/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:29:02,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:29:02,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:29:02,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:29:02,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:29:02,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:29:02,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:29:02,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:29:02,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:29:02,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:29:02,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:29:02,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:29:02,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:29:02,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:29:02,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:29:02,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:29:02,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:29:02,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:29:02,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:29:02,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:29:02,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:29:02,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:29:02,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:29:02,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:29:02,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:29:02,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:29:02,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:29:02,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:29:02,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:29:02,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:29:02,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:29:02,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:29:02,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:29:02,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:29:02,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:29:02,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:29:02,750 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-SemanticLbe.epf [2021-03-11 20:29:02,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:29:02,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:29:02,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:29:02,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:29:02,789 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:29:02,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:29:02,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:29:02,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:29:02,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:29:02,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:29:02,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:29:02,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:29:02,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:29:02,791 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:29:02,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:29:02,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:29:02,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:29:02,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:29:02,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:29:02,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:29:02,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:29:02,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:29:02,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:29:02,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:29:02,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:29:02,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:29:02,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:29:02,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:29:02,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:29:03,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:29:03,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:29:03,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:29:03,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:29:03,080 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:29:03,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-11 20:29:03,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884e84cca/aa9d8002277e4fb7baad483c7d21cd5b/FLAGab871c404 [2021-03-11 20:29:03,708 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:29:03,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-11 20:29:03,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884e84cca/aa9d8002277e4fb7baad483c7d21cd5b/FLAGab871c404 [2021-03-11 20:29:04,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884e84cca/aa9d8002277e4fb7baad483c7d21cd5b [2021-03-11 20:29:04,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:29:04,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:29:04,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:29:04,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:29:04,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:29:04,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef70b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04, skipping insertion in model container [2021-03-11 20:29:04,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:29:04,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:29:04,341 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-03-11 20:29:04,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:29:04,524 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:29:04,537 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-03-11 20:29:04,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:29:04,634 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:29:04,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04 WrapperNode [2021-03-11 20:29:04,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:29:04,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:29:04,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:29:04,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:29:04,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:29:04,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:29:04,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:29:04,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:29:04,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (1/1) ... [2021-03-11 20:29:04,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:29:04,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:29:04,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:29:04,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:29:04,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (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 [2021-03-11 20:29:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:29:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:29:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:29:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:29:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:29:04,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:29:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:29:04,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:29:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:29:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:29:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:29:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:29:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:29:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:29:04,759 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:29:05,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:29:05,071 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:29:05,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:29:05 BoogieIcfgContainer [2021-03-11 20:29:05,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:29:05,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:29:05,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:29:05,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:29:05,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:29:04" (1/3) ... [2021-03-11 20:29:05,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff9c27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:29:05, skipping insertion in model container [2021-03-11 20:29:05,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:04" (2/3) ... [2021-03-11 20:29:05,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff9c27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:29:05, skipping insertion in model container [2021-03-11 20:29:05,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:29:05" (3/3) ... [2021-03-11 20:29:05,079 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-03-11 20:29:05,084 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:29:05,088 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:29:05,088 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:29:05,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,120 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,120 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,120 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,120 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,120 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,121 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,121 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,136 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,137 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,137 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,140 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,140 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:05,141 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:29:05,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:29:05,189 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:29:05,189 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:29:05,189 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:29:05,189 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:29:05,189 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:29:05,189 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:29:05,189 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:29:05,189 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:29:05,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 20:29:05,254 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 20:29:05,254 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:05,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:29:05,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 20:29:05,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-11 20:29:05,273 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:29:05,292 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-11 20:29:05,295 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-11 20:29:05,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-11 20:29:05,318 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 20:29:05,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:05,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:29:05,320 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:29:07,105 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 20:29:07,329 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 20:29:07,436 INFO L131 LiptonReduction]: Checked pairs total: 1720 [2021-03-11 20:29:07,436 INFO L133 LiptonReduction]: Total number of compositions: 44 [2021-03-11 20:29:07,438 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2168 [2021-03-11 20:29:07,448 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-11 20:29:07,448 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:07,448 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:07,449 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:07,449 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:07,453 INFO L82 PathProgramCache]: Analyzing trace with hash 709366201, now seen corresponding path program 1 times [2021-03-11 20:29:07,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:07,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528971708] [2021-03-11 20:29:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:07,706 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:29:07,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:29:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:07,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528971708] [2021-03-11 20:29:07,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:07,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:29:07,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356079862] [2021-03-11 20:29:07,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:29:07,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:07,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:29:07,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:29:07,739 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-11 20:29:07,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2021-03-11 20:29:07,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:07,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-11 20:29:07,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:07,806 INFO L129 PetriNetUnfolder]: 90/211 cut-off events. [2021-03-11 20:29:07,807 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:07,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 211 events. 90/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1020 event pairs, 28 based on Foata normal form. 16/219 useless extension candidates. Maximal degree in co-relation 379. Up to 85 conditions per place. [2021-03-11 20:29:07,810 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 7 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2021-03-11 20:29:07,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 83 flow [2021-03-11 20:29:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:29:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:29:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-03-11 20:29:07,820 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-11 20:29:07,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-03-11 20:29:07,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-03-11 20:29:07,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:07,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-03-11 20:29:07,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2021-03-11 20:29:07,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-03-11 20:29:07,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-03-11 20:29:07,834 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 279 transitions. [2021-03-11 20:29:07,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 83 flow [2021-03-11 20:29:07,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:29:07,838 INFO L241 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2021-03-11 20:29:07,840 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2021-03-11 20:29:07,841 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-03-11 20:29:07,841 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2021-03-11 20:29:07,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2021-03-11 20:29:07,842 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:07,842 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:07,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:29:07,842 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:07,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1031961655, now seen corresponding path program 1 times [2021-03-11 20:29:07,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:07,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837030890] [2021-03-11 20:29:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:07,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:07,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:07,956 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:29:07,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:29:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:07,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837030890] [2021-03-11 20:29:07,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:07,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:29:07,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760650569] [2021-03-11 20:29:07,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:07,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:07,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-11 20:29:07,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-11 20:29:07,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:07,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-11 20:29:07,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,009 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-11 20:29:08,010 INFO L130 PetriNetUnfolder]: For 49/118 co-relation queries the response was YES. [2021-03-11 20:29:08,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 184 events. 