./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/chl-word-subst.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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:00:14,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:00:14,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:00:14,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:00:14,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:00:14,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:00:14,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:00:14,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:00:14,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:00:14,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:00:14,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:00:14,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:00:14,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:00:14,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:00:14,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:00:14,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:00:14,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:00:14,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:00:14,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:00:14,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:00:14,682 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:00:14,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:00:14,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:00:14,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:00:14,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:00:14,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:00:14,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:00:14,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:00:14,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:00:14,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:00:14,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:00:14,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:00:14,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:00:14,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:00:14,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:00:14,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:00:14,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:00:14,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:00:14,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:00:14,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:00:14,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:00:14,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:00:14,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:00:14,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:00:14,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:00:14,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:00:14,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:00:14,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:00:14,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:00:14,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:00:14,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:00:14,726 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:00:14,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:00:14,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:00:14,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:00:14,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:00:14,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:00:14,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:00:14,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:00:14,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:00:14,732 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:00:14,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:00:14,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:00:14,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:00:14,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:00:14,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:00:14,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:00:14,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:00:14,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:00:14,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:00:14,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:00:14,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:00:14,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:00:14,735 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:00:14,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:00:14,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:00:14,735 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-07-21 09:00:15,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:00:15,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:00:15,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:00:15,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:00:15,126 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:00:15,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-07-21 09:00:15,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22acee30e/6922e3799f6444419e2738c86514a906/FLAGff475a62c [2022-07-21 09:00:15,546 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:00:15,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-07-21 09:00:15,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22acee30e/6922e3799f6444419e2738c86514a906/FLAGff475a62c [2022-07-21 09:00:15,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22acee30e/6922e3799f6444419e2738c86514a906 [2022-07-21 09:00:15,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:00:15,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:00:15,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:00:15,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:00:15,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:00:15,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c7997c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15, skipping insertion in model container [2022-07-21 09:00:15,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:00:15,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:00:15,798 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/chl-word-subst.wvr.c[3345,3358] [2022-07-21 09:00:15,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:00:15,815 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:00:15,852 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/chl-word-subst.wvr.c[3345,3358] [2022-07-21 09:00:15,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:00:15,870 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:00:15,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15 WrapperNode [2022-07-21 09:00:15,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:00:15,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:00:15,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:00:15,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:00:15,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,920 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-07-21 09:00:15,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:00:15,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:00:15,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:00:15,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:00:15,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:00:15,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:00:15,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:00:15,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:00:15,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (1/1) ... [2022-07-21 09:00:15,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:00:15,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:00:16,014 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) [2022-07-21 09:00:16,049 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 [2022-07-21 09:00:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:00:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:00:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:00:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:00:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:00:16,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:00:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:00:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:00:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:00:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:00:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:00:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:00:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:00:16,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:00:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:00:16,065 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:00:16,201 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:00:16,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:00:16,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:00:16,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:00:16,679 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 09:00:16,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:00:16 BoogieIcfgContainer [2022-07-21 09:00:16,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:00:16,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:00:16,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:00:16,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:00:16,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:00:15" (1/3) ... [2022-07-21 09:00:16,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8609de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:00:16, skipping insertion in model container [2022-07-21 09:00:16,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:15" (2/3) ... [2022-07-21 09:00:16,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8609de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:00:16, skipping insertion in model container [2022-07-21 09:00:16,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:00:16" (3/3) ... [2022-07-21 09:00:16,695 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-07-21 09:00:16,699 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:00:16,705 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:00:16,706 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:00:16,706 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:00:16,856 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 09:00:16,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 340 transitions, 704 flow [2022-07-21 09:00:17,115 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-07-21 09:00:17,115 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:00:17,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 35/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 508 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-07-21 09:00:17,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 340 transitions, 704 flow [2022-07-21 09:00:17,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 326 transitions, 670 flow [2022-07-21 09:00:17,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:00:17,160 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@1c1f06ee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12003e71 [2022-07-21 09:00:17,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 09:00:17,235 INFO L129 PetriNetUnfolder]: 35/325 cut-off events. [2022-07-21 09:00:17,236 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:00:17,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:17,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:17,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:17,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash -99870110, now seen corresponding path program 1 times [2022-07-21 09:00:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:17,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807924420] [2022-07-21 09:00:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:17,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:17,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807924420] [2022-07-21 09:00:17,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807924420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:17,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:17,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:00:17,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451720194] [2022-07-21 09:00:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:17,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:00:17,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:00:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:00:17,536 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 340 [2022-07-21 09:00:17,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:17,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 340 [2022-07-21 09:00:17,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:17,611 INFO L129 PetriNetUnfolder]: 21/312 cut-off events. [2022-07-21 09:00:17,612 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-21 09:00:17,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 312 events. 21/312 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 492 event pairs, 0 based on Foata normal form. 20/303 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-07-21 09:00:17,617 INFO L132 encePairwiseOnDemand]: 326/340 looper letters, 6 selfloop transitions, 0 changer transitions 8/312 dead transitions. [2022-07-21 09:00:17,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 312 transitions, 654 flow [2022-07-21 09:00:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:00:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:00:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 658 transitions. [2022-07-21 09:00:17,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9676470588235294 [2022-07-21 09:00:17,633 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 658 transitions. [2022-07-21 09:00:17,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 658 transitions. [2022-07-21 09:00:17,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:17,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 658 transitions. [2022-07-21 09:00:17,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,649 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,651 INFO L186 Difference]: Start difference. First operand has 301 places, 326 transitions, 670 flow. Second operand 2 states and 658 transitions. [2022-07-21 09:00:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 312 transitions, 654 flow [2022-07-21 09:00:17,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 312 transitions, 642 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 09:00:17,658 INFO L242 Difference]: Finished difference. Result has 296 places, 304 transitions, 614 flow [2022-07-21 09:00:17,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=304} [2022-07-21 09:00:17,662 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -5 predicate places. [2022-07-21 09:00:17,662 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 304 transitions, 614 flow [2022-07-21 09:00:17,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,663 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:17,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:17,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:00:17,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -727196831, now seen corresponding path program 1 times [2022-07-21 09:00:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:17,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430421144] [2022-07-21 09:00:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:17,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:17,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430421144] [2022-07-21 09:00:17,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430421144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:17,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:17,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813795953] [2022-07-21 09:00:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:17,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:17,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:17,779 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-21 09:00:17,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 304 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:17,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-21 09:00:17,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:17,844 INFO L129 PetriNetUnfolder]: 51/490 cut-off events. [2022-07-21 09:00:17,844 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-07-21 09:00:17,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 490 events. 51/490 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1501 event pairs, 4 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 538. Up to 22 conditions per place. [2022-07-21 09:00:17,855 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 14 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-07-21 09:00:17,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 310 transitions, 663 flow [2022-07-21 09:00:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-07-21 09:00:17,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2022-07-21 09:00:17,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-07-21 09:00:17,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-07-21 09:00:17,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:17,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-07-21 09:00:17,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,863 INFO L186 Difference]: Start difference. First operand has 296 places, 304 transitions, 614 flow. Second operand 3 states and 962 transitions. [2022-07-21 09:00:17,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 310 transitions, 663 flow [2022-07-21 09:00:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:00:17,868 INFO L242 Difference]: Finished difference. Result has 291 places, 304 transitions, 622 flow [2022-07-21 09:00:17,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=291, PETRI_TRANSITIONS=304} [2022-07-21 09:00:17,869 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -10 predicate places. [2022-07-21 09:00:17,869 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 304 transitions, 622 flow [2022-07-21 09:00:17,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:17,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:17,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:00:17,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:17,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash -733854043, now seen corresponding path program 1 times [2022-07-21 09:00:17,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:17,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233029113] [2022-07-21 09:00:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:17,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233029113] [2022-07-21 09:00:18,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233029113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:18,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:18,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050910825] [2022-07-21 09:00:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:18,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:18,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 304 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:18,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:18,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:18,603 INFO L129 PetriNetUnfolder]: 799/4113 cut-off events. [2022-07-21 09:00:18,603 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-07-21 09:00:18,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4922 conditions, 4113 events. 799/4113 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 40332 event pairs, 130 based on Foata normal form. 0/3452 useless extension candidates. Maximal degree in co-relation 4917. Up to 261 conditions per place. [2022-07-21 09:00:18,630 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 56 selfloop transitions, 10 changer transitions 0/346 dead transitions. [2022-07-21 09:00:18,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 346 transitions, 851 flow [2022-07-21 09:00:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1572 transitions. [2022-07-21 09:00:18,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9247058823529412 [2022-07-21 09:00:18,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1572 transitions. [2022-07-21 09:00:18,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1572 transitions. [2022-07-21 09:00:18,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:18,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1572 transitions. [2022-07-21 09:00:18,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.4) internal successors, (1572), 5 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,641 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,642 INFO L186 Difference]: Start difference. First operand has 291 places, 304 transitions, 622 flow. Second operand 5 states and 1572 transitions. [2022-07-21 09:00:18,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 346 transitions, 851 flow [2022-07-21 09:00:18,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 346 transitions, 847 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:18,649 INFO L242 Difference]: Finished difference. Result has 297 places, 314 transitions, 694 flow [2022-07-21 09:00:18,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=694, PETRI_PLACES=297, PETRI_TRANSITIONS=314} [2022-07-21 09:00:18,651 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -4 predicate places. [2022-07-21 09:00:18,651 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 314 transitions, 694 flow [2022-07-21 09:00:18,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,652 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:18,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:18,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:00:18,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 832788273, now seen corresponding path program 2 times [2022-07-21 09:00:18,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:18,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101526267] [2022-07-21 09:00:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:18,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:18,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101526267] [2022-07-21 09:00:18,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101526267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:18,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:18,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:18,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159685296] [2022-07-21 09:00:18,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:18,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:18,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:18,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 314 transitions, 694 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:18,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:18,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:19,256 INFO L129 PetriNetUnfolder]: 745/4011 cut-off events. [2022-07-21 09:00:19,256 INFO L130 PetriNetUnfolder]: For 663/678 co-relation queries the response was YES. [2022-07-21 09:00:19,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 4011 events. 745/4011 cut-off events. For 663/678 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38998 event pairs, 139 based on Foata normal form. 19/3668 useless extension candidates. Maximal degree in co-relation 5283. Up to 238 conditions per place. [2022-07-21 09:00:19,284 INFO L132 encePairwiseOnDemand]: 330/340 looper letters, 80 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2022-07-21 09:00:19,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 376 transitions, 1102 flow [2022-07-21 09:00:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:00:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:00:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2191 transitions. [2022-07-21 09:00:19,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9205882352941176 [2022-07-21 09:00:19,288 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2191 transitions. [2022-07-21 09:00:19,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2191 transitions. [2022-07-21 09:00:19,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2191 transitions. [2022-07-21 09:00:19,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,299 INFO L186 Difference]: Start difference. First operand has 297 places, 314 transitions, 694 flow. Second operand 7 states and 2191 transitions. [2022-07-21 09:00:19,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 376 transitions, 1102 flow [2022-07-21 09:00:19,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 376 transitions, 1102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:00:19,306 INFO L242 Difference]: Finished difference. Result has 307 places, 329 transitions, 835 flow [2022-07-21 09:00:19,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=307, PETRI_TRANSITIONS=329} [2022-07-21 09:00:19,307 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 6 predicate places. [2022-07-21 09:00:19,312 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 329 transitions, 835 flow [2022-07-21 09:00:19,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:19,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:00:19,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash -234720043, now seen corresponding path program 1 times [2022-07-21 09:00:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734645219] [2022-07-21 09:00:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734645219] [2022-07-21 09:00:19,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734645219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:19,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:19,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:00:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146467098] [2022-07-21 09:00:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:00:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:00:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:00:19,395 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:19,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 329 transitions, 835 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:19,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:19,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:19,870 INFO L129 PetriNetUnfolder]: 733/4270 cut-off events. [2022-07-21 09:00:19,870 INFO L130 PetriNetUnfolder]: For 1736/1751 co-relation queries the response was YES. [2022-07-21 09:00:19,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 4270 events. 733/4270 cut-off events. For 1736/1751 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 42774 event pairs, 258 based on Foata normal form. 16/3896 useless extension candidates. Maximal degree in co-relation 6177. Up to 449 conditions per place. [2022-07-21 09:00:19,895 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 67 selfloop transitions, 13 changer transitions 0/360 dead transitions. [2022-07-21 09:00:19,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 360 transitions, 1150 flow [2022-07-21 09:00:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:00:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 09:00:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-07-21 09:00:19,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-07-21 09:00:19,898 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-07-21 09:00:19,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-07-21 09:00:19,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-07-21 09:00:19,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,903 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,903 INFO L186 Difference]: Start difference. First operand has 307 places, 329 transitions, 835 flow. Second operand 4 states and 1248 transitions. [2022-07-21 09:00:19,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 360 transitions, 1150 flow [2022-07-21 09:00:19,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 360 transitions, 1150 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:00:19,911 INFO L242 Difference]: Finished difference. Result has 312 places, 333 transitions, 914 flow [2022-07-21 09:00:19,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=312, PETRI_TRANSITIONS=333} [2022-07-21 09:00:19,913 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 11 predicate places. [2022-07-21 09:00:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 333 transitions, 914 flow [2022-07-21 09:00:19,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,913 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:00:19,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1046285933, now seen corresponding path program 2 times [2022-07-21 09:00:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009157168] [2022-07-21 09:00:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:19,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009157168] [2022-07-21 09:00:19,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009157168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:19,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:19,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:00:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931848784] [2022-07-21 09:00:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:19,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:00:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:00:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:00:19,962 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:19,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 333 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:19,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:19,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:20,536 INFO L129 PetriNetUnfolder]: 789/4644 cut-off events. [2022-07-21 09:00:20,537 INFO L130 PetriNetUnfolder]: For 2705/2705 co-relation queries the response was YES. [2022-07-21 09:00:20,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6741 conditions, 4644 events. 789/4644 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 47363 event pairs, 320 based on Foata normal form. 10/4210 useless extension candidates. Maximal degree in co-relation 6725. Up to 637 conditions per place. [2022-07-21 09:00:20,563 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 62 selfloop transitions, 12 changer transitions 0/354 dead transitions. [2022-07-21 09:00:20,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 354 transitions, 1164 flow [2022-07-21 09:00:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:00:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 09:00:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-07-21 09:00:20,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9183823529411764 [2022-07-21 09:00:20,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-07-21 09:00:20,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-07-21 09:00:20,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:20,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-07-21 09:00:20,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,571 INFO L186 Difference]: Start difference. First operand has 312 places, 333 transitions, 914 flow. Second operand 4 states and 1249 transitions. [2022-07-21 09:00:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 354 transitions, 1164 flow [2022-07-21 09:00:20,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 354 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:20,582 INFO L242 Difference]: Finished difference. Result has 316 places, 337 transitions, 995 flow [2022-07-21 09:00:20,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=995, PETRI_PLACES=316, PETRI_TRANSITIONS=337} [2022-07-21 09:00:20,583 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 15 predicate places. [2022-07-21 09:00:20,583 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 337 transitions, 995 flow [2022-07-21 09:00:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,584 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:20,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:20,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:00:20,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash -95565999, now seen corresponding path program 3 times [2022-07-21 09:00:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:20,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290604502] [2022-07-21 09:00:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:20,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290604502] [2022-07-21 09:00:20,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290604502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:20,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:20,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326656580] [2022-07-21 09:00:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:20,642 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:20,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 337 transitions, 995 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:20,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:20,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:21,313 INFO L129 PetriNetUnfolder]: 772/4816 cut-off events. [2022-07-21 09:00:21,314 INFO L130 PetriNetUnfolder]: For 3449/3449 co-relation queries the response was YES. [2022-07-21 09:00:21,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 4816 events. 772/4816 cut-off events. For 3449/3449 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 50147 event pairs, 141 based on Foata normal form. 12/4445 useless extension candidates. Maximal degree in co-relation 7265. Up to 254 conditions per place. [2022-07-21 09:00:21,354 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 87 selfloop transitions, 30 changer transitions 0/397 dead transitions. [2022-07-21 09:00:21,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 397 transitions, 1603 flow [2022-07-21 09:00:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:00:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:00:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2193 transitions. [2022-07-21 09:00:21,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214285714285714 [2022-07-21 09:00:21,358 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2193 transitions. [2022-07-21 09:00:21,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2193 transitions. [2022-07-21 09:00:21,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:21,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2193 transitions. [2022-07-21 09:00:21,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.2857142857143) internal successors, (2193), 7 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,366 INFO L186 Difference]: Start difference. First operand has 316 places, 337 transitions, 995 flow. Second operand 7 states and 2193 transitions. [2022-07-21 09:00:21,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 397 transitions, 1603 flow [2022-07-21 09:00:21,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 397 transitions, 1583 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:21,378 INFO L242 Difference]: Finished difference. Result has 325 places, 352 transitions, 1280 flow [2022-07-21 09:00:21,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=325, PETRI_TRANSITIONS=352} [2022-07-21 09:00:21,379 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 24 predicate places. [2022-07-21 09:00:21,379 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 352 transitions, 1280 flow [2022-07-21 09:00:21,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,380 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:21,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:21,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:00:21,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -950907661, now seen corresponding path program 4 times [2022-07-21 09:00:21,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:21,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483892835] [2022-07-21 09:00:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:21,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:21,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:21,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483892835] [2022-07-21 09:00:21,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483892835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:21,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:21,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:21,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885517226] [2022-07-21 09:00:21,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:21,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:21,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:21,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:21,439 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:21,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 352 transitions, 1280 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:21,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:21,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:21,930 INFO L129 PetriNetUnfolder]: 780/4867 cut-off events. [2022-07-21 09:00:21,930 INFO L130 PetriNetUnfolder]: For 4756/4762 co-relation queries the response was YES. [2022-07-21 09:00:21,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 4867 events. 780/4867 cut-off events. For 4756/4762 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 51689 event pairs, 242 based on Foata normal form. 4/4455 useless extension candidates. Maximal degree in co-relation 7826. Up to 323 conditions per place. [2022-07-21 09:00:21,976 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 82 selfloop transitions, 43 changer transitions 0/405 dead transitions. [2022-07-21 09:00:21,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 405 transitions, 1954 flow [2022-07-21 09:00:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1573 transitions. [2022-07-21 09:00:21,979 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9252941176470588 [2022-07-21 09:00:21,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1573 transitions. [2022-07-21 09:00:21,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1573 transitions. [2022-07-21 09:00:21,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:21,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1573 transitions. [2022-07-21 09:00:21,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.6) internal successors, (1573), 5 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,985 INFO L186 Difference]: Start difference. First operand has 325 places, 352 transitions, 1280 flow. Second operand 5 states and 1573 transitions. [2022-07-21 09:00:21,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 405 transitions, 1954 flow [2022-07-21 09:00:22,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 405 transitions, 1920 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:22,007 INFO L242 Difference]: Finished difference. Result has 331 places, 368 transitions, 1659 flow [2022-07-21 09:00:22,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1659, PETRI_PLACES=331, PETRI_TRANSITIONS=368} [2022-07-21 09:00:22,008 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 30 predicate places. [2022-07-21 09:00:22,008 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 368 transitions, 1659 flow [2022-07-21 09:00:22,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,009 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:00:22,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1282439913, now seen corresponding path program 5 times [2022-07-21 09:00:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19510841] [2022-07-21 09:00:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:22,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19510841] [2022-07-21 09:00:22,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19510841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:22,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:22,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853560427] [2022-07-21 09:00:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:22,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:22,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:22,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 368 transitions, 1659 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:22,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:22,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:22,701 INFO L129 PetriNetUnfolder]: 824/5165 cut-off events. [2022-07-21 09:00:22,702 INFO L130 PetriNetUnfolder]: For 7229/7235 co-relation queries the response was YES. [2022-07-21 09:00:22,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 5165 events. 824/5165 cut-off events. For 7229/7235 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 56330 event pairs, 279 based on Foata normal form. 8/4737 useless extension candidates. Maximal degree in co-relation 8736. Up to 420 conditions per place. [2022-07-21 09:00:22,754 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 97 selfloop transitions, 29 changer transitions 0/406 dead transitions. [2022-07-21 09:00:22,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 406 transitions, 2198 flow [2022-07-21 09:00:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-07-21 09:00:22,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223529411764706 [2022-07-21 09:00:22,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-07-21 09:00:22,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-07-21 09:00:22,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:22,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-07-21 09:00:22,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,763 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,763 INFO L186 Difference]: Start difference. First operand has 331 places, 368 transitions, 1659 flow. Second operand 5 states and 1568 transitions. [2022-07-21 09:00:22,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 406 transitions, 2198 flow [2022-07-21 09:00:22,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 406 transitions, 2198 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:00:22,792 INFO L242 Difference]: Finished difference. Result has 338 places, 375 transitions, 1877 flow [2022-07-21 09:00:22,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1877, PETRI_PLACES=338, PETRI_TRANSITIONS=375} [2022-07-21 09:00:22,793 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 37 predicate places. [2022-07-21 09:00:22,793 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 375 transitions, 1877 flow [2022-07-21 09:00:22,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:00:22,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash -277259783, now seen corresponding path program 3 times [2022-07-21 09:00:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136278785] [2022-07-21 09:00:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:22,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:22,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136278785] [2022-07-21 09:00:22,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136278785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:22,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:22,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:00:22,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638898952] [2022-07-21 09:00:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:22,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:00:22,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:22,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:00:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:00:22,839 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:22,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 375 transitions, 1877 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:22,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:22,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:23,418 INFO L129 PetriNetUnfolder]: 865/5533 cut-off events. [2022-07-21 09:00:23,418 INFO L130 PetriNetUnfolder]: For 9205/9209 co-relation queries the response was YES. [2022-07-21 09:00:23,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 5533 events. 865/5533 cut-off events. For 9205/9209 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 60768 event pairs, 281 based on Foata normal form. 15/5060 useless extension candidates. Maximal degree in co-relation 9378. Up to 546 conditions per place. [2022-07-21 09:00:23,467 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 103 selfloop transitions, 38 changer transitions 0/421 dead transitions. [2022-07-21 09:00:23,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 421 transitions, 2505 flow [2022-07-21 09:00:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1570 transitions. [2022-07-21 09:00:23,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9235294117647059 [2022-07-21 09:00:23,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1570 transitions. [2022-07-21 09:00:23,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1570 transitions. [2022-07-21 09:00:23,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:23,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1570 transitions. [2022-07-21 09:00:23,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,475 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,476 INFO L186 Difference]: Start difference. First operand has 338 places, 375 transitions, 1877 flow. Second operand 5 states and 1570 transitions. [2022-07-21 09:00:23,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 421 transitions, 2505 flow [2022-07-21 09:00:23,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 421 transitions, 2478 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:23,503 INFO L242 Difference]: Finished difference. Result has 344 places, 383 transitions, 2101 flow [2022-07-21 09:00:23,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2101, PETRI_PLACES=344, PETRI_TRANSITIONS=383} [2022-07-21 09:00:23,504 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 43 predicate places. [2022-07-21 09:00:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 383 transitions, 2101 flow [2022-07-21 09:00:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:23,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:23,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:00:23,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash 564015917, now seen corresponding path program 1 times [2022-07-21 09:00:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:23,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497669059] [2022-07-21 09:00:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:23,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497669059] [2022-07-21 09:00:23,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497669059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:23,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:23,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742069737] [2022-07-21 09:00:23,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:23,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:23,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:23,541 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-21 09:00:23,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 383 transitions, 2101 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:23,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-21 09:00:23,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:23,902 INFO L129 PetriNetUnfolder]: 396/3680 cut-off events. [2022-07-21 09:00:23,903 INFO L130 PetriNetUnfolder]: For 7300/8783 co-relation queries the response was YES. [2022-07-21 09:00:23,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 3680 events. 396/3680 cut-off events. For 7300/8783 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 38103 event pairs, 80 based on Foata normal form. 2/3362 useless extension candidates. Maximal degree in co-relation 5646. Up to 292 conditions per place. [2022-07-21 09:00:23,934 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 13 selfloop transitions, 2 changer transitions 0/388 dead transitions. [2022-07-21 09:00:23,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 388 transitions, 2145 flow [2022-07-21 09:00:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-07-21 09:00:23,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.942156862745098 [2022-07-21 09:00:23,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-07-21 09:00:23,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-07-21 09:00:23,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:23,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-07-21 09:00:23,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,940 INFO L186 Difference]: Start difference. First operand has 344 places, 383 transitions, 2101 flow. Second operand 3 states and 961 transitions. [2022-07-21 09:00:23,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 388 transitions, 2145 flow [2022-07-21 09:00:23,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 388 transitions, 2123 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-07-21 09:00:23,961 INFO L242 Difference]: Finished difference. Result has 347 places, 383 transitions, 2087 flow [2022-07-21 09:00:23,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2087, PETRI_PLACES=347, PETRI_TRANSITIONS=383} [2022-07-21 09:00:23,962 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 46 predicate places. [2022-07-21 09:00:23,962 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 383 transitions, 2087 flow [2022-07-21 09:00:23,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:23,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:23,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:00:23,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash -242124393, now seen corresponding path program 1 times [2022-07-21 09:00:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:23,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928664820] [2022-07-21 09:00:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928664820] [2022-07-21 09:00:23,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928664820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:23,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:23,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704566304] [2022-07-21 09:00:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:23,996 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-21 09:00:23,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 383 transitions, 2087 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:23,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-21 09:00:23,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:24,516 INFO L129 PetriNetUnfolder]: 600/5268 cut-off events. [2022-07-21 09:00:24,517 INFO L130 PetriNetUnfolder]: For 7949/9466 co-relation queries the response was YES. [2022-07-21 09:00:24,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 5268 events. 600/5268 cut-off events. For 7949/9466 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 58662 event pairs, 147 based on Foata normal form. 8/4825 useless extension candidates. Maximal degree in co-relation 7755. Up to 421 conditions per place. [2022-07-21 09:00:24,557 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 12 selfloop transitions, 2 changer transitions 0/387 dead transitions. [2022-07-21 09:00:24,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 387 transitions, 2126 flow [2022-07-21 09:00:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-07-21 09:00:24,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-07-21 09:00:24,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-07-21 09:00:24,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-07-21 09:00:24,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:24,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-07-21 09:00:24,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:24,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:24,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:24,563 INFO L186 Difference]: Start difference. First operand has 347 places, 383 transitions, 2087 flow. Second operand 3 states and 960 transitions. [2022-07-21 09:00:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 387 transitions, 2126 flow [2022-07-21 09:00:24,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 387 transitions, 2122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:24,588 INFO L242 Difference]: Finished difference. Result has 348 places, 383 transitions, 2091 flow [2022-07-21 09:00:24,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2091, PETRI_PLACES=348, PETRI_TRANSITIONS=383} [2022-07-21 09:00:24,589 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 47 predicate places. [2022-07-21 09:00:24,589 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 383 transitions, 2091 flow [2022-07-21 09:00:24,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:24,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:24,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 09:00:24,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:24,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1289668909, now seen corresponding path program 1 times [2022-07-21 09:00:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:24,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853585168] [2022-07-21 09:00:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:25,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:25,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853585168] [2022-07-21 09:00:25,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853585168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:25,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:25,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-21 09:00:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072429132] [2022-07-21 09:00:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:25,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 09:00:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 09:00:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:00:25,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-07-21 09:00:25,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 383 transitions, 2091 flow. Second operand has 24 states, 24 states have (on average 230.91666666666666) internal successors, (5542), 24 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:25,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:25,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-07-21 09:00:25,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:38,264 INFO L129 PetriNetUnfolder]: 18929/82414 cut-off events. [2022-07-21 09:00:38,264 INFO L130 PetriNetUnfolder]: For 37631/44781 co-relation queries the response was YES. [2022-07-21 09:00:38,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123087 conditions, 82414 events. 18929/82414 cut-off events. For 37631/44781 co-relation queries the response was YES. Maximal size of possible extension queue 3493. Compared 1350561 event pairs, 9058 based on Foata normal form. 39/70218 useless extension candidates. Maximal degree in co-relation 123052. Up to 5923 conditions per place. [2022-07-21 09:00:39,176 INFO L132 encePairwiseOnDemand]: 305/340 looper letters, 250 selfloop transitions, 42 changer transitions 12/598 dead transitions. [2022-07-21 09:00:39,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 598 transitions, 3160 flow [2022-07-21 09:00:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-21 09:00:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-21 09:00:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9197 transitions. [2022-07-21 09:00:39,189 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6935897435897436 [2022-07-21 09:00:39,189 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 9197 transitions. [2022-07-21 09:00:39,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 9197 transitions. [2022-07-21 09:00:39,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:39,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 9197 transitions. [2022-07-21 09:00:39,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 235.82051282051282) internal successors, (9197), 39 states have internal predecessors, (9197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:39,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 340.0) internal successors, (13600), 40 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:39,218 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 340.0) internal successors, (13600), 40 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:39,218 INFO L186 Difference]: Start difference. First operand has 348 places, 383 transitions, 2091 flow. Second operand 39 states and 9197 transitions. [2022-07-21 09:00:39,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 598 transitions, 3160 flow [2022-07-21 09:00:39,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 598 transitions, 3156 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:39,345 INFO L242 Difference]: Finished difference. Result has 399 places, 413 transitions, 2312 flow [2022-07-21 09:00:39,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2312, PETRI_PLACES=399, PETRI_TRANSITIONS=413} [2022-07-21 09:00:39,346 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 98 predicate places. [2022-07-21 09:00:39,346 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 413 transitions, 2312 flow [2022-07-21 09:00:39,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 230.91666666666666) internal successors, (5542), 24 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:39,347 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:39,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:39,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 09:00:39,348 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1065805489, now seen corresponding path program 1 times [2022-07-21 09:00:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:39,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524911733] [2022-07-21 09:00:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:39,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:39,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524911733] [2022-07-21 09:00:39,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524911733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:39,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:39,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:00:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023714219] [2022-07-21 09:00:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:39,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:00:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:00:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:00:39,386 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:00:39,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 413 transitions, 2312 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:39,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:39,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:00:39,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:43,905 INFO L129 PetriNetUnfolder]: 3751/31556 cut-off events. [2022-07-21 09:00:43,906 INFO L130 PetriNetUnfolder]: For 54047/54849 co-relation queries the response was YES. [2022-07-21 09:00:44,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56572 conditions, 31556 events. 3751/31556 cut-off events. For 54047/54849 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 492579 event pairs, 1025 based on Foata normal form. 58/29857 useless extension candidates. Maximal degree in co-relation 56522. Up to 2390 conditions per place. [2022-07-21 09:00:44,353 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 88 selfloop transitions, 49 changer transitions 0/447 dead transitions. [2022-07-21 09:00:44,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 447 transitions, 2834 flow [2022-07-21 09:00:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-07-21 09:00:44,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-07-21 09:00:44,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-07-21 09:00:44,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-07-21 09:00:44,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:44,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-07-21 09:00:44,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,362 INFO L186 Difference]: Start difference. First operand has 399 places, 413 transitions, 2312 flow. Second operand 5 states and 1569 transitions. [2022-07-21 09:00:44,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 447 transitions, 2834 flow [2022-07-21 09:00:44,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 447 transitions, 2818 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:44,865 INFO L242 Difference]: Finished difference. Result has 395 places, 420 transitions, 2550 flow [2022-07-21 09:00:44,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2550, PETRI_PLACES=395, PETRI_TRANSITIONS=420} [2022-07-21 09:00:44,866 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 94 predicate places. [2022-07-21 09:00:44,866 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 420 transitions, 2550 flow [2022-07-21 09:00:44,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:44,867 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:44,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:44,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:00:44,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2134147165, now seen corresponding path program 2 times [2022-07-21 09:00:44,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:44,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931305386] [2022-07-21 09:00:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:44,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:45,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931305386] [2022-07-21 09:00:45,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931305386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:45,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:45,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 09:00:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074037810] [2022-07-21 09:00:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:45,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:00:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:00:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:00:45,426 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-07-21 09:00:45,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 420 transitions, 2550 flow. Second operand has 27 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:45,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:45,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-07-21 09:00:45,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:00,348 INFO L129 PetriNetUnfolder]: 18156/83905 cut-off events. [2022-07-21 09:01:00,348 INFO L130 PetriNetUnfolder]: For 56636/66431 co-relation queries the response was YES. [2022-07-21 09:01:01,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131427 conditions, 83905 events. 18156/83905 cut-off events. For 56636/66431 co-relation queries the response was YES. Maximal size of possible extension queue 3531. Compared 1400739 event pairs, 9714 based on Foata normal form. 51/72391 useless extension candidates. Maximal degree in co-relation 131376. Up to 11627 conditions per place. [2022-07-21 09:01:01,641 INFO L132 encePairwiseOnDemand]: 304/340 looper letters, 224 selfloop transitions, 38 changer transitions 12/575 dead transitions. [2022-07-21 09:01:01,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 575 transitions, 3478 flow [2022-07-21 09:01:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:01:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-21 09:01:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8252 transitions. [2022-07-21 09:01:01,653 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6934453781512605 [2022-07-21 09:01:01,654 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8252 transitions. [2022-07-21 09:01:01,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8252 transitions. [2022-07-21 09:01:01,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:01,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8252 transitions. [2022-07-21 09:01:01,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 235.77142857142857) internal successors, (8252), 35 states have internal predecessors, (8252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:01,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:01,681 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:01,681 INFO L186 Difference]: Start difference. First operand has 395 places, 420 transitions, 2550 flow. Second operand 35 states and 8252 transitions. [2022-07-21 09:01:01,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 575 transitions, 3478 flow [2022-07-21 09:01:01,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 575 transitions, 3426 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-21 09:01:01,985 INFO L242 Difference]: Finished difference. Result has 432 places, 422 transitions, 2601 flow [2022-07-21 09:01:01,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2601, PETRI_PLACES=432, PETRI_TRANSITIONS=422} [2022-07-21 09:01:01,987 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 131 predicate places. [2022-07-21 09:01:01,987 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 422 transitions, 2601 flow [2022-07-21 09:01:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:01,997 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:01,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:01:01,998 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:01:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1031024553, now seen corresponding path program 1 times [2022-07-21 09:01:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:01,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245107607] [2022-07-21 09:01:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:02,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:02,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245107607] [2022-07-21 09:01:02,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245107607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:02,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:02,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:01:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32572906] [2022-07-21 09:01:02,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:01:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:01:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:01:02,102 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-07-21 09:01:02,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 422 transitions, 2601 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:02,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:02,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-07-21 09:01:02,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:01:05,512 INFO L129 PetriNetUnfolder]: 1423/20257 cut-off events. [2022-07-21 09:01:05,512 INFO L130 PetriNetUnfolder]: For 45008/55062 co-relation queries the response was YES. [2022-07-21 09:01:05,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36484 conditions, 20257 events. 1423/20257 cut-off events. For 45008/55062 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 309809 event pairs, 125 based on Foata normal form. 569/19536 useless extension candidates. Maximal degree in co-relation 36428. Up to 3428 conditions per place. [2022-07-21 09:01:05,700 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 61 selfloop transitions, 3 changer transitions 6/436 dead transitions. [2022-07-21 09:01:05,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 436 transitions, 2774 flow [2022-07-21 09:01:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:01:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:01:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-07-21 09:01:05,702 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-07-21 09:01:05,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-07-21 09:01:05,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-07-21 09:01:05,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:01:05,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-07-21 09:01:05,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:05,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:05,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:05,708 INFO L186 Difference]: Start difference. First operand has 432 places, 422 transitions, 2601 flow. Second operand 7 states and 1964 transitions. [2022-07-21 09:01:05,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