetUnfolder]: For 195/790 co-relation queries the response was YES. [2021-08-13 06:00:53,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 1490 events. 590/1490 cut-off events. For 195/790 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12268 event pairs, 9 based on Foata normal form. 126/1502 useless extension candidates. Maximal degree in co-relation 3996. Up to 441 conditions per place. [2021-08-13 06:00:53,132 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 10 selfloop transitions, 9 changer transitions 135/210 dead transitions. [2021-08-13 06:00:53,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 210 transitions, 1169 flow [2021-08-13 06:00:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:00:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:00:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-08-13 06:00:53,134 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-08-13 06:00:53,134 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-08-13 06:00:53,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-08-13 06:00:53,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:53,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-08-13 06:00:53,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,140 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,140 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2021-08-13 06:00:53,140 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 210 transitions, 1169 flow [2021-08-13 06:00:53,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,141 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:53,141 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:53,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 06:00:53,141 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash 468483167, now seen corresponding path program 1 times [2021-08-13 06:00:53,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:53,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990723829] [2021-08-13 06:00:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:53,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:53,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:53,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:53,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:53,219 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:00:53,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:00:53,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:00:53,239 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:00:53,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:53,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:53,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:53,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990723829] [2021-08-13 06:00:53,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990723829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:53,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:53,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 06:00:53,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66651011] [2021-08-13 06:00:53,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 06:00:53,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:53,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 06:00:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 06:00:53,252 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 06:00:53,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 210 transitions, 1169 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:53,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 06:00:53,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:53,645 INFO L129 PetriNetUnfolder]: 522/1334 cut-off events. [2021-08-13 06:00:53,645 INFO L130 PetriNetUnfolder]: For 287/1254 co-relation queries the response was YES. [2021-08-13 06:00:53,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 1334 events. 522/1334 cut-off events. For 287/1254 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11182 event pairs, 1 based on Foata normal form. 172/1408 useless extension candidates. Maximal degree in co-relation 4407. Up to 422 conditions per place. [2021-08-13 06:00:53,652 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 4 selfloop transitions, 12 changer transitions 110/182 dead transitions. [2021-08-13 06:00:53,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 182 transitions, 1173 flow [2021-08-13 06:00:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 06:00:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 06:00:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2021-08-13 06:00:53,656 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8734939759036144 [2021-08-13 06:00:53,656 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2021-08-13 06:00:53,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2021-08-13 06:00:53,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:53,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2021-08-13 06:00:53,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,663 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,663 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 50 predicate places. [2021-08-13 06:00:53,663 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 182 transitions, 1173 flow [2021-08-13 06:00:53,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,663 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:00:53,663 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:00:53,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 06:00:53,664 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:00:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:00:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1103345026, now seen corresponding path program 1 times [2021-08-13 06:00:53,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:00:53,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906307978] [2021-08-13 06:00:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:00:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:00:53,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:53,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:53,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:00:53,759 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:00:53,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:00:53,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:53,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:00:53,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:00:53,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:00:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:00:53,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:00:53,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906307978] [2021-08-13 06:00:53,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906307978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:00:53,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:00:53,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:00:53,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23560542] [2021-08-13 06:00:53,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:00:53,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:00:53,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:00:53,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:00:53,799 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2021-08-13 06:00:53,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 182 transitions, 1173 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:53,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:00:53,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2021-08-13 06:00:53,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:00:54,029 INFO L129 PetriNetUnfolder]: 800/1971 cut-off events. [2021-08-13 06:00:54,029 INFO L130 PetriNetUnfolder]: For 448/913 co-relation queries the response was YES. [2021-08-13 06:00:54,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6686 conditions, 1971 events. 800/1971 cut-off events. For 448/913 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 17882 event pairs, 1 based on Foata normal form. 11/1820 useless extension candidates. Maximal degree in co-relation 6634. Up to 648 conditions per place. [2021-08-13 06:00:54,036 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 0 selfloop transitions, 0 changer transitions 193/193 dead transitions. [2021-08-13 06:00:54,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 193 transitions, 1339 flow [2021-08-13 06:00:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 06:00:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 06:00:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2021-08-13 06:00:54,037 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8502581755593803 [2021-08-13 06:00:54,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2021-08-13 06:00:54,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2021-08-13 06:00:54,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:00:54,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2021-08-13 06:00:54,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:54,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:54,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:54,040 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 54 predicate places. [2021-08-13 06:00:54,040 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 193 transitions, 1339 flow [2021-08-13 06:00:54,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:00:54,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown