./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:21:27,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:21:27,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:21:27,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:21:27,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:21:27,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:21:27,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:21:27,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:21:27,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:21:27,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:21:27,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:21:27,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:21:27,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:21:27,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:21:27,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:21:27,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:21:27,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:21:27,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:21:27,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:21:27,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:21:27,794 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:21:27,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:21:27,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:21:27,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:21:27,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:21:27,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:21:27,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:21:27,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:21:27,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:21:27,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:21:27,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:21:27,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:21:27,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:21:27,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:21:27,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:21:27,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:21:27,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:21:27,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:21:27,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:21:27,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:21:27,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:21:27,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:21:27,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:21:27,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:21:27,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:21:27,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:21:27,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:21:27,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:21:27,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:21:27,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:21:27,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:21:27,842 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:21:27,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:21:27,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:21:27,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:21:27,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:21:27,844 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:21:27,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:21:27,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:21:27,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-07-19 21:21:28,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:21:28,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:21:28,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:21:28,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:21:28,058 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:21:28,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-07-19 21:21:28,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45bd36f0/8a60bc7825f24a5fbdcbbfab2a1f3802/FLAGc22f84151 [2022-07-19 21:21:28,462 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:21:28,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-07-19 21:21:28,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45bd36f0/8a60bc7825f24a5fbdcbbfab2a1f3802/FLAGc22f84151 [2022-07-19 21:21:28,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45bd36f0/8a60bc7825f24a5fbdcbbfab2a1f3802 [2022-07-19 21:21:28,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:21:28,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:21:28,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:21:28,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:21:28,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:21:28,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec22085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28, skipping insertion in model container [2022-07-19 21:21:28,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:21:28,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:21:28,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-07-19 21:21:28,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:21:28,651 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:21:28,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-07-19 21:21:28,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:21:28,674 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:21:28,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28 WrapperNode [2022-07-19 21:21:28,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:21:28,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:21:28,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:21:28,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:21:28,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,701 INFO L137 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 112 [2022-07-19 21:21:28,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:21:28,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:21:28,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:21:28,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:21:28,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:21:28,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:21:28,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:21:28,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:21:28,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (1/1) ... [2022-07-19 21:21:28,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:21:28,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:21:28,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:21:28,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:21:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:21:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:21:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:21:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:21:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:21:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:21:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:21:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:21:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:21:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:21:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:21:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:21:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:21:28,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:21:28,843 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:21:28,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:21:29,066 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:21:29,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:21:29,073 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:21:29,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:21:29 BoogieIcfgContainer [2022-07-19 21:21:29,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:21:29,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:21:29,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:21:29,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:21:29,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:21:28" (1/3) ... [2022-07-19 21:21:29,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62191228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:21:29, skipping insertion in model container [2022-07-19 21:21:29,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:21:28" (2/3) ... [2022-07-19 21:21:29,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62191228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:21:29, skipping insertion in model container [2022-07-19 21:21:29,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:21:29" (3/3) ... [2022-07-19 21:21:29,080 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-07-19 21:21:29,083 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:21:29,089 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:21:29,091 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:21:29,091 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:21:29,158 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:21:29,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 174 transitions, 364 flow [2022-07-19 21:21:29,242 INFO L129 PetriNetUnfolder]: 15/172 cut-off events. [2022-07-19 21:21:29,242 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:21:29,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 15/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2022-07-19 21:21:29,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 174 transitions, 364 flow [2022-07-19 21:21:29,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2022-07-19 21:21:29,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:21:29,259 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3dfb36b9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31c3c9aa [2022-07-19 21:21:29,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:21:29,291 INFO L129 PetriNetUnfolder]: 15/162 cut-off events. [2022-07-19 21:21:29,291 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:21:29,291 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:29,292 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:29,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash -425245189, now seen corresponding path program 1 times [2022-07-19 21:21:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:29,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439405918] [2022-07-19 21:21:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439405918] [2022-07-19 21:21:29,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439405918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:29,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:29,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:21:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77282929] [2022-07-19 21:21:29,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:21:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:21:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:21:29,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 174 [2022-07-19 21:21:29,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 163 transitions, 338 flow. Second operand has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 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) [2022-07-19 21:21:29,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:29,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 174 [2022-07-19 21:21:29,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:29,528 INFO L129 PetriNetUnfolder]: 6/154 cut-off events. [2022-07-19 21:21:29,528 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-19 21:21:29,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 154 events. 6/154 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 11/154 useless extension candidates. Maximal degree in co-relation 125. Up to 5 conditions per place. [2022-07-19 21:21:29,530 INFO L132 encePairwiseOnDemand]: 165/174 looper letters, 4 selfloop transitions, 0 changer transitions 5/154 dead transitions. [2022-07-19 21:21:29,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 328 flow [2022-07-19 21:21:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:21:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:21:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 333 transitions. [2022-07-19 21:21:29,551 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9568965517241379 [2022-07-19 21:21:29,551 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 333 transitions. [2022-07-19 21:21:29,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 333 transitions. [2022-07-19 21:21:29,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:29,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 333 transitions. [2022-07-19 21:21:29,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 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) [2022-07-19 21:21:29,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-07-19 21:21:29,568 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-07-19 21:21:29,570 INFO L186 Difference]: Start difference. First operand has 155 places, 163 transitions, 338 flow. Second operand 2 states and 333 transitions. [2022-07-19 21:21:29,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 328 flow [2022-07-19 21:21:29,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:21:29,591 INFO L242 Difference]: Finished difference. Result has 152 places, 149 transitions, 302 flow [2022-07-19 21:21:29,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=302, PETRI_PLACES=152, PETRI_TRANSITIONS=149} [2022-07-19 21:21:29,595 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2022-07-19 21:21:29,595 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 149 transitions, 302 flow [2022-07-19 21:21:29,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 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) [2022-07-19 21:21:29,596 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:29,596 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:29,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:21:29,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:29,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2116646914, now seen corresponding path program 1 times [2022-07-19 21:21:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:29,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799959129] [2022-07-19 21:21:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:29,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:29,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799959129] [2022-07-19 21:21:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799959129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:29,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:29,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:21:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415412838] [2022-07-19 21:21:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:29,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:21:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:21:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:21:29,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 174 [2022-07-19 21:21:29,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 149 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 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) [2022-07-19 21:21:29,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:29,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 174 [2022-07-19 21:21:29,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:30,130 INFO L129 PetriNetUnfolder]: 171/632 cut-off events. [2022-07-19 21:21:30,130 INFO L130 PetriNetUnfolder]: For 22/34 co-relation queries the response was YES. [2022-07-19 21:21:30,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 632 events. 171/632 cut-off events. For 22/34 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3089 event pairs, 41 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 961. Up to 122 conditions per place. [2022-07-19 21:21:30,136 INFO L132 encePairwiseOnDemand]: 167/174 looper letters, 65 selfloop transitions, 5 changer transitions 4/185 dead transitions. [2022-07-19 21:21:30,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 185 transitions, 527 flow [2022-07-19 21:21:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:21:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:21:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 801 transitions. [2022-07-19 21:21:30,140 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7672413793103449 [2022-07-19 21:21:30,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 801 transitions. [2022-07-19 21:21:30,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 801 transitions. [2022-07-19 21:21:30,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:30,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 801 transitions. [2022-07-19 21:21:30,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 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) [2022-07-19 21:21:30,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-07-19 21:21:30,147 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-07-19 21:21:30,147 INFO L186 Difference]: Start difference. First operand has 152 places, 149 transitions, 302 flow. Second operand 6 states and 801 transitions. [2022-07-19 21:21:30,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 185 transitions, 527 flow [2022-07-19 21:21:30,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 185 transitions, 527 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:21:30,153 INFO L242 Difference]: Finished difference. Result has 155 places, 152 transitions, 331 flow [2022-07-19 21:21:30,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2022-07-19 21:21:30,154 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 0 predicate places. [2022-07-19 21:21:30,155 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 331 flow [2022-07-19 21:21:30,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 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) [2022-07-19 21:21:30,155 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:30,156 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:30,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:21:30,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash 336168701, now seen corresponding path program 1 times [2022-07-19 21:21:30,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:30,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331653906] [2022-07-19 21:21:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:30,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:30,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331653906] [2022-07-19 21:21:30,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331653906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:30,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:30,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:21:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334125749] [2022-07-19 21:21:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:21:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:21:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:21:30,326 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-07-19 21:21:30,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 152 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 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) [2022-07-19 21:21:30,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:30,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-07-19 21:21:30,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:30,493 INFO L129 PetriNetUnfolder]: 119/657 cut-off events. [2022-07-19 21:21:30,493 INFO L130 PetriNetUnfolder]: For 39/50 co-relation queries the response was YES. [2022-07-19 21:21:30,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 657 events. 119/657 cut-off events. For 39/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3077 event pairs, 44 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 972. Up to 97 conditions per place. [2022-07-19 21:21:30,497 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 63 selfloop transitions, 14 changer transitions 0/188 dead transitions. [2022-07-19 21:21:30,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 188 transitions, 569 flow [2022-07-19 21:21:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:21:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:21:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1317 transitions. [2022-07-19 21:21:30,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.756896551724138 [2022-07-19 21:21:30,501 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1317 transitions. [2022-07-19 21:21:30,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1317 transitions. [2022-07-19 21:21:30,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:30,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1317 transitions. [2022-07-19 21:21:30,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.7) internal successors, (1317), 10 states have internal predecessors, (1317), 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) [2022-07-19 21:21:30,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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) [2022-07-19 21:21:30,507 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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) [2022-07-19 21:21:30,507 INFO L186 Difference]: Start difference. First operand has 155 places, 152 transitions, 331 flow. Second operand 10 states and 1317 transitions. [2022-07-19 21:21:30,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 188 transitions, 569 flow [2022-07-19 21:21:30,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 188 transitions, 565 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:21:30,513 INFO L242 Difference]: Finished difference. Result has 163 places, 157 transitions, 388 flow [2022-07-19 21:21:30,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=388, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2022-07-19 21:21:30,515 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 8 predicate places. [2022-07-19 21:21:30,515 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 388 flow [2022-07-19 21:21:30,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 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) [2022-07-19 21:21:30,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:30,516 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:21:30,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash -506615031, now seen corresponding path program 1 times [2022-07-19 21:21:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466481990] [2022-07-19 21:21:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:30,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:30,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466481990] [2022-07-19 21:21:30,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466481990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:30,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:30,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:21:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125491436] [2022-07-19 21:21:30,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:21:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:21:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:21:30,650 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-07-19 21:21:30,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 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) [2022-07-19 21:21:30,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:30,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-07-19 21:21:30,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:30,791 INFO L129 PetriNetUnfolder]: 105/629 cut-off events. [2022-07-19 21:21:30,791 INFO L130 PetriNetUnfolder]: For 88/97 co-relation queries the response was YES. [2022-07-19 21:21:30,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 629 events. 