75/184 cut-off events. For 49/118 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 819 event pairs, 5 based on Foata normal form. 2/183 useless extension candidates. Maximal degree in co-relation 548. Up to 78 conditions per place. [2021-03-11 20:29:08,012 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 12 selfloop transitions, 11 changer transitions 0/32 dead transitions. [2021-03-11 20:29:08,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 186 flow [2021-03-11 20:29:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-03-11 20:29:08,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-11 20:29:08,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-03-11 20:29:08,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-03-11 20:29:08,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-03-11 20:29:08,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-11 20:29:08,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,019 INFO L185 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 372 transitions. [2021-03-11 20:29:08,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 186 flow [2021-03-11 20:29:08,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:29:08,022 INFO L241 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2021-03-11 20:29:08,022 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2021-03-11 20:29:08,023 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2021-03-11 20:29:08,023 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2021-03-11 20:29:08,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-11 20:29:08,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,024 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:29:08,024 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash 515486085, now seen corresponding path program 1 times [2021-03-11 20:29:08,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819157257] [2021-03-11 20:29:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,102 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:29:08,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:29:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819157257] [2021-03-11 20:29:08,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:29:08,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736665437] [2021-03-11 20:29:08,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:08,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:08,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:08,113 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-11 20:29:08,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-11 20:29:08,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-11 20:29:08,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,164 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-11 20:29:08,164 INFO L130 PetriNetUnfolder]: For 136/223 co-relation queries the response was YES. [2021-03-11 20:29:08,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 164 events. 64/164 cut-off events. For 136/223 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 713 event pairs, 6 based on Foata normal form. 9/172 useless extension candidates. Maximal degree in co-relation 580. Up to 72 conditions per place. [2021-03-11 20:29:08,166 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 16 selfloop transitions, 16 changer transitions 0/41 dead transitions. [2021-03-11 20:29:08,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 302 flow [2021-03-11 20:29:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-03-11 20:29:08,168 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-11 20:29:08,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-03-11 20:29:08,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-03-11 20:29:08,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-03-11 20:29:08,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-11 20:29:08,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,172 INFO L185 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 4 states and 372 transitions. [2021-03-11 20:29:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 302 flow [2021-03-11 20:29:08,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 302 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:29:08,175 INFO L241 Difference]: Finished difference. Result has 38 places, 39 transitions, 306 flow [2021-03-11 20:29:08,175 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2021-03-11 20:29:08,175 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:29:08,175 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 306 flow [2021-03-11 20:29:08,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-11 20:29:08,176 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,176 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:29:08,176 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1198899967, now seen corresponding path program 1 times [2021-03-11 20:29:08,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40789424] [2021-03-11 20:29:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40789424] [2021-03-11 20:29:08,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:29:08,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356865225] [2021-03-11 20:29:08,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:29:08,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:29:08,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:29:08,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 117 [2021-03-11 20:29:08,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2021-03-11 20:29:08,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 117 [2021-03-11 20:29:08,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,262 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-11 20:29:08,262 INFO L130 PetriNetUnfolder]: For 411/468 co-relation queries the response was YES. [2021-03-11 20:29:08,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 151 events. 57/151 cut-off events. For 411/468 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 633 event pairs, 2 based on Foata normal form. 7/156 useless extension candidates. Maximal degree in co-relation 613. Up to 67 conditions per place. [2021-03-11 20:29:08,273 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 7 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2021-03-11 20:29:08,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 376 flow [2021-03-11 20:29:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:29:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:29:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-11 20:29:08,275 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8490028490028491 [2021-03-11 20:29:08,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-11 20:29:08,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-11 20:29:08,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-11 20:29:08,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2021-03-11 20:29:08,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-03-11 20:29:08,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-03-11 20:29:08,278 INFO L185 Difference]: Start difference. First operand has 38 places, 39 transitions, 306 flow. Second operand 3 states and 298 transitions. [2021-03-11 20:29:08,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 376 flow [2021-03-11 20:29:08,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:29:08,284 INFO L241 Difference]: Finished difference. Result has 41 places, 44 transitions, 381 flow [2021-03-11 20:29:08,284 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2021-03-11 20:29:08,284 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-03-11 20:29:08,285 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 381 flow [2021-03-11 20:29:08,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2021-03-11 20:29:08,285 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,285 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:29:08,285 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1488777021, now seen corresponding path program 1 times [2021-03-11 20:29:08,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696374168] [2021-03-11 20:29:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:08,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,355 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:29:08,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:29:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696374168] [2021-03-11 20:29:08,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:29:08,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905654822] [2021-03-11 20:29:08,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:08,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:08,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:08,367 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-11 20:29:08,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2021-03-11 20:29:08,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-11 20:29:08,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,402 INFO L129 PetriNetUnfolder]: 54/162 cut-off events. [2021-03-11 20:29:08,402 INFO L130 PetriNetUnfolder]: For 463/594 co-relation queries the response was YES. [2021-03-11 20:29:08,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 162 events. 54/162 cut-off events. For 463/594 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 751 event pairs, 1 based on Foata normal form. 21/181 useless extension candidates. Maximal degree in co-relation 770. Up to 74 conditions per place. [2021-03-11 20:29:08,405 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 14 selfloop transitions, 23 changer transitions 3/49 dead transitions. [2021-03-11 20:29:08,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 509 flow [2021-03-11 20:29:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-11 20:29:08,407 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-03-11 20:29:08,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-11 20:29:08,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,410 INFO L185 Difference]: Start difference. First operand has 41 places, 44 transitions, 381 flow. Second operand 4 states and 371 transitions. [2021-03-11 20:29:08,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 509 flow [2021-03-11 20:29:08,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:29:08,415 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 476 flow [2021-03-11 20:29:08,415 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=476, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2021-03-11 20:29:08,415 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-03-11 20:29:08,415 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 476 flow [2021-03-11 20:29:08,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2021-03-11 20:29:08,416 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,416 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:29:08,416 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1488806161, now seen corresponding path program 1 times [2021-03-11 20:29:08,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354680579] [2021-03-11 20:29:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354680579] [2021-03-11 20:29:08,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:29:08,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687883139] [2021-03-11 20:29:08,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:08,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:08,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:08,484 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2021-03-11 20:29:08,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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) [2021-03-11 20:29:08,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2021-03-11 20:29:08,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,554 INFO L129 PetriNetUnfolder]: 124/326 cut-off events. [2021-03-11 20:29:08,554 INFO L130 PetriNetUnfolder]: For 1279/1374 co-relation queries the response was YES. [2021-03-11 20:29:08,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 326 events. 124/326 cut-off events. For 1279/1374 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2016 event pairs, 27 based on Foata normal form. 37/349 useless extension candidates. Maximal degree in co-relation 1168. Up to 163 conditions per place. [2021-03-11 20:29:08,557 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 8 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2021-03-11 20:29:08,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 528 flow [2021-03-11 20:29:08,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:29:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:29:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-11 20:29:08,559 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7743589743589744 [2021-03-11 20:29:08,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-11 20:29:08,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-11 20:29:08,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-11 20:29:08,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2021-03-11 20:29:08,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-11 20:29:08,562 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-11 20:29:08,563 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 476 flow. Second operand 5 states and 453 transitions. [2021-03-11 20:29:08,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 528 flow [2021-03-11 20:29:08,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 524 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-03-11 20:29:08,567 INFO L241 Difference]: Finished difference. Result has 53 places, 51 transitions, 532 flow [2021-03-11 20:29:08,567 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2021-03-11 20:29:08,567 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2021-03-11 20:29:08,567 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 532 flow [2021-03-11 20:29:08,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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) [2021-03-11 20:29:08,567 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,567 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:29:08,568 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1721917859, now seen corresponding path program 1 times [2021-03-11 20:29:08,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506109055] [2021-03-11 20:29:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:08,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,628 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:29:08,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:29:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506109055] [2021-03-11 20:29:08,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:29:08,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824435497] [2021-03-11 20:29:08,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:08,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:08,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:08,638 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-11 20:29:08,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2021-03-11 20:29:08,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-11 20:29:08,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,702 INFO L129 PetriNetUnfolder]: 163/421 cut-off events. [2021-03-11 20:29:08,703 INFO L130 PetriNetUnfolder]: For 1549/1718 co-relation queries the response was YES. [2021-03-11 20:29:08,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 421 events. 163/421 cut-off events. For 1549/1718 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2834 event pairs, 44 based on Foata normal form. 38/429 useless extension candidates. Maximal degree in co-relation 1753. Up to 269 conditions per place. [2021-03-11 20:29:08,706 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 14 selfloop transitions, 22 changer transitions 4/56 dead transitions. [2021-03-11 20:29:08,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 678 flow [2021-03-11 20:29:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-11 20:29:08,707 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-03-11 20:29:08,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-11 20:29:08,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,710 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,710 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 532 flow. Second operand 4 states and 371 transitions. [2021-03-11 20:29:08,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 678 flow [2021-03-11 20:29:08,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:29:08,717 INFO L241 Difference]: Finished difference. Result has 58 places, 50 transitions, 620 flow [2021-03-11 20:29:08,717 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2021-03-11 20:29:08,718 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2021-03-11 20:29:08,718 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 620 flow [2021-03-11 20:29:08,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2021-03-11 20:29:08,718 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,718 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:29:08,718 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2002852042, now seen corresponding path program 1 times [2021-03-11 20:29:08,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508525178] [2021-03-11 20:29:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:08,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,757 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:29:08,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:29:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508525178] [2021-03-11 20:29:08,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:29:08,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994848885] [2021-03-11 20:29:08,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:08,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:08,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:08,767 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-11 20:29:08,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2021-03-11 20:29:08,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-11 20:29:08,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:08,833 INFO L129 PetriNetUnfolder]: 210/525 cut-off events. [2021-03-11 20:29:08,834 INFO L130 PetriNetUnfolder]: For 2043/2263 co-relation queries the response was YES. [2021-03-11 20:29:08,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 525 events. 210/525 cut-off events. For 2043/2263 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 3759 event pairs, 67 based on Foata normal form. 37/510 useless extension candidates. Maximal degree in co-relation 2124. Up to 375 conditions per place. [2021-03-11 20:29:08,838 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 11 selfloop transitions, 21 changer transitions 7/55 dead transitions. [2021-03-11 20:29:08,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 780 flow [2021-03-11 20:29:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-11 20:29:08,839 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-03-11 20:29:08,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:08,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-11 20:29:08,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-11 20:29:08,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-11 20:29:08,842 INFO L185 Difference]: Start difference. First operand has 58 places, 50 transitions, 620 flow. Second operand 4 states and 371 transitions. [2021-03-11 20:29:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 780 flow [2021-03-11 20:29:08,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 759 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:29:08,853 INFO L241 Difference]: Finished difference. Result has 61 places, 46 transitions, 586 flow [2021-03-11 20:29:08,853 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2021-03-11 20:29:08,853 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 34 predicate places. [2021-03-11 20:29:08,853 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 586 flow [2021-03-11 20:29:08,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2021-03-11 20:29:08,854 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:08,854 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:08,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:29:08,854 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:08,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1589639370, now seen corresponding path program 1 times [2021-03-11 20:29:08,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:08,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107617179] [2021-03-11 20:29:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:08,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:08,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:08,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107617179] [2021-03-11 20:29:08,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:08,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:29:08,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526767370] [2021-03-11 20:29:08,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:29:08,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:29:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:29:08,916 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2021-03-11 20:29:08,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2021-03-11 20:29:08,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:08,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2021-03-11 20:29:08,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:09,017 INFO L129 PetriNetUnfolder]: 169/477 cut-off events. [2021-03-11 20:29:09,018 INFO L130 PetriNetUnfolder]: For 2219/2999 co-relation queries the response was YES. [2021-03-11 20:29:09,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 477 events. 169/477 cut-off events. For 2219/2999 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 3610 event pairs, 9 based on Foata normal form. 233/680 useless extension candidates. Maximal degree in co-relation 2091. Up to 363 conditions per place. [2021-03-11 20:29:09,021 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 7 changer transitions 23/56 dead transitions. [2021-03-11 20:29:09,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 690 flow [2021-03-11 20:29:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:29:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:29:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2021-03-11 20:29:09,023 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7741147741147741 [2021-03-11 20:29:09,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2021-03-11 20:29:09,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2021-03-11 20:29:09,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:09,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2021-03-11 20:29:09,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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) [2021-03-11 20:29:09,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-11 20:29:09,027 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-11 20:29:09,027 INFO L185 Difference]: Start difference. First operand has 61 places, 46 transitions, 586 flow. Second operand 7 states and 634 transitions. [2021-03-11 20:29:09,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 690 flow [2021-03-11 20:29:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 633 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 20:29:09,034 INFO L241 Difference]: Finished difference. Result has 67 places, 33 transitions, 441 flow [2021-03-11 20:29:09,035 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=67, PETRI_TRANSITIONS=33} [2021-03-11 20:29:09,035 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2021-03-11 20:29:09,035 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 33 transitions, 441 flow [2021-03-11 20:29:09,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2021-03-11 20:29:09,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:09,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:09,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:29:09,036 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash -421145428, now seen corresponding path program 1 times [2021-03-11 20:29:09,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:09,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538025520] [2021-03-11 20:29:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:09,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:09,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:09,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:09,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:09,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:09,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:09,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:09,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:09,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538025520] [2021-03-11 20:29:09,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:09,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:29:09,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930883211] [2021-03-11 20:29:09,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:29:09,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:29:09,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:29:09,094 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2021-03-11 20:29:09,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 33 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2021-03-11 20:29:09,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:09,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2021-03-11 20:29:09,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:09,134 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2021-03-11 20:29:09,135 INFO L130 PetriNetUnfolder]: For 477/601 co-relation queries the response was YES. [2021-03-11 20:29:09,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 81 events. 21/81 cut-off events. For 477/601 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 299 event pairs, 0 based on Foata normal form. 35/113 useless extension candidates. Maximal degree in co-relation 488. Up to 58 conditions per place. [2021-03-11 20:29:09,136 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2021-03-11 20:29:09,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 36 transitions, 483 flow [2021-03-11 20:29:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:29:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:29:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2021-03-11 20:29:09,138 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7631257631257631 [2021-03-11 20:29:09,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2021-03-11 20:29:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2021-03-11 20:29:09,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:09,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2021-03-11 20:29:09,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 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) [2021-03-11 20:29:09,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-11 20:29:09,143 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-11 20:29:09,143 INFO L185 Difference]: Start difference. First operand has 67 places, 33 transitions, 441 flow. Second operand 7 states and 625 transitions. [2021-03-11 20:29:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 36 transitions, 483 flow [2021-03-11 20:29:09,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 36 transitions, 334 flow, removed 18 selfloop flow, removed 14 redundant places. [2021-03-11 20:29:09,149 INFO L241 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2021-03-11 20:29:09,150 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2021-03-11 20:29:09,150 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2021-03-11 20:29:09,150 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2021-03-11 20:29:09,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2021-03-11 20:29:09,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:29:09,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:29:09 BasicIcfg [2021-03-11 20:29:09,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:29:09,155 INFO L168 Benchmark]: Toolchain (without parser) took 5004.00 ms. Allocated memory was 255.9 MB in the beginning and 415.2 MB in the end (delta: 159.4 MB). Free memory was 234.4 MB in the beginning and 349.9 MB in the end (delta: -115.6 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:09,155 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:29:09,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.33 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 233.8 MB in the beginning and 307.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:09,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 346.0 MB. Free memory was 307.6 MB in the beginning and 305.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:09,157 INFO L168 Benchmark]: Boogie Preprocessor took 17.30 ms. Allocated memory is still 346.0 MB. Free memory was 305.5 MB in the beginning and 304.8 MB in the end (delta: 711.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:29:09,160 INFO L168 Benchmark]: RCFGBuilder took 381.50 ms. Allocated memory is still 346.0 MB. Free memory was 304.2 MB in the beginning and 283.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:09,160 INFO L168 Benchmark]: TraceAbstraction took 4079.69 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 282.5 MB in the beginning and 349.9 MB in the end (delta: -67.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:09,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 480.33 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 233.8 MB in the beginning and 307.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 346.0 MB. Free memory was 307.6 MB in the beginning and 305.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.30 ms. Allocated memory is still 346.0 MB. Free memory was 305.5 MB in the beginning and 304.8 MB in the end (delta: 711.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 381.50 ms. Allocated memory is still 346.0 MB. Free memory was 304.2 MB in the beginning and 283.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4079.69 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 282.5 MB in the beginning and 349.9 MB in the end (delta: -67.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2141.6ms, 67 PlacesBefore, 27 PlacesAfterwards, 58 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1720 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 958, positive: 877, positive conditional: 0, positive unconditional: 877, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 614, positive: 571, positive conditional: 0, positive unconditional: 571, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 614, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 196, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 167, negative conditional: 0, negative unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 958, positive: 306, positive conditional: 0, positive unconditional: 306, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 614, unknown conditional: 0, unknown unconditional: 614] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3967.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 749.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2254.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 25 SDslu, 39 SDs, 0 SdLazy, 127 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.2ms SsaConstructionTime, 194.9ms SatisfiabilityAnalysisTime, 550.2ms InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...