105/629 cut-off events. For 88/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2949 event pairs, 32 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 974. Up to 87 conditions per place. [2022-07-19 21:21:30,794 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 46 selfloop transitions, 11 changer transitions 19/187 dead transitions. [2022-07-19 21:21:30,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 611 flow [2022-07-19 21:21:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:21:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:21:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1316 transitions. [2022-07-19 21:21:30,797 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7563218390804598 [2022-07-19 21:21:30,797 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1316 transitions. [2022-07-19 21:21:30,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1316 transitions. [2022-07-19 21:21:30,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:30,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1316 transitions. [2022-07-19 21:21:30,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.6) internal successors, (1316), 10 states have internal predecessors, (1316), 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) [2022-07-19 21:21:30,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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) [2022-07-19 21:21:30,814 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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) [2022-07-19 21:21:30,815 INFO L186 Difference]: Start difference. First operand has 163 places, 157 transitions, 388 flow. Second operand 10 states and 1316 transitions. [2022-07-19 21:21:30,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 611 flow [2022-07-19 21:21:30,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 187 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:21:30,819 INFO L242 Difference]: Finished difference. Result has 170 places, 154 transitions, 393 flow [2022-07-19 21:21:30,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=170, PETRI_TRANSITIONS=154} [2022-07-19 21:21:30,820 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 15 predicate places. [2022-07-19 21:21:30,820 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 154 transitions, 393 flow [2022-07-19 21:21:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 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) [2022-07-19 21:21:30,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:30,824 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:30,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:21:30,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash 131354636, now seen corresponding path program 1 times [2022-07-19 21:21:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:30,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713357757] [2022-07-19 21:21:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:21:30,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:30,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713357757] [2022-07-19 21:21:30,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713357757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:30,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:30,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:21:30,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827492118] [2022-07-19 21:21:30,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:30,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:21:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:21:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:21:30,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-07-19 21:21:30,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 154 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-07-19 21:21:30,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:30,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-07-19 21:21:30,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:31,057 INFO L129 PetriNetUnfolder]: 118/629 cut-off events. [2022-07-19 21:21:31,058 INFO L130 PetriNetUnfolder]: For 137/148 co-relation queries the response was YES. [2022-07-19 21:21:31,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 629 events. 118/629 cut-off events. For 137/148 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2982 event pairs, 44 based on Foata normal form. 7/589 useless extension candidates. Maximal degree in co-relation 1019. Up to 97 conditions per place. [2022-07-19 21:21:31,061 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 56 selfloop transitions, 10 changer transitions 0/177 dead transitions. [2022-07-19 21:21:31,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 177 transitions, 587 flow [2022-07-19 21:21:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:21:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:21:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2022-07-19 21:21:31,063 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7593390804597702 [2022-07-19 21:21:31,063 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2022-07-19 21:21:31,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2022-07-19 21:21:31,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:31,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2022-07-19 21:21:31,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 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) [2022-07-19 21:21:31,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 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) [2022-07-19 21:21:31,068 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 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) [2022-07-19 21:21:31,068 INFO L186 Difference]: Start difference. First operand has 170 places, 154 transitions, 393 flow. Second operand 8 states and 1057 transitions. [2022-07-19 21:21:31,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 177 transitions, 587 flow [2022-07-19 21:21:31,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 177 transitions, 552 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-07-19 21:21:31,073 INFO L242 Difference]: Finished difference. Result has 165 places, 156 transitions, 398 flow [2022-07-19 21:21:31,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=398, PETRI_PLACES=165, PETRI_TRANSITIONS=156} [2022-07-19 21:21:31,075 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 10 predicate places. [2022-07-19 21:21:31,075 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 398 flow [2022-07-19 21:21:31,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-07-19 21:21:31,076 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:31,076 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:31,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:21:31,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -679366620, now seen corresponding path program 1 times [2022-07-19 21:21:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:31,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497462008] [2022-07-19 21:21:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:21:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497462008] [2022-07-19 21:21:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497462008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:31,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:31,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:21:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163069701] [2022-07-19 21:21:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:21:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:21:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:21:31,180 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-07-19 21:21:31,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-07-19 21:21:31,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:31,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-07-19 21:21:31,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:31,310 INFO L129 PetriNetUnfolder]: 104/601 cut-off events. [2022-07-19 21:21:31,310 INFO L130 PetriNetUnfolder]: For 112/121 co-relation queries the response was YES. [2022-07-19 21:21:31,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 601 events. 104/601 cut-off events. For 112/121 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2854 event pairs, 32 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 943. Up to 87 conditions per place. [2022-07-19 21:21:31,313 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 49 selfloop transitions, 9 changer transitions 7/176 dead transitions. [2022-07-19 21:21:31,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 176 transitions, 579 flow [2022-07-19 21:21:31,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:21:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:21:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1056 transitions. [2022-07-19 21:21:31,315 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7586206896551724 [2022-07-19 21:21:31,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1056 transitions. [2022-07-19 21:21:31,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1056 transitions. [2022-07-19 21:21:31,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:31,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1056 transitions. [2022-07-19 21:21:31,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 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) [2022-07-19 21:21:31,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 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) [2022-07-19 21:21:31,319 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 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) [2022-07-19 21:21:31,319 INFO L186 Difference]: Start difference. First operand has 165 places, 156 transitions, 398 flow. Second operand 8 states and 1056 transitions. [2022-07-19 21:21:31,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 176 transitions, 579 flow [2022-07-19 21:21:31,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 176 transitions, 561 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:21:31,322 INFO L242 Difference]: Finished difference. Result has 168 places, 155 transitions, 394 flow [2022-07-19 21:21:31,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=394, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2022-07-19 21:21:31,323 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 13 predicate places. [2022-07-19 21:21:31,323 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 394 flow [2022-07-19 21:21:31,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-07-19 21:21:31,323 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:31,323 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:31,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:21:31,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1008062393, now seen corresponding path program 1 times [2022-07-19 21:21:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145882992] [2022-07-19 21:21:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:31,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:21:31,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:31,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145882992] [2022-07-19 21:21:31,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145882992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:21:31,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748620776] [2022-07-19 21:21:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:21:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:21:31,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:21:31,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:21:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 21:21:31,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:21:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:21:32,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:21:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:21:32,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748620776] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:21:32,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:21:32,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-07-19 21:21:32,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370919409] [2022-07-19 21:21:32,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:32,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:21:32,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:21:32,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:21:32,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 174 [2022-07-19 21:21:32,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 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) [2022-07-19 21:21:32,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:32,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 174 [2022-07-19 21:21:32,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:32,774 INFO L129 PetriNetUnfolder]: 89/571 cut-off events. [2022-07-19 21:21:32,775 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-07-19 21:21:32,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 571 events. 89/571 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2674 event pairs, 24 based on Foata normal form. 6/540 useless extension candidates. Maximal degree in co-relation 906. Up to 71 conditions per place. [2022-07-19 21:21:32,778 INFO L132 encePairwiseOnDemand]: 160/174 looper letters, 49 selfloop transitions, 15 changer transitions 0/173 dead transitions. [2022-07-19 21:21:32,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 574 flow [2022-07-19 21:21:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:21:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:21:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1770 transitions. [2022-07-19 21:21:32,781 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7266009852216748 [2022-07-19 21:21:32,781 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1770 transitions. [2022-07-19 21:21:32,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1770 transitions. [2022-07-19 21:21:32,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:32,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1770 transitions. [2022-07-19 21:21:32,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.42857142857143) internal successors, (1770), 14 states have internal predecessors, (1770), 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) [2022-07-19 21:21:32,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 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) [2022-07-19 21:21:32,789 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 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) [2022-07-19 21:21:32,789 INFO L186 Difference]: Start difference. First operand has 168 places, 155 transitions, 394 flow. Second operand 14 states and 1770 transitions. [2022-07-19 21:21:32,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 574 flow [2022-07-19 21:21:32,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 173 transitions, 544 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-07-19 21:21:32,793 INFO L242 Difference]: Finished difference. Result has 175 places, 158 transitions, 426 flow [2022-07-19 21:21:32,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=426, PETRI_PLACES=175, PETRI_TRANSITIONS=158} [2022-07-19 21:21:32,794 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 20 predicate places. [2022-07-19 21:21:32,794 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 158 transitions, 426 flow [2022-07-19 21:21:32,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 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) [2022-07-19 21:21:32,795 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:32,795 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:32,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:21:33,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:21:33,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:33,014 INFO L85 PathProgramCache]: Analyzing trace with hash -209614447, now seen corresponding path program 1 times [2022-07-19 21:21:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:33,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422574726] [2022-07-19 21:21:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422574726] [2022-07-19 21:21:33,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422574726] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:21:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704987942] [2022-07-19 21:21:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:33,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:21:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:21:33,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:21:33,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:21:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:33,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 21:21:33,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:21:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:33,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:21:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:33,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704987942] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:21:33,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:21:33,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-07-19 21:21:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514519002] [2022-07-19 21:21:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:33,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:21:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:21:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:21:33,919 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 174 [2022-07-19 21:21:33,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 158 transitions, 426 flow. Second operand has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 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) [2022-07-19 21:21:33,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:33,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 174 [2022-07-19 21:21:33,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:34,211 INFO L129 PetriNetUnfolder]: 76/555 cut-off events. [2022-07-19 21:21:34,212 INFO L130 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-07-19 21:21:34,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 555 events. 76/555 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2656 event pairs, 27 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 910. Up to 80 conditions per place. [2022-07-19 21:21:34,214 INFO L132 encePairwiseOnDemand]: 160/174 looper letters, 50 selfloop transitions, 15 changer transitions 0/174 dead transitions. [2022-07-19 21:21:34,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 174 transitions, 610 flow [2022-07-19 21:21:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:21:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:21:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1768 transitions. [2022-07-19 21:21:34,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7257799671592775 [2022-07-19 21:21:34,217 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1768 transitions. [2022-07-19 21:21:34,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1768 transitions. [2022-07-19 21:21:34,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:34,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1768 transitions. [2022-07-19 21:21:34,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.28571428571429) internal successors, (1768), 14 states have internal predecessors, (1768), 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) [2022-07-19 21:21:34,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 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) [2022-07-19 21:21:34,225 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 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) [2022-07-19 21:21:34,225 INFO L186 Difference]: Start difference. First operand has 175 places, 158 transitions, 426 flow. Second operand 14 states and 1768 transitions. [2022-07-19 21:21:34,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 174 transitions, 610 flow [2022-07-19 21:21:34,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 174 transitions, 591 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-07-19 21:21:34,228 INFO L242 Difference]: Finished difference. Result has 182 places, 159 transitions, 451 flow [2022-07-19 21:21:34,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=451, PETRI_PLACES=182, PETRI_TRANSITIONS=159} [2022-07-19 21:21:34,230 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 27 predicate places. [2022-07-19 21:21:34,230 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 159 transitions, 451 flow [2022-07-19 21:21:34,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 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) [2022-07-19 21:21:34,231 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:34,231 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:34,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:21:34,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-19 21:21:34,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1035696176, now seen corresponding path program 1 times [2022-07-19 21:21:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:34,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354404805] [2022-07-19 21:21:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:34,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354404805] [2022-07-19 21:21:34,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354404805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:34,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:34,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:21:34,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533939951] [2022-07-19 21:21:34,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:34,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:21:34,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:21:34,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:21:34,841 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:34,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 159 transitions, 451 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:34,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:34,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:34,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:35,771 INFO L129 PetriNetUnfolder]: 2027/4160 cut-off events. [2022-07-19 21:21:35,772 INFO L130 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2022-07-19 21:21:35,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8787 conditions, 4160 events. 2027/4160 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 29629 event pairs, 539 based on Foata normal form. 0/3892 useless extension candidates. Maximal degree in co-relation 8774. Up to 1677 conditions per place. [2022-07-19 21:21:35,824 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 139 selfloop transitions, 44 changer transitions 44/320 dead transitions. [2022-07-19 21:21:35,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 320 transitions, 1313 flow [2022-07-19 21:21:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:21:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-19 21:21:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3451 transitions. [2022-07-19 21:21:35,830 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6397849462365591 [2022-07-19 21:21:35,830 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3451 transitions. [2022-07-19 21:21:35,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3451 transitions. [2022-07-19 21:21:35,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:35,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3451 transitions. [2022-07-19 21:21:35,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 111.3225806451613) internal successors, (3451), 31 states have internal predecessors, (3451), 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) [2022-07-19 21:21:35,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 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) [2022-07-19 21:21:35,844 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 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) [2022-07-19 21:21:35,845 INFO L186 Difference]: Start difference. First operand has 182 places, 159 transitions, 451 flow. Second operand 31 states and 3451 transitions. [2022-07-19 21:21:35,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 320 transitions, 1313 flow [2022-07-19 21:21:35,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 320 transitions, 1278 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-07-19 21:21:35,851 INFO L242 Difference]: Finished difference. Result has 214 places, 185 transitions, 693 flow [2022-07-19 21:21:35,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=693, PETRI_PLACES=214, PETRI_TRANSITIONS=185} [2022-07-19 21:21:35,852 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 59 predicate places. [2022-07-19 21:21:35,852 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 185 transitions, 693 flow [2022-07-19 21:21:35,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:35,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:35,863 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:35,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:21:35,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2019158248, now seen corresponding path program 2 times [2022-07-19 21:21:35,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:35,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484558244] [2022-07-19 21:21:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:35,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:36,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484558244] [2022-07-19 21:21:36,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484558244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:36,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:36,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 21:21:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811264280] [2022-07-19 21:21:36,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:21:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:36,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:21:36,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:21:36,238 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:36,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 185 transitions, 693 flow. Second operand has 20 states, 20 states have (on average 106.55) internal successors, (2131), 20 states have internal predecessors, (2131), 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) [2022-07-19 21:21:36,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:36,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:36,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:37,421 INFO L129 PetriNetUnfolder]: 2117/4258 cut-off events. [2022-07-19 21:21:37,422 INFO L130 PetriNetUnfolder]: For 4741/4759 co-relation queries the response was YES. [2022-07-19 21:21:37,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11657 conditions, 4258 events. 2117/4258 cut-off events. For 4741/4759 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 30063 event pairs, 624 based on Foata normal form. 35/4268 useless extension candidates. Maximal degree in co-relation 11631. Up to 1677 conditions per place. [2022-07-19 21:21:37,446 INFO L132 encePairwiseOnDemand]: 144/174 looper letters, 214 selfloop transitions, 76 changer transitions 1/384 dead transitions. [2022-07-19 21:21:37,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 384 transitions, 2155 flow [2022-07-19 21:21:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:21:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:21:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3893 transitions. [2022-07-19 21:21:37,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6392446633825944 [2022-07-19 21:21:37,453 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3893 transitions. [2022-07-19 21:21:37,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3893 transitions. [2022-07-19 21:21:37,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:37,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3893 transitions. [2022-07-19 21:21:37,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 111.22857142857143) internal successors, (3893), 35 states have internal predecessors, (3893), 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) [2022-07-19 21:21:37,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 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) [2022-07-19 21:21:37,468 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 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) [2022-07-19 21:21:37,468 INFO L186 Difference]: Start difference. First operand has 214 places, 185 transitions, 693 flow. Second operand 35 states and 3893 transitions. [2022-07-19 21:21:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 384 transitions, 2155 flow [2022-07-19 21:21:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 384 transitions, 2053 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-07-19 21:21:37,487 INFO L242 Difference]: Finished difference. Result has 239 places, 233 transitions, 1207 flow [2022-07-19 21:21:37,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1207, PETRI_PLACES=239, PETRI_TRANSITIONS=233} [2022-07-19 21:21:37,488 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 84 predicate places. [2022-07-19 21:21:37,489 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 233 transitions, 1207 flow [2022-07-19 21:21:37,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.55) internal successors, (2131), 20 states have internal predecessors, (2131), 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) [2022-07-19 21:21:37,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:37,489 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:21:37,489 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:37,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1430989882, now seen corresponding path program 3 times [2022-07-19 21:21:37,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:37,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978219483] [2022-07-19 21:21:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:37,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:38,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978219483] [2022-07-19 21:21:38,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978219483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:38,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:38,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:21:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224512191] [2022-07-19 21:21:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:21:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:21:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:21:38,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:21:38,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 233 transitions, 1207 flow. Second operand has 21 states, 21 states have (on average 101.57142857142857) internal successors, (2133), 21 states have internal predecessors, (2133), 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) [2022-07-19 21:21:38,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:38,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:21:38,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:39,454 INFO L129 PetriNetUnfolder]: 2144/4352 cut-off events. [2022-07-19 21:21:39,455 INFO L130 PetriNetUnfolder]: For 8280/8298 co-relation queries the response was YES. [2022-07-19 21:21:39,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13844 conditions, 4352 events. 2144/4352 cut-off events. For 8280/8298 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 31322 event pairs, 669 based on Foata normal form. 20/4348 useless extension candidates. Maximal degree in co-relation 13804. Up to 1678 conditions per place. [2022-07-19 21:21:39,483 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 147 selfloop transitions, 79 changer transitions 40/356 dead transitions. [2022-07-19 21:21:39,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 356 transitions, 2361 flow [2022-07-19 21:21:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:21:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:21:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3381 transitions. [2022-07-19 21:21:39,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6072198275862069 [2022-07-19 21:21:39,486 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3381 transitions. [2022-07-19 21:21:39,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3381 transitions. [2022-07-19 21:21:39,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:39,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3381 transitions. [2022-07-19 21:21:39,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.65625) internal successors, (3381), 32 states have internal predecessors, (3381), 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) [2022-07-19 21:21:39,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 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) [2022-07-19 21:21:39,495 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 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) [2022-07-19 21:21:39,495 INFO L186 Difference]: Start difference. First operand has 239 places, 233 transitions, 1207 flow. Second operand 32 states and 3381 transitions. [2022-07-19 21:21:39,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 356 transitions, 2361 flow [2022-07-19 21:21:39,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 356 transitions, 2277 flow, removed 16 selfloop flow, removed 17 redundant places. [2022-07-19 21:21:39,532 INFO L242 Difference]: Finished difference. Result has 264 places, 244 transitions, 1501 flow [2022-07-19 21:21:39,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1501, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2022-07-19 21:21:39,533 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 109 predicate places. [2022-07-19 21:21:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 1501 flow [2022-07-19 21:21:39,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 101.57142857142857) internal successors, (2133), 21 states have internal predecessors, (2133), 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) [2022-07-19 21:21:39,534 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:39,534 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:39,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:21:39,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2113386508, now seen corresponding path program 1 times [2022-07-19 21:21:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323336004] [2022-07-19 21:21:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:39,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323336004] [2022-07-19 21:21:39,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323336004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:39,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:39,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 21:21:39,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121112939] [2022-07-19 21:21:39,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:39,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:21:39,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:21:39,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:21:39,889 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:39,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 1501 flow. Second operand has 20 states, 20 states have (on average 106.55) internal successors, (2131), 20 states have internal predecessors, (2131), 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) [2022-07-19 21:21:39,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:39,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:39,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:41,438 INFO L129 PetriNetUnfolder]: 2837/5702 cut-off events. [2022-07-19 21:21:41,438 INFO L130 PetriNetUnfolder]: For 16087/16100 co-relation queries the response was YES. [2022-07-19 21:21:41,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19734 conditions, 5702 events. 2837/5702 cut-off events. For 16087/16100 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 43469 event pairs, 337 based on Foata normal form. 44/5715 useless extension candidates. Maximal degree in co-relation 19682. Up to 1718 conditions per place. [2022-07-19 21:21:41,486 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 266 selfloop transitions, 111 changer transitions 1/471 dead transitions. [2022-07-19 21:21:41,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 471 transitions, 3612 flow [2022-07-19 21:21:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 21:21:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-19 21:21:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4064 transitions. [2022-07-19 21:21:41,490 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.648786717752235 [2022-07-19 21:21:41,490 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4064 transitions. [2022-07-19 21:21:41,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4064 transitions. [2022-07-19 21:21:41,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:41,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4064 transitions. [2022-07-19 21:21:41,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 112.88888888888889) internal successors, (4064), 36 states have internal predecessors, (4064), 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) [2022-07-19 21:21:41,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 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) [2022-07-19 21:21:41,501 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 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) [2022-07-19 21:21:41,501 INFO L186 Difference]: Start difference. First operand has 264 places, 244 transitions, 1501 flow. Second operand 36 states and 4064 transitions. [2022-07-19 21:21:41,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 471 transitions, 3612 flow [2022-07-19 21:21:41,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 471 transitions, 3437 flow, removed 53 selfloop flow, removed 22 redundant places. [2022-07-19 21:21:41,573 INFO L242 Difference]: Finished difference. Result has 282 places, 292 transitions, 2217 flow [2022-07-19 21:21:41,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2217, PETRI_PLACES=282, PETRI_TRANSITIONS=292} [2022-07-19 21:21:41,574 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 127 predicate places. [2022-07-19 21:21:41,574 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 292 transitions, 2217 flow [2022-07-19 21:21:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.55) internal successors, (2131), 20 states have internal predecessors, (2131), 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) [2022-07-19 21:21:41,575 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:41,575 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:41,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:21:41,576 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1472592122, now seen corresponding path program 2 times [2022-07-19 21:21:41,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:41,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907378894] [2022-07-19 21:21:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:41,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:41,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907378894] [2022-07-19 21:21:41,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907378894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:41,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:41,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:21:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002172098] [2022-07-19 21:21:41,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:41,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:21:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:21:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:21:41,959 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:41,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 292 transitions, 2217 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:41,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:41,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:41,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:43,207 INFO L129 PetriNetUnfolder]: 2853/5760 cut-off events. [2022-07-19 21:21:43,208 INFO L130 PetriNetUnfolder]: For 18750/18769 co-relation queries the response was YES. [2022-07-19 21:21:43,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20795 conditions, 5760 events. 2853/5760 cut-off events. For 18750/18769 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 44206 event pairs, 720 based on Foata normal form. 10/5735 useless extension candidates. Maximal degree in co-relation 20737. Up to 2754 conditions per place. [2022-07-19 21:21:43,267 INFO L132 encePairwiseOnDemand]: 144/174 looper letters, 186 selfloop transitions, 98 changer transitions 28/405 dead transitions. [2022-07-19 21:21:43,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 405 transitions, 3568 flow [2022-07-19 21:21:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:21:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:21:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3314 transitions. [2022-07-19 21:21:43,271 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6348659003831417 [2022-07-19 21:21:43,271 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3314 transitions. [2022-07-19 21:21:43,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3314 transitions. [2022-07-19 21:21:43,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:43,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3314 transitions. [2022-07-19 21:21:43,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 110.46666666666667) internal successors, (3314), 30 states have internal predecessors, (3314), 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) [2022-07-19 21:21:43,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 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) [2022-07-19 21:21:43,281 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 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) [2022-07-19 21:21:43,281 INFO L186 Difference]: Start difference. First operand has 282 places, 292 transitions, 2217 flow. Second operand 30 states and 3314 transitions. [2022-07-19 21:21:43,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 405 transitions, 3568 flow [2022-07-19 21:21:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 405 transitions, 3423 flow, removed 51 selfloop flow, removed 15 redundant places. [2022-07-19 21:21:43,385 INFO L242 Difference]: Finished difference. Result has 301 places, 304 transitions, 2450 flow [2022-07-19 21:21:43,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2450, PETRI_PLACES=301, PETRI_TRANSITIONS=304} [2022-07-19 21:21:43,386 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 146 predicate places. [2022-07-19 21:21:43,386 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 304 transitions, 2450 flow [2022-07-19 21:21:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:43,387 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:43,387 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:43,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:21:43,387 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1133456434, now seen corresponding path program 3 times [2022-07-19 21:21:43,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:43,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729261502] [2022-07-19 21:21:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729261502] [2022-07-19 21:21:43,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729261502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:43,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:43,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:21:43,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157695014] [2022-07-19 21:21:43,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:21:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:43,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:21:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:21:43,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-07-19 21:21:43,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 304 transitions, 2450 flow. Second operand has 22 states, 22 states have (on average 97.5909090909091) internal successors, (2147), 22 states have internal predecessors, (2147), 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) [2022-07-19 21:21:43,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:43,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-07-19 21:21:43,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:45,824 INFO L129 PetriNetUnfolder]: 3451/6773 cut-off events. [2022-07-19 21:21:45,825 INFO L130 PetriNetUnfolder]: For 18981/19000 co-relation queries the response was YES. [2022-07-19 21:21:45,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23681 conditions, 6773 events. 3451/6773 cut-off events. For 18981/19000 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 53322 event pairs, 543 based on Foata normal form. 48/6787 useless extension candidates. Maximal degree in co-relation 23618. Up to 1701 conditions per place. [2022-07-19 21:21:45,884 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 243 selfloop transitions, 157 changer transitions 3/490 dead transitions. [2022-07-19 21:21:45,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 490 transitions, 4315 flow [2022-07-19 21:21:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 21:21:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-19 21:21:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3713 transitions. [2022-07-19 21:21:45,888 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5927522349936143 [2022-07-19 21:21:45,888 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3713 transitions. [2022-07-19 21:21:45,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3713 transitions. [2022-07-19 21:21:45,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:45,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3713 transitions. [2022-07-19 21:21:45,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 103.13888888888889) internal successors, (3713), 36 states have internal predecessors, (3713), 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) [2022-07-19 21:21:45,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 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) [2022-07-19 21:21:45,902 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 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) [2022-07-19 21:21:45,902 INFO L186 Difference]: Start difference. First operand has 301 places, 304 transitions, 2450 flow. Second operand 36 states and 3713 transitions. [2022-07-19 21:21:45,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 490 transitions, 4315 flow [2022-07-19 21:21:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 490 transitions, 4108 flow, removed 33 selfloop flow, removed 23 redundant places. [2022-07-19 21:21:46,101 INFO L242 Difference]: Finished difference. Result has 317 places, 333 transitions, 3063 flow [2022-07-19 21:21:46,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3063, PETRI_PLACES=317, PETRI_TRANSITIONS=333} [2022-07-19 21:21:46,101 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 162 predicate places. [2022-07-19 21:21:46,102 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 333 transitions, 3063 flow [2022-07-19 21:21:46,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 97.5909090909091) internal successors, (2147), 22 states have internal predecessors, (2147), 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) [2022-07-19 21:21:46,102 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:46,102 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:21:46,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1562019108, now seen corresponding path program 4 times [2022-07-19 21:21:46,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:46,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98885196] [2022-07-19 21:21:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:46,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:46,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:46,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98885196] [2022-07-19 21:21:46,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98885196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:46,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:46,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:21:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32435431] [2022-07-19 21:21:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:21:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:21:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:21:46,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:46,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 333 transitions, 3063 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:46,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:46,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:46,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:47,897 INFO L129 PetriNetUnfolder]: 3548/7008 cut-off events. [2022-07-19 21:21:47,897 INFO L130 PetriNetUnfolder]: For 27000/27019 co-relation queries the response was YES. [2022-07-19 21:21:47,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26374 conditions, 7008 events. 3548/7008 cut-off events. For 27000/27019 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 55486 event pairs, 1163 based on Foata normal form. 12/6971 useless extension candidates. Maximal degree in co-relation 26307. Up to 3808 conditions per place. [2022-07-19 21:21:47,946 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 196 selfloop transitions, 154 changer transitions 0/443 dead transitions. [2022-07-19 21:21:47,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 443 transitions, 4663 flow [2022-07-19 21:21:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:21:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:21:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3216 transitions. [2022-07-19 21:21:47,949 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6373365041617123 [2022-07-19 21:21:47,949 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3216 transitions. [2022-07-19 21:21:47,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3216 transitions. [2022-07-19 21:21:47,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:47,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3216 transitions. [2022-07-19 21:21:47,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 110.89655172413794) internal successors, (3216), 29 states have internal predecessors, (3216), 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) [2022-07-19 21:21:47,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:47,957 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:47,957 INFO L186 Difference]: Start difference. First operand has 317 places, 333 transitions, 3063 flow. Second operand 29 states and 3216 transitions. [2022-07-19 21:21:47,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 443 transitions, 4663 flow [2022-07-19 21:21:48,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 443 transitions, 4531 flow, removed 32 selfloop flow, removed 18 redundant places. [2022-07-19 21:21:48,084 INFO L242 Difference]: Finished difference. Result has 334 places, 364 transitions, 3858 flow [2022-07-19 21:21:48,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3858, PETRI_PLACES=334, PETRI_TRANSITIONS=364} [2022-07-19 21:21:48,085 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 179 predicate places. [2022-07-19 21:21:48,085 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 364 transitions, 3858 flow [2022-07-19 21:21:48,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:48,086 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:48,086 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:21:48,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1785868166, now seen corresponding path program 5 times [2022-07-19 21:21:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:48,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569864491] [2022-07-19 21:21:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:48,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569864491] [2022-07-19 21:21:48,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569864491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:48,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:48,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:21:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094560058] [2022-07-19 21:21:48,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:48,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:21:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:48,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:21:48,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:21:48,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:48,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 364 transitions, 3858 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:48,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:48,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:48,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:49,849 INFO L129 PetriNetUnfolder]: 3659/7154 cut-off events. [2022-07-19 21:21:49,849 INFO L130 PetriNetUnfolder]: For 27042/27061 co-relation queries the response was YES. [2022-07-19 21:21:49,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27322 conditions, 7154 events. 3659/7154 cut-off events. For 27042/27061 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 56519 event pairs, 1384 based on Foata normal form. 16/7120 useless extension candidates. Maximal degree in co-relation 27249. Up to 3808 conditions per place. [2022-07-19 21:21:49,912 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 231 selfloop transitions, 154 changer transitions 0/478 dead transitions. [2022-07-19 21:21:49,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 478 transitions, 5677 flow [2022-07-19 21:21:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:21:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:21:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3225 transitions. [2022-07-19 21:21:49,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6391200951248514 [2022-07-19 21:21:49,915 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3225 transitions. [2022-07-19 21:21:49,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3225 transitions. [2022-07-19 21:21:49,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:49,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3225 transitions. [2022-07-19 21:21:49,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.20689655172414) internal successors, (3225), 29 states have internal predecessors, (3225), 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) [2022-07-19 21:21:49,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:49,923 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:49,923 INFO L186 Difference]: Start difference. First operand has 334 places, 364 transitions, 3858 flow. Second operand 29 states and 3225 transitions. [2022-07-19 21:21:49,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 478 transitions, 5677 flow [2022-07-19 21:21:50,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 478 transitions, 5547 flow, removed 4 selfloop flow, removed 18 redundant places. [2022-07-19 21:21:50,206 INFO L242 Difference]: Finished difference. Result has 353 places, 401 transitions, 4820 flow [2022-07-19 21:21:50,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4820, PETRI_PLACES=353, PETRI_TRANSITIONS=401} [2022-07-19 21:21:50,207 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 198 predicate places. [2022-07-19 21:21:50,207 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 401 transitions, 4820 flow [2022-07-19 21:21:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:50,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:50,208 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:50,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:21:50,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1680799936, now seen corresponding path program 6 times [2022-07-19 21:21:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:50,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819669749] [2022-07-19 21:21:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:50,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819669749] [2022-07-19 21:21:50,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819669749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:50,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:50,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:21:50,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425712307] [2022-07-19 21:21:50,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:50,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:21:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:50,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:21:50,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:21:50,557 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:50,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 401 transitions, 4820 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:50,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:50,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:50,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:52,395 INFO L129 PetriNetUnfolder]: 3671/7210 cut-off events. [2022-07-19 21:21:52,395 INFO L130 PetriNetUnfolder]: For 32094/32113 co-relation queries the response was YES. [2022-07-19 21:21:52,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28103 conditions, 7210 events. 3671/7210 cut-off events. For 32094/32113 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 57034 event pairs, 1341 based on Foata normal form. 12/7176 useless extension candidates. Maximal degree in co-relation 28021. Up to 3808 conditions per place. [2022-07-19 21:21:52,455 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 211 selfloop transitions, 183 changer transitions 1/488 dead transitions. [2022-07-19 21:21:52,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 488 transitions, 6259 flow [2022-07-19 21:21:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:21:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:21:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3216 transitions. [2022-07-19 21:21:52,458 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6373365041617123 [2022-07-19 21:21:52,458 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3216 transitions. [2022-07-19 21:21:52,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3216 transitions. [2022-07-19 21:21:52,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:52,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3216 transitions. [2022-07-19 21:21:52,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 110.89655172413794) internal successors, (3216), 29 states have internal predecessors, (3216), 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) [2022-07-19 21:21:52,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:52,466 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:52,466 INFO L186 Difference]: Start difference. First operand has 353 places, 401 transitions, 4820 flow. Second operand 29 states and 3216 transitions. [2022-07-19 21:21:52,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 488 transitions, 6259 flow [2022-07-19 21:21:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 488 transitions, 6033 flow, removed 29 selfloop flow, removed 18 redundant places. [2022-07-19 21:21:52,618 INFO L242 Difference]: Finished difference. Result has 370 places, 410 transitions, 5279 flow [2022-07-19 21:21:52,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5279, PETRI_PLACES=370, PETRI_TRANSITIONS=410} [2022-07-19 21:21:52,619 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 215 predicate places. [2022-07-19 21:21:52,619 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 410 transitions, 5279 flow [2022-07-19 21:21:52,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:52,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:52,620 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:52,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:21:52,620 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash -403227108, now seen corresponding path program 4 times [2022-07-19 21:21:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:52,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744420270] [2022-07-19 21:21:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:52,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:52,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744420270] [2022-07-19 21:21:52,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744420270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:21:52,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:21:52,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:21:52,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589553679] [2022-07-19 21:21:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:21:52,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:21:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:21:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:21:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:21:52,952 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-07-19 21:21:52,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 410 transitions, 5279 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:52,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:21:52,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-07-19 21:21:52,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:21:54,688 INFO L129 PetriNetUnfolder]: 3672/7214 cut-off events. [2022-07-19 21:21:54,688 INFO L130 PetriNetUnfolder]: For 35564/35583 co-relation queries the response was YES. [2022-07-19 21:21:54,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28655 conditions, 7214 events. 3672/7214 cut-off events. For 35564/35583 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 57214 event pairs, 1367 based on Foata normal form. 14/7185 useless extension candidates. Maximal degree in co-relation 28568. Up to 3808 conditions per place. [2022-07-19 21:21:54,754 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 246 selfloop transitions, 133 changer transitions 12/484 dead transitions. [2022-07-19 21:21:54,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 484 transitions, 6531 flow [2022-07-19 21:21:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:21:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:21:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3205 transitions. [2022-07-19 21:21:54,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6351565596512089 [2022-07-19 21:21:54,757 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3205 transitions. [2022-07-19 21:21:54,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3205 transitions. [2022-07-19 21:21:54,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:21:54,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3205 transitions. [2022-07-19 21:21:54,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 110.51724137931035) internal successors, (3205), 29 states have internal predecessors, (3205), 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) [2022-07-19 21:21:54,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:54,766 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:21:54,766 INFO L186 Difference]: Start difference. First operand has 370 places, 410 transitions, 5279 flow. Second operand 29 states and 3205 transitions. [2022-07-19 21:21:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 484 transitions, 6531 flow [2022-07-19 21:21:54,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 484 transitions, 6305 flow, removed 34 selfloop flow, removed 24 redundant places. [2022-07-19 21:21:54,934 INFO L242 Difference]: Finished difference. Result has 379 places, 413 transitions, 5410 flow [2022-07-19 21:21:54,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5410, PETRI_PLACES=379, PETRI_TRANSITIONS=413} [2022-07-19 21:21:54,935 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 224 predicate places. [2022-07-19 21:21:54,935 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 413 transitions, 5410 flow [2022-07-19 21:21:54,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 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) [2022-07-19 21:21:54,935 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:21:54,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:21:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:21:54,936 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:21:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:21:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1821375558, now seen corresponding path program 5 times [2022-07-19 21:21:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:21:54,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315478716] [2022-07-19 21:21:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:21:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:21:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:21:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:21:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:21:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315478716] [2022-07-19 21:21:55,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315478716] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:21:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710577744] [2022-07-19 21:21:55,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 21:21:55,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:21:55,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:21:55,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:21:55,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:21:55,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:21:55,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:21:55,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-19 21:21:55,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:21:55,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:21:55,616 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:21:55,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-19 21:21:55,764 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-19 21:21:55,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-07-19 21:21:55,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:21:56,330 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-07-19 21:21:56,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-07-19 21:21:56,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:21:56,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:21:57,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 23 [2022-07-19 21:21:57,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-07-19 21:21:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:21:57,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:21:58,413 INFO L356 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-07-19 21:21:58,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 88 [2022-07-19 21:21:58,496 INFO L356 Elim1Store]: treesize reduction 39, result has 76.1 percent of original size [2022-07-19 21:21:58,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 878 treesize of output 853 [2022-07-19 21:21:58,536 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:21:58,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 712 treesize of output 696 [2022-07-19 21:21:58,563 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:21:58,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 566 treesize of output 420 [2022-07-19 21:22:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:03,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710577744] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:22:03,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:22:03,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 26] total 65 [2022-07-19 21:22:03,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870740965] [2022-07-19 21:22:03,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:22:03,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-19 21:22:03,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:03,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-19 21:22:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=3696, Unknown=95, NotChecked=0, Total=4160 [2022-07-19 21:22:03,328 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 174 [2022-07-19 21:22:03,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 413 transitions, 5410 flow. Second operand has 65 states, 65 states have (on average 86.58461538461539) internal successors, (5628), 65 states have internal predecessors, (5628), 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) [2022-07-19 21:22:03,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:03,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 174 [2022-07-19 21:22:03,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:07,845 INFO L129 PetriNetUnfolder]: 3542/6859 cut-off events. [2022-07-19 21:22:07,845 INFO L130 PetriNetUnfolder]: For 35721/35740 co-relation queries the response was YES. [2022-07-19 21:22:07,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27809 conditions, 6859 events. 3542/6859 cut-off events. For 35721/35740 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 53037 event pairs, 407 based on Foata normal form. 40/6873 useless extension candidates. Maximal degree in co-relation 27725. Up to 1819 conditions per place. [2022-07-19 21:22:07,904 INFO L132 encePairwiseOnDemand]: 137/174 looper letters, 299 selfloop transitions, 245 changer transitions 4/621 dead transitions. [2022-07-19 21:22:07,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 621 transitions, 7708 flow [2022-07-19 21:22:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 21:22:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-07-19 21:22:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4378 transitions. [2022-07-19 21:22:07,908 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5241858237547893 [2022-07-19 21:22:07,908 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4378 transitions. [2022-07-19 21:22:07,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4378 transitions. [2022-07-19 21:22:07,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:07,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4378 transitions. [2022-07-19 21:22:07,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 91.20833333333333) internal successors, (4378), 48 states have internal predecessors, (4378), 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) [2022-07-19 21:22:07,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 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) [2022-07-19 21:22:07,921 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 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) [2022-07-19 21:22:07,921 INFO L186 Difference]: Start difference. First operand has 379 places, 413 transitions, 5410 flow. Second operand 48 states and 4378 transitions. [2022-07-19 21:22:07,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 621 transitions, 7708 flow [2022-07-19 21:22:08,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 621 transitions, 7543 flow, removed 24 selfloop flow, removed 21 redundant places. [2022-07-19 21:22:08,192 INFO L242 Difference]: Finished difference. Result has 406 places, 424 transitions, 5992 flow [2022-07-19 21:22:08,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5992, PETRI_PLACES=406, PETRI_TRANSITIONS=424} [2022-07-19 21:22:08,193 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 251 predicate places. [2022-07-19 21:22:08,193 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 424 transitions, 5992 flow [2022-07-19 21:22:08,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 86.58461538461539) internal successors, (5628), 65 states have internal predecessors, (5628), 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) [2022-07-19 21:22:08,194 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:08,194 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:08,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 21:22:08,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:22:08,409 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1841134454, now seen corresponding path program 7 times [2022-07-19 21:22:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477252675] [2022-07-19 21:22:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477252675] [2022-07-19 21:22:08,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477252675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:08,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:08,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506618731] [2022-07-19 21:22:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:08,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:08,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:08,951 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-07-19 21:22:08,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 424 transitions, 5992 flow. Second operand has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:08,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:08,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-07-19 21:22:08,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:10,950 INFO L129 PetriNetUnfolder]: 3656/7069 cut-off events. [2022-07-19 21:22:10,950 INFO L130 PetriNetUnfolder]: For 46552/46571 co-relation queries the response was YES. [2022-07-19 21:22:10,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31093 conditions, 7069 events. 3656/7069 cut-off events. For 46552/46571 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 54851 event pairs, 1105 based on Foata normal form. 32/7054 useless extension candidates. Maximal degree in co-relation 31010. Up to 3604 conditions per place. [2022-07-19 21:22:11,013 INFO L132 encePairwiseOnDemand]: 141/174 looper letters, 243 selfloop transitions, 211 changer transitions 0/541 dead transitions. [2022-07-19 21:22:11,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 541 transitions, 8276 flow [2022-07-19 21:22:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:22:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:22:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2660 transitions. [2022-07-19 21:22:11,017 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5879752431476569 [2022-07-19 21:22:11,017 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2660 transitions. [2022-07-19 21:22:11,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2660 transitions. [2022-07-19 21:22:11,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:11,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2660 transitions. [2022-07-19 21:22:11,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 102.3076923076923) internal successors, (2660), 26 states have internal predecessors, (2660), 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) [2022-07-19 21:22:11,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 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) [2022-07-19 21:22:11,023 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 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) [2022-07-19 21:22:11,023 INFO L186 Difference]: Start difference. First operand has 406 places, 424 transitions, 5992 flow. Second operand 26 states and 2660 transitions. [2022-07-19 21:22:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 541 transitions, 8276 flow [2022-07-19 21:22:11,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 541 transitions, 7491 flow, removed 28 selfloop flow, removed 41 redundant places. [2022-07-19 21:22:11,230 INFO L242 Difference]: Finished difference. Result has 396 places, 472 transitions, 6886 flow [2022-07-19 21:22:11,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6886, PETRI_PLACES=396, PETRI_TRANSITIONS=472} [2022-07-19 21:22:11,231 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 241 predicate places. [2022-07-19 21:22:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 472 transitions, 6886 flow [2022-07-19 21:22:11,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:11,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:11,232 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:22:11,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:11,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash 773073508, now seen corresponding path program 6 times [2022-07-19 21:22:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:11,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591675574] [2022-07-19 21:22:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591675574] [2022-07-19 21:22:11,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591675574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:11,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:11,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377201490] [2022-07-19 21:22:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:11,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:11,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:11,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-07-19 21:22:11,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 472 transitions, 6886 flow. Second operand has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:11,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:11,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-07-19 21:22:11,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:13,708 INFO L129 PetriNetUnfolder]: 3618/7019 cut-off events. [2022-07-19 21:22:13,708 INFO L130 PetriNetUnfolder]: For 41717/41736 co-relation queries the response was YES. [2022-07-19 21:22:13,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29835 conditions, 7019 events. 3618/7019 cut-off events. For 41717/41736 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54791 event pairs, 1110 based on Foata normal form. 28/7001 useless extension candidates. Maximal degree in co-relation 29749. Up to 3604 conditions per place. [2022-07-19 21:22:13,763 INFO L132 encePairwiseOnDemand]: 141/174 looper letters, 259 selfloop transitions, 177 changer transitions 7/530 dead transitions. [2022-07-19 21:22:13,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 530 transitions, 7909 flow [2022-07-19 21:22:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:22:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:22:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2650 transitions. [2022-07-19 21:22:13,765 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5857648099027409 [2022-07-19 21:22:13,765 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2650 transitions. [2022-07-19 21:22:13,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2650 transitions. [2022-07-19 21:22:13,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:13,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2650 transitions. [2022-07-19 21:22:13,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 101.92307692307692) internal successors, (2650), 26 states have internal predecessors, (2650), 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) [2022-07-19 21:22:13,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 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) [2022-07-19 21:22:13,770 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 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) [2022-07-19 21:22:13,770 INFO L186 Difference]: Start difference. First operand has 396 places, 472 transitions, 6886 flow. Second operand 26 states and 2650 transitions. [2022-07-19 21:22:13,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 530 transitions, 7909 flow [2022-07-19 21:22:13,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 530 transitions, 7654 flow, removed 19 selfloop flow, removed 21 redundant places. [2022-07-19 21:22:13,942 INFO L242 Difference]: Finished difference. Result has 403 places, 462 transitions, 6788 flow [2022-07-19 21:22:13,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6369, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6788, PETRI_PLACES=403, PETRI_TRANSITIONS=462} [2022-07-19 21:22:13,943 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 248 predicate places. [2022-07-19 21:22:13,943 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 462 transitions, 6788 flow [2022-07-19 21:22:13,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:13,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:13,944 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:13,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:22:13,944 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1869552764, now seen corresponding path program 7 times [2022-07-19 21:22:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:13,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719616104] [2022-07-19 21:22:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719616104] [2022-07-19 21:22:14,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719616104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:14,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:14,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:22:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235765197] [2022-07-19 21:22:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:22:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:22:14,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:22:14,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:22:14,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 462 transitions, 6788 flow. Second operand has 22 states, 22 states have (on average 101.45454545454545) internal successors, (2232), 22 states have internal predecessors, (2232), 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) [2022-07-19 21:22:14,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:14,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:22:14,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:16,762 INFO L129 PetriNetUnfolder]: 4296/8239 cut-off events. [2022-07-19 21:22:16,763 INFO L130 PetriNetUnfolder]: For 50387/50406 co-relation queries the response was YES. [2022-07-19 21:22:16,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35148 conditions, 8239 events. 4296/8239 cut-off events. For 50387/50406 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 66052 event pairs, 1137 based on Foata normal form. 76/8262 useless extension candidates. Maximal degree in co-relation 35061. Up to 3709 conditions per place. [2022-07-19 21:22:16,845 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 280 selfloop transitions, 244 changer transitions 0/614 dead transitions. [2022-07-19 21:22:16,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 614 transitions, 9013 flow [2022-07-19 21:22:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:22:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:22:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3516 transitions. [2022-07-19 21:22:16,850 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6123301985370951 [2022-07-19 21:22:16,850 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3516 transitions. [2022-07-19 21:22:16,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3516 transitions. [2022-07-19 21:22:16,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:16,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3516 transitions. [2022-07-19 21:22:16,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.54545454545455) internal successors, (3516), 33 states have internal predecessors, (3516), 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) [2022-07-19 21:22:16,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 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) [2022-07-19 21:22:16,857 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 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) [2022-07-19 21:22:16,857 INFO L186 Difference]: Start difference. First operand has 403 places, 462 transitions, 6788 flow. Second operand 33 states and 3516 transitions. [2022-07-19 21:22:16,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 614 transitions, 9013 flow [2022-07-19 21:22:17,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 614 transitions, 8748 flow, removed 4 selfloop flow, removed 20 redundant places. [2022-07-19 21:22:17,141 INFO L242 Difference]: Finished difference. Result has 420 places, 495 transitions, 7676 flow [2022-07-19 21:22:17,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6548, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7676, PETRI_PLACES=420, PETRI_TRANSITIONS=495} [2022-07-19 21:22:17,142 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 265 predicate places. [2022-07-19 21:22:17,142 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 495 transitions, 7676 flow [2022-07-19 21:22:17,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 101.45454545454545) internal successors, (2232), 22 states have internal predecessors, (2232), 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) [2022-07-19 21:22:17,143 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:17,143 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:17,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:22:17,143 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:17,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 397189860, now seen corresponding path program 8 times [2022-07-19 21:22:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:17,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284346275] [2022-07-19 21:22:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284346275] [2022-07-19 21:22:17,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284346275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:17,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:17,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72782121] [2022-07-19 21:22:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:17,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-07-19 21:22:17,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 495 transitions, 7676 flow. Second operand has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:17,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:17,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-07-19 21:22:17,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:19,910 INFO L129 PetriNetUnfolder]: 4266/8200 cut-off events. [2022-07-19 21:22:19,910 INFO L130 PetriNetUnfolder]: For 55803/55822 co-relation queries the response was YES. [2022-07-19 21:22:19,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36496 conditions, 8200 events. 4266/8200 cut-off events. For 55803/55822 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 66059 event pairs, 1248 based on Foata normal form. 20/8157 useless extension candidates. Maximal degree in co-relation 36405. Up to 4560 conditions per place. [2022-07-19 21:22:19,982 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 237 selfloop transitions, 231 changer transitions 0/555 dead transitions. [2022-07-19 21:22:19,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 555 transitions, 8848 flow [2022-07-19 21:22:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:22:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:22:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2749 transitions. [2022-07-19 21:22:19,984 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5851426138782461 [2022-07-19 21:22:19,984 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2749 transitions. [2022-07-19 21:22:19,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2749 transitions. [2022-07-19 21:22:19,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:19,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2749 transitions. [2022-07-19 21:22:19,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 101.81481481481481) internal successors, (2749), 27 states have internal predecessors, (2749), 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) [2022-07-19 21:22:19,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 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) [2022-07-19 21:22:19,989 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 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) [2022-07-19 21:22:19,989 INFO L186 Difference]: Start difference. First operand has 420 places, 495 transitions, 7676 flow. Second operand 27 states and 2749 transitions. [2022-07-19 21:22:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 555 transitions, 8848 flow [2022-07-19 21:22:20,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 555 transitions, 8618 flow, removed 15 selfloop flow, removed 21 redundant places. [2022-07-19 21:22:20,234 INFO L242 Difference]: Finished difference. Result has 426 places, 492 transitions, 7866 flow [2022-07-19 21:22:20,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7364, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7866, PETRI_PLACES=426, PETRI_TRANSITIONS=492} [2022-07-19 21:22:20,234 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 271 predicate places. [2022-07-19 21:22:20,235 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 492 transitions, 7866 flow [2022-07-19 21:22:20,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:20,235 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:20,235 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:22:20,235 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -714716454, now seen corresponding path program 9 times [2022-07-19 21:22:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:20,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402192102] [2022-07-19 21:22:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402192102] [2022-07-19 21:22:20,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402192102] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:22:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452167781] [2022-07-19 21:22:20,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:22:20,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:22:20,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:22:20,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:22:20,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:22:20,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 21:22:20,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:22:20,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-19 21:22:20,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:22:20,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:22:21,055 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 21:22:21,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-19 21:22:21,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:22:21,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:22:21,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:21,948 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 21:22:21,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-07-19 21:22:22,040 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:22:22,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2022-07-19 21:22:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:22:22,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:22:22,540 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:22:22,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 70 [2022-07-19 21:22:22,586 INFO L356 Elim1Store]: treesize reduction 39, result has 64.2 percent of original size [2022-07-19 21:22:22,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 924 treesize of output 833 [2022-07-19 21:22:22,605 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:22:22,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 694 treesize of output 518 [2022-07-19 21:22:22,643 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:22:22,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 572 treesize of output 548 [2022-07-19 21:22:24,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 21:22:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:22:24,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452167781] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:22:24,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:22:24,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 23] total 61 [2022-07-19 21:22:24,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484445791] [2022-07-19 21:22:24,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:22:24,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-19 21:22:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:24,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-19 21:22:24,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=3322, Unknown=26, NotChecked=0, Total=3660 [2022-07-19 21:22:24,277 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 174 [2022-07-19 21:22:24,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 492 transitions, 7866 flow. Second operand has 61 states, 61 states have (on average 86.70491803278688) internal successors, (5289), 61 states have internal predecessors, (5289), 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) [2022-07-19 21:22:24,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:24,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 174 [2022-07-19 21:22:24,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:28,678 INFO L129 PetriNetUnfolder]: 4541/8748 cut-off events. [2022-07-19 21:22:28,678 INFO L130 PetriNetUnfolder]: For 61914/61933 co-relation queries the response was YES. [2022-07-19 21:22:28,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39634 conditions, 8748 events. 4541/8748 cut-off events. For 61914/61933 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 71586 event pairs, 901 based on Foata normal form. 68/8766 useless extension candidates. Maximal degree in co-relation 39544. Up to 3466 conditions per place. [2022-07-19 21:22:28,760 INFO L132 encePairwiseOnDemand]: 133/174 looper letters, 315 selfloop transitions, 366 changer transitions 2/756 dead transitions. [2022-07-19 21:22:28,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 756 transitions, 11354 flow [2022-07-19 21:22:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-19 21:22:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-07-19 21:22:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4626 transitions. [2022-07-19 21:22:28,763 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5212981744421906 [2022-07-19 21:22:28,764 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4626 transitions. [2022-07-19 21:22:28,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4626 transitions. [2022-07-19 21:22:28,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:28,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4626 transitions. [2022-07-19 21:22:28,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 90.70588235294117) internal successors, (4626), 51 states have internal predecessors, (4626), 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) [2022-07-19 21:22:28,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 174.0) internal successors, (9048), 52 states have internal predecessors, (9048), 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) [2022-07-19 21:22:28,773 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 174.0) internal successors, (9048), 52 states have internal predecessors, (9048), 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) [2022-07-19 21:22:28,774 INFO L186 Difference]: Start difference. First operand has 426 places, 492 transitions, 7866 flow. Second operand 51 states and 4626 transitions. [2022-07-19 21:22:28,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 756 transitions, 11354 flow [2022-07-19 21:22:29,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 756 transitions, 11042 flow, removed 2 selfloop flow, removed 22 redundant places. [2022-07-19 21:22:29,034 INFO L242 Difference]: Finished difference. Result has 465 places, 597 transitions, 9896 flow [2022-07-19 21:22:29,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=9896, PETRI_PLACES=465, PETRI_TRANSITIONS=597} [2022-07-19 21:22:29,035 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 310 predicate places. [2022-07-19 21:22:29,035 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 597 transitions, 9896 flow [2022-07-19 21:22:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 86.70491803278688) internal successors, (5289), 61 states have internal predecessors, (5289), 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) [2022-07-19 21:22:29,035 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:29,036 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:29,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 21:22:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:22:29,240 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1230885854, now seen corresponding path program 8 times [2022-07-19 21:22:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:29,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507447586] [2022-07-19 21:22:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:29,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:29,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507447586] [2022-07-19 21:22:29,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507447586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:29,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:29,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455982762] [2022-07-19 21:22:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:29,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:29,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:29,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-07-19 21:22:29,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 597 transitions, 9896 flow. Second operand has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:29,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:29,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-07-19 21:22:29,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:32,321 INFO L129 PetriNetUnfolder]: 4573/8856 cut-off events. [2022-07-19 21:22:32,322 INFO L130 PetriNetUnfolder]: For 75078/75097 co-relation queries the response was YES. [2022-07-19 21:22:32,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44739 conditions, 8856 events. 4573/8856 cut-off events. For 75078/75097 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 72998 event pairs, 1188 based on Foata normal form. 20/8797 useless extension candidates. Maximal degree in co-relation 44638. Up to 4799 conditions per place. [2022-07-19 21:22:32,409 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 362 selfloop transitions, 204 changer transitions 15/668 dead transitions. [2022-07-19 21:22:32,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 668 transitions, 11568 flow [2022-07-19 21:22:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:22:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:22:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2938 transitions. [2022-07-19 21:22:32,412 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5822433610780816 [2022-07-19 21:22:32,412 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2938 transitions. [2022-07-19 21:22:32,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2938 transitions. [2022-07-19 21:22:32,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:32,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2938 transitions. [2022-07-19 21:22:32,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 101.3103448275862) internal successors, (2938), 29 states have internal predecessors, (2938), 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) [2022-07-19 21:22:32,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:22:32,418 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:22:32,418 INFO L186 Difference]: Start difference. First operand has 465 places, 597 transitions, 9896 flow. Second operand 29 states and 2938 transitions. [2022-07-19 21:22:32,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 668 transitions, 11568 flow [2022-07-19 21:22:32,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 668 transitions, 10490 flow, removed 105 selfloop flow, removed 37 redundant places. [2022-07-19 21:22:32,881 INFO L242 Difference]: Finished difference. Result has 458 places, 592 transitions, 9169 flow [2022-07-19 21:22:32,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8830, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9169, PETRI_PLACES=458, PETRI_TRANSITIONS=592} [2022-07-19 21:22:32,881 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 303 predicate places. [2022-07-19 21:22:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 592 transitions, 9169 flow [2022-07-19 21:22:32,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 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) [2022-07-19 21:22:32,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:32,882 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:22:32,882 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2117038966, now seen corresponding path program 9 times [2022-07-19 21:22:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:32,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863765833] [2022-07-19 21:22:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:33,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863765833] [2022-07-19 21:22:33,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863765833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:33,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:33,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984712037] [2022-07-19 21:22:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:33,292 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:22:33,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 592 transitions, 9169 flow. Second operand has 21 states, 21 states have (on average 101.57142857142857) internal successors, (2133), 21 states have internal predecessors, (2133), 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) [2022-07-19 21:22:33,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:33,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:22:33,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:35,618 INFO L129 PetriNetUnfolder]: 4525/8766 cut-off events. [2022-07-19 21:22:35,618 INFO L130 PetriNetUnfolder]: For 64568/64587 co-relation queries the response was YES. [2022-07-19 21:22:35,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41311 conditions, 8766 events. 4525/8766 cut-off events. For 64568/64587 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 72051 event pairs, 1248 based on Foata normal form. 20/8709 useless extension candidates. Maximal degree in co-relation 41211. Up to 4796 conditions per place. [2022-07-19 21:22:35,701 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 348 selfloop transitions, 205 changer transitions 9/652 dead transitions. [2022-07-19 21:22:35,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 652 transitions, 10668 flow [2022-07-19 21:22:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:22:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:22:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2845 transitions. [2022-07-19 21:22:35,704 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6055768412090251 [2022-07-19 21:22:35,704 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2845 transitions. [2022-07-19 21:22:35,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2845 transitions. [2022-07-19 21:22:35,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:35,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2845 transitions. [2022-07-19 21:22:35,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 105.37037037037037) internal successors, (2845), 27 states have internal predecessors, (2845), 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) [2022-07-19 21:22:35,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 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) [2022-07-19 21:22:35,709 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 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) [2022-07-19 21:22:35,709 INFO L186 Difference]: Start difference. First operand has 458 places, 592 transitions, 9169 flow. Second operand 27 states and 2845 transitions. [2022-07-19 21:22:35,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 652 transitions, 10668 flow [2022-07-19 21:22:36,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 652 transitions, 10428 flow, removed 9 selfloop flow, removed 26 redundant places. [2022-07-19 21:22:36,104 INFO L242 Difference]: Finished difference. Result has 456 places, 587 transitions, 9257 flow [2022-07-19 21:22:36,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8909, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9257, PETRI_PLACES=456, PETRI_TRANSITIONS=587} [2022-07-19 21:22:36,105 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 301 predicate places. [2022-07-19 21:22:36,105 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 587 transitions, 9257 flow [2022-07-19 21:22:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 101.57142857142857) internal successors, (2133), 21 states have internal predecessors, (2133), 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) [2022-07-19 21:22:36,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:36,106 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:22:36,106 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1845315764, now seen corresponding path program 10 times [2022-07-19 21:22:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:36,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52217587] [2022-07-19 21:22:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52217587] [2022-07-19 21:22:36,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52217587] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:22:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802889751] [2022-07-19 21:22:36,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 21:22:36,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:22:36,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:22:36,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:22:36,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:22:36,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 21:22:36,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:22:36,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-19 21:22:36,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:22:36,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:22:36,756 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:22:36,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-19 21:22:36,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:36,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:36,974 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 21:22:36,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 25 [2022-07-19 21:22:37,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:22:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:37,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:37,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:37,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:37,593 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-19 21:22:37,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 17 [2022-07-19 21:22:37,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:22:37,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:22:38,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:38,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:22:38,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-19 21:22:38,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-07-19 21:22:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:38,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:22:38,794 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| Int) (v_ArrVal_515 (Array Int Int)) (v_ArrVal_514 (Array Int Int)) (v_ArrVal_513 Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_513)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_514))) (or (not (let ((.cse0 (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_515)) (.cse1 (* c_~i_BA~0 4))) (= (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (let ((.cse3 (* c_~i_AB~0 4))) (= (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3)) (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse3))))))) is different from false [2022-07-19 21:22:38,832 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| Int) (v_ArrVal_515 (Array Int Int)) (v_ArrVal_514 (Array Int Int)) (v_ArrVal_513 Int)) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| v_ArrVal_513)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_514))) (or (let ((.cse1 (* c_~i_AB~0 4))) (= (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse1)))) (not (let ((.cse2 (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_515)) (.cse3 (* c_~i_BA~0 4))) (= (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse3 |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3)))))))) is different from false [2022-07-19 21:22:38,848 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| Int) (v_ArrVal_515 (Array Int Int)) (v_ArrVal_514 (Array Int Int)) (v_ArrVal_513 Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base|) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| v_ArrVal_513)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_514))) (or (not (let ((.cse0 (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_515)) (.cse1 (* c_~i_BA~0 4))) (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base|) (+ .cse1 |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1))))) (let ((.cse3 (* c_~i_AB~0 4))) (= (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_#t~malloc17#1.base|) (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse3)) (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3))))))) is different from false [2022-07-19 21:22:39,422 INFO L356 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-07-19 21:22:39,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 186 treesize of output 92 [2022-07-19 21:22:39,503 INFO L356 Elim1Store]: treesize reduction 47, result has 73.7 percent of original size [2022-07-19 21:22:39,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1842 treesize of output 1677 [2022-07-19 21:22:39,540 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:22:39,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1528 treesize of output 1408 [2022-07-19 21:22:39,563 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:22:39,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1270 treesize of output 903 [2022-07-19 21:22:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-19 21:22:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802889751] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:22:40,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:22:40,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 26] total 65 [2022-07-19 21:22:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053445131] [2022-07-19 21:22:40,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:22:40,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-19 21:22:40,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-19 21:22:40,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=3327, Unknown=88, NotChecked=366, Total=4160 [2022-07-19 21:22:40,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 174 [2022-07-19 21:22:40,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 587 transitions, 9257 flow. Second operand has 65 states, 65 states have (on average 86.50769230769231) internal successors, (5623), 65 states have internal predecessors, (5623), 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) [2022-07-19 21:22:40,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:40,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 174 [2022-07-19 21:22:40,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:46,443 INFO L129 PetriNetUnfolder]: 4722/9081 cut-off events. [2022-07-19 21:22:46,444 INFO L130 PetriNetUnfolder]: For 70039/70058 co-relation queries the response was YES. [2022-07-19 21:22:46,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42970 conditions, 9081 events. 4722/9081 cut-off events. For 70039/70058 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 74673 event pairs, 1098 based on Foata normal form. 36/9042 useless extension candidates. Maximal degree in co-relation 42872. Up to 4503 conditions per place. [2022-07-19 21:22:46,525 INFO L132 encePairwiseOnDemand]: 134/174 looper letters, 411 selfloop transitions, 274 changer transitions 1/759 dead transitions. [2022-07-19 21:22:46,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 759 transitions, 12046 flow [2022-07-19 21:22:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:22:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-19 21:22:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3458 transitions. [2022-07-19 21:22:46,527 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2022-07-19 21:22:46,527 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3458 transitions. [2022-07-19 21:22:46,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3458 transitions. [2022-07-19 21:22:46,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:46,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3458 transitions. [2022-07-19 21:22:46,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 91.0) internal successors, (3458), 38 states have internal predecessors, (3458), 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) [2022-07-19 21:22:46,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 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) [2022-07-19 21:22:46,533 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 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) [2022-07-19 21:22:46,534 INFO L186 Difference]: Start difference. First operand has 456 places, 587 transitions, 9257 flow. Second operand 38 states and 3458 transitions. [2022-07-19 21:22:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 759 transitions, 12046 flow [2022-07-19 21:22:46,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 759 transitions, 11482 flow, removed 5 selfloop flow, removed 28 redundant places. [2022-07-19 21:22:46,831 INFO L242 Difference]: Finished difference. Result has 470 places, 625 transitions, 9998 flow [2022-07-19 21:22:46,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8714, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9998, PETRI_PLACES=470, PETRI_TRANSITIONS=625} [2022-07-19 21:22:46,832 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 315 predicate places. [2022-07-19 21:22:46,832 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 625 transitions, 9998 flow [2022-07-19 21:22:46,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 86.50769230769231) internal successors, (5623), 65 states have internal predecessors, (5623), 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) [2022-07-19 21:22:46,832 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:46,832 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:46,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:22:47,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 21:22:47,033 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1773275984, now seen corresponding path program 10 times [2022-07-19 21:22:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:47,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909722029] [2022-07-19 21:22:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909722029] [2022-07-19 21:22:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909722029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:47,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:47,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 21:22:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110335021] [2022-07-19 21:22:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:22:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:22:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:22:47,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:22:47,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 625 transitions, 9998 flow. Second operand has 20 states, 20 states have (on average 98.8) internal successors, (1976), 20 states have internal predecessors, (1976), 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) [2022-07-19 21:22:47,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:47,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:22:47,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:49,920 INFO L129 PetriNetUnfolder]: 4720/9119 cut-off events. [2022-07-19 21:22:49,921 INFO L130 PetriNetUnfolder]: For 78293/78312 co-relation queries the response was YES. [2022-07-19 21:22:49,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46144 conditions, 9119 events. 4720/9119 cut-off events. For 78293/78312 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 75270 event pairs, 1215 based on Foata normal form. 14/9054 useless extension candidates. Maximal degree in co-relation 46041. Up to 4993 conditions per place. [2022-07-19 21:22:50,019 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 373 selfloop transitions, 213 changer transitions 9/683 dead transitions. [2022-07-19 21:22:50,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 683 transitions, 11640 flow [2022-07-19 21:22:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:22:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:22:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2963 transitions. [2022-07-19 21:22:50,021 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5871977804201347 [2022-07-19 21:22:50,021 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2963 transitions. [2022-07-19 21:22:50,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2963 transitions. [2022-07-19 21:22:50,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:50,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2963 transitions. [2022-07-19 21:22:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 102.17241379310344) internal successors, (2963), 29 states have internal predecessors, (2963), 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) [2022-07-19 21:22:50,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:22:50,026 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:22:50,026 INFO L186 Difference]: Start difference. First operand has 470 places, 625 transitions, 9998 flow. Second operand 29 states and 2963 transitions. [2022-07-19 21:22:50,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 683 transitions, 11640 flow [2022-07-19 21:22:50,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 683 transitions, 11240 flow, removed 32 selfloop flow, removed 29 redundant places. [2022-07-19 21:22:50,367 INFO L242 Difference]: Finished difference. Result has 474 places, 624 transitions, 10139 flow [2022-07-19 21:22:50,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9613, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10139, PETRI_PLACES=474, PETRI_TRANSITIONS=624} [2022-07-19 21:22:50,368 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 319 predicate places. [2022-07-19 21:22:50,368 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 624 transitions, 10139 flow [2022-07-19 21:22:50,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 98.8) internal successors, (1976), 20 states have internal predecessors, (1976), 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) [2022-07-19 21:22:50,368 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:50,368 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:50,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:22:50,369 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1442239000, now seen corresponding path program 11 times [2022-07-19 21:22:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:50,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270713104] [2022-07-19 21:22:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:50,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:50,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270713104] [2022-07-19 21:22:50,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270713104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:50,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:50,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278569460] [2022-07-19 21:22:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:50,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:50,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:50,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:50,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:22:50,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 624 transitions, 10139 flow. Second operand has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:22:50,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:50,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:22:50,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:53,616 INFO L129 PetriNetUnfolder]: 5170/9923 cut-off events. [2022-07-19 21:22:53,616 INFO L130 PetriNetUnfolder]: For 90183/90202 co-relation queries the response was YES. [2022-07-19 21:22:53,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50063 conditions, 9923 events. 5170/9923 cut-off events. For 90183/90202 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 83191 event pairs, 1164 based on Foata normal form. 76/9919 useless extension candidates. Maximal degree in co-relation 49955. Up to 4630 conditions per place. [2022-07-19 21:22:53,720 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 392 selfloop transitions, 299 changer transitions 0/779 dead transitions. [2022-07-19 21:22:53,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 779 transitions, 12976 flow [2022-07-19 21:22:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:22:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:22:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3420 transitions. [2022-07-19 21:22:53,723 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5956112852664577 [2022-07-19 21:22:53,723 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3420 transitions. [2022-07-19 21:22:53,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3420 transitions. [2022-07-19 21:22:53,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:53,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3420 transitions. [2022-07-19 21:22:53,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 103.63636363636364) internal successors, (3420), 33 states have internal predecessors, (3420), 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) [2022-07-19 21:22:53,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 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) [2022-07-19 21:22:53,728 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 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) [2022-07-19 21:22:53,728 INFO L186 Difference]: Start difference. First operand has 474 places, 624 transitions, 10139 flow. Second operand 33 states and 3420 transitions. [2022-07-19 21:22:53,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 779 transitions, 12976 flow [2022-07-19 21:22:54,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 779 transitions, 12484 flow, removed 32 selfloop flow, removed 29 redundant places. [2022-07-19 21:22:54,115 INFO L242 Difference]: Finished difference. Result has 483 places, 659 transitions, 11159 flow [2022-07-19 21:22:54,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9695, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=11159, PETRI_PLACES=483, PETRI_TRANSITIONS=659} [2022-07-19 21:22:54,117 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 328 predicate places. [2022-07-19 21:22:54,117 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 659 transitions, 11159 flow [2022-07-19 21:22:54,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:22:54,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:54,117 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:54,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:22:54,117 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash -356820308, now seen corresponding path program 12 times [2022-07-19 21:22:54,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:54,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265502257] [2022-07-19 21:22:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:54,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:54,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265502257] [2022-07-19 21:22:54,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265502257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:54,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:54,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 21:22:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693402925] [2022-07-19 21:22:54,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:54,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:22:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:22:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:22:54,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:22:54,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 659 transitions, 11159 flow. Second operand has 20 states, 20 states have (on average 98.8) internal successors, (1976), 20 states have internal predecessors, (1976), 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) [2022-07-19 21:22:54,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:54,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:22:54,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:57,383 INFO L129 PetriNetUnfolder]: 5234/10061 cut-off events. [2022-07-19 21:22:57,383 INFO L130 PetriNetUnfolder]: For 99200/99219 co-relation queries the response was YES. [2022-07-19 21:22:57,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52583 conditions, 10061 events. 5234/10061 cut-off events. For 99200/99219 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 84525 event pairs, 1274 based on Foata normal form. 24/9998 useless extension candidates. Maximal degree in co-relation 52474. Up to 5642 conditions per place. [2022-07-19 21:22:57,496 INFO L132 encePairwiseOnDemand]: 141/174 looper letters, 403 selfloop transitions, 248 changer transitions 5/744 dead transitions. [2022-07-19 21:22:57,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 744 transitions, 13645 flow [2022-07-19 21:22:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:22:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:22:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2773 transitions. [2022-07-19 21:22:57,498 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5902511707109408 [2022-07-19 21:22:57,498 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2773 transitions. [2022-07-19 21:22:57,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2773 transitions. [2022-07-19 21:22:57,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:57,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2773 transitions. [2022-07-19 21:22:57,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 102.70370370370371) internal successors, (2773), 27 states have internal predecessors, (2773), 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) [2022-07-19 21:22:57,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 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) [2022-07-19 21:22:57,502 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 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) [2022-07-19 21:22:57,503 INFO L186 Difference]: Start difference. First operand has 483 places, 659 transitions, 11159 flow. Second operand 27 states and 2773 transitions. [2022-07-19 21:22:57,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 744 transitions, 13645 flow [2022-07-19 21:22:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 744 transitions, 13348 flow, removed 25 selfloop flow, removed 21 redundant places. [2022-07-19 21:22:57,927 INFO L242 Difference]: Finished difference. Result has 492 places, 687 transitions, 12225 flow [2022-07-19 21:22:57,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=10884, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=12225, PETRI_PLACES=492, PETRI_TRANSITIONS=687} [2022-07-19 21:22:57,928 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 337 predicate places. [2022-07-19 21:22:57,928 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 687 transitions, 12225 flow [2022-07-19 21:22:57,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 98.8) internal successors, (1976), 20 states have internal predecessors, (1976), 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) [2022-07-19 21:22:57,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:57,928 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:22:57,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:22:57,928 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:22:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:57,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1004739636, now seen corresponding path program 13 times [2022-07-19 21:22:57,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:57,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41613176] [2022-07-19 21:22:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:57,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:22:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41613176] [2022-07-19 21:22:58,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41613176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:58,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:58,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:22:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719152382] [2022-07-19 21:22:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:22:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:22:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:22:58,394 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:22:58,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 687 transitions, 12225 flow. Second operand has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:22:58,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:58,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:22:58,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:01,210 INFO L129 PetriNetUnfolder]: 5212/10019 cut-off events. [2022-07-19 21:23:01,210 INFO L130 PetriNetUnfolder]: For 102665/102684 co-relation queries the response was YES. [2022-07-19 21:23:01,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52165 conditions, 10019 events. 5212/10019 cut-off events. For 102665/102684 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 84192 event pairs, 1285 based on Foata normal form. 24/9956 useless extension candidates. Maximal degree in co-relation 52053. Up to 5642 conditions per place. [2022-07-19 21:23:01,324 INFO L132 encePairwiseOnDemand]: 141/174 looper letters, 402 selfloop transitions, 242 changer transitions 5/737 dead transitions. [2022-07-19 21:23:01,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 737 transitions, 13852 flow [2022-07-19 21:23:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:23:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:23:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2675 transitions. [2022-07-19 21:23:01,326 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5912908930150309 [2022-07-19 21:23:01,327 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2675 transitions. [2022-07-19 21:23:01,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2675 transitions. [2022-07-19 21:23:01,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:01,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2675 transitions. [2022-07-19 21:23:01,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 102.88461538461539) internal successors, (2675), 26 states have internal predecessors, (2675), 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) [2022-07-19 21:23:01,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 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) [2022-07-19 21:23:01,331 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 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) [2022-07-19 21:23:01,331 INFO L186 Difference]: Start difference. First operand has 492 places, 687 transitions, 12225 flow. Second operand 26 states and 2675 transitions. [2022-07-19 21:23:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 737 transitions, 13852 flow [2022-07-19 21:23:01,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 737 transitions, 13501 flow, removed 6 selfloop flow, removed 22 redundant places. [2022-07-19 21:23:01,824 INFO L242 Difference]: Finished difference. Result has 497 places, 681 transitions, 12300 flow [2022-07-19 21:23:01,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=11797, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12300, PETRI_PLACES=497, PETRI_TRANSITIONS=681} [2022-07-19 21:23:01,826 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 342 predicate places. [2022-07-19 21:23:01,826 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 681 transitions, 12300 flow [2022-07-19 21:23:01,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:23:01,826 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:23:01,826 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:23:01,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:23:01,827 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:23:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:23:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -105582696, now seen corresponding path program 14 times [2022-07-19 21:23:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:23:01,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304066762] [2022-07-19 21:23:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:01,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:23:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:23:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:23:02,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:23:02,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304066762] [2022-07-19 21:23:02,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304066762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:23:02,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:23:02,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:23:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442439906] [2022-07-19 21:23:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:23:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:23:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:23:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:23:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:23:02,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:23:02,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 681 transitions, 12300 flow. Second operand has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:23:02,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:23:02,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:23:02,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:05,368 INFO L129 PetriNetUnfolder]: 5362/10277 cut-off events. [2022-07-19 21:23:05,369 INFO L130 PetriNetUnfolder]: For 109996/110015 co-relation queries the response was YES. [2022-07-19 21:23:05,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53522 conditions, 10277 events. 5362/10277 cut-off events. For 109996/110015 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 86641 event pairs, 1286 based on Foata normal form. 80/10265 useless extension candidates. Maximal degree in co-relation 53410. Up to 5404 conditions per place. [2022-07-19 21:23:05,487 INFO L132 encePairwiseOnDemand]: 141/174 looper letters, 364 selfloop transitions, 307 changer transitions 0/759 dead transitions. [2022-07-19 21:23:05,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 759 transitions, 14106 flow [2022-07-19 21:23:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:23:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:23:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2992 transitions. [2022-07-19 21:23:05,489 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5929449068569164 [2022-07-19 21:23:05,489 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2992 transitions. [2022-07-19 21:23:05,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2992 transitions. [2022-07-19 21:23:05,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:05,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2992 transitions. [2022-07-19 21:23:05,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 103.17241379310344) internal successors, (2992), 29 states have internal predecessors, (2992), 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) [2022-07-19 21:23:05,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:23:05,495 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:23:05,495 INFO L186 Difference]: Start difference. First operand has 497 places, 681 transitions, 12300 flow. Second operand 29 states and 2992 transitions. [2022-07-19 21:23:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 759 transitions, 14106 flow [2022-07-19 21:23:05,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 759 transitions, 13515 flow, removed 6 selfloop flow, removed 26 redundant places. [2022-07-19 21:23:05,969 INFO L242 Difference]: Finished difference. Result has 505 places, 687 transitions, 12670 flow [2022-07-19 21:23:05,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=11328, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12670, PETRI_PLACES=505, PETRI_TRANSITIONS=687} [2022-07-19 21:23:05,971 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 350 predicate places. [2022-07-19 21:23:05,971 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 687 transitions, 12670 flow [2022-07-19 21:23:05,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:23:05,972 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:23:05,972 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:23:05,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:23:05,972 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:23:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:23:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1438483448, now seen corresponding path program 15 times [2022-07-19 21:23:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:23:05,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068099932] [2022-07-19 21:23:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:05,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:23:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:23:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:23:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:23:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068099932] [2022-07-19 21:23:06,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068099932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:23:06,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:23:06,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:23:06,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783617580] [2022-07-19 21:23:06,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:23:06,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:23:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:23:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:23:06,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:23:06,365 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:23:06,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 687 transitions, 12670 flow. Second operand has 22 states, 22 states have (on average 98.54545454545455) internal successors, (2168), 22 states have internal predecessors, (2168), 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) [2022-07-19 21:23:06,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:23:06,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:23:06,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:09,474 INFO L129 PetriNetUnfolder]: 5081/9718 cut-off events. [2022-07-19 21:23:09,474 INFO L130 PetriNetUnfolder]: For 106078/106097 co-relation queries the response was YES. [2022-07-19 21:23:09,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51633 conditions, 9718 events. 5081/9718 cut-off events. For 106078/106097 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 81104 event pairs, 1293 based on Foata normal form. 80/9702 useless extension candidates. Maximal degree in co-relation 51518. Up to 5087 conditions per place. [2022-07-19 21:23:09,611 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 350 selfloop transitions, 303 changer transitions 0/741 dead transitions. [2022-07-19 21:23:09,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 741 transitions, 13916 flow [2022-07-19 21:23:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:23:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:23:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2888 transitions. [2022-07-19 21:23:09,613 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5927750410509032 [2022-07-19 21:23:09,613 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2888 transitions. [2022-07-19 21:23:09,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2888 transitions. [2022-07-19 21:23:09,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:09,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2888 transitions. [2022-07-19 21:23:09,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 103.14285714285714) internal successors, (2888), 28 states have internal predecessors, (2888), 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) [2022-07-19 21:23:09,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 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) [2022-07-19 21:23:09,618 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 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) [2022-07-19 21:23:09,618 INFO L186 Difference]: Start difference. First operand has 505 places, 687 transitions, 12670 flow. Second operand 28 states and 2888 transitions. [2022-07-19 21:23:09,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 741 transitions, 13916 flow [2022-07-19 21:23:10,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 741 transitions, 13475 flow, removed 8 selfloop flow, removed 28 redundant places. [2022-07-19 21:23:10,138 INFO L242 Difference]: Finished difference. Result has 502 places, 670 transitions, 12462 flow [2022-07-19 21:23:10,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=11444, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12462, PETRI_PLACES=502, PETRI_TRANSITIONS=670} [2022-07-19 21:23:10,139 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 347 predicate places. [2022-07-19 21:23:10,139 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 670 transitions, 12462 flow [2022-07-19 21:23:10,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 98.54545454545455) internal successors, (2168), 22 states have internal predecessors, (2168), 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) [2022-07-19 21:23:10,140 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:23:10,140 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:23:10,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:23:10,140 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:23:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:23:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 139634646, now seen corresponding path program 11 times [2022-07-19 21:23:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:23:10,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428484305] [2022-07-19 21:23:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:23:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:23:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:23:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:23:10,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428484305] [2022-07-19 21:23:10,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428484305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:23:10,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:23:10,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:23:10,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468008328] [2022-07-19 21:23:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:23:10,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:23:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:23:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:23:10,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:23:10,683 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 174 [2022-07-19 21:23:10,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 670 transitions, 12462 flow. Second operand has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:23:10,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:23:10,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 174 [2022-07-19 21:23:10,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:13,580 INFO L129 PetriNetUnfolder]: 5093/9729 cut-off events. [2022-07-19 21:23:13,580 INFO L130 PetriNetUnfolder]: For 110217/110236 co-relation queries the response was YES. [2022-07-19 21:23:13,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52436 conditions, 9729 events. 5093/9729 cut-off events. For 110217/110236 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 80975 event pairs, 1331 based on Foata normal form. 14/9643 useless extension candidates. Maximal degree in co-relation 52322. Up to 5601 conditions per place. [2022-07-19 21:23:13,697 INFO L132 encePairwiseOnDemand]: 143/174 looper letters, 365 selfloop transitions, 276 changer transitions 2/731 dead transitions. [2022-07-19 21:23:13,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 731 transitions, 14200 flow [2022-07-19 21:23:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:23:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:23:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2973 transitions. [2022-07-19 21:23:13,699 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5891795481569561 [2022-07-19 21:23:13,699 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2973 transitions. [2022-07-19 21:23:13,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2973 transitions. [2022-07-19 21:23:13,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:13,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2973 transitions. [2022-07-19 21:23:13,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 102.51724137931035) internal successors, (2973), 29 states have internal predecessors, (2973), 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) [2022-07-19 21:23:13,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:23:13,704 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-07-19 21:23:13,704 INFO L186 Difference]: Start difference. First operand has 502 places, 670 transitions, 12462 flow. Second operand 29 states and 2973 transitions. [2022-07-19 21:23:13,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 731 transitions, 14200 flow [2022-07-19 21:23:14,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 731 transitions, 13838 flow, removed 6 selfloop flow, removed 23 redundant places. [2022-07-19 21:23:14,183 INFO L242 Difference]: Finished difference. Result has 510 places, 675 transitions, 12864 flow [2022-07-19 21:23:14,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=12106, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12864, PETRI_PLACES=510, PETRI_TRANSITIONS=675} [2022-07-19 21:23:14,184 INFO L279 CegarLoopForPetriNet]: 155 programPoint places, 355 predicate places. [2022-07-19 21:23:14,184 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 675 transitions, 12864 flow [2022-07-19 21:23:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.66666666666667) internal successors, (2072), 21 states have internal predecessors, (2072), 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) [2022-07-19 21:23:14,185 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:23:14,185 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:23:14,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 21:23:14,185 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:23:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:23:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash -155629712, now seen corresponding path program 12 times [2022-07-19 21:23:14,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:23:14,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94861683] [2022-07-19 21:23:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:14,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:23:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:23:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:23:14,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:23:14,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94861683] [2022-07-19 21:23:14,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94861683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:23:14,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:23:14,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 21:23:14,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385550761] [2022-07-19 21:23:14,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:23:14,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:23:14,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:23:14,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:23:14,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:23:14,680 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-19 21:23:14,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 675 transitions, 12864 flow. Second operand has 20 states, 20 states have (on average 101.7) internal successors, (2034), 20 states have internal predecessors, (2034), 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) [2022-07-19 21:23:14,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:23:14,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-19 21:23:14,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:17,534 INFO L129 PetriNetUnfolder]: 5101/9783 cut-off events. [2022-07-19 21:23:17,535 INFO L130 PetriNetUnfolder]: For 114891/114910 co-relation queries the response was YES. [2022-07-19 21:23:17,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52908 conditions, 9783 events. 5101/9783 cut-off events. For 114891/114910 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 82055 event pairs, 1330 based on Foata normal form. 16/9701 useless extension candidates. Maximal degree in co-relation 52794. Up to 5599 conditions per place. [2022-07-19 21:23:17,660 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 405 selfloop transitions, 223 changer transitions 15/733 dead transitions. [2022-07-19 21:23:17,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 733 transitions, 14580 flow [2022-07-19 21:23:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:23:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:23:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2944 transitions. [2022-07-19 21:23:17,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6042692939244664 [2022-07-19 21:23:17,663 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2944 transitions. [2022-07-19 21:23:17,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2944 transitions. [2022-07-19 21:23:17,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:17,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2944 transitions. [2022-07-19 21:23:17,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.14285714285714) internal successors, (2944), 28 states have internal predecessors, (2944), 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) [2022-07-19 21:23:17,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 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) [2022-07-19 21:23:17,668 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 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) [2022-07-19 21:23:17,668 INFO L186 Difference]: Start difference. First operand has 510 places, 675 transitions, 12864 flow. Second operand 28 states and 2944 transitions. [2022-07-19 21:23:17,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 733 transitions, 14580 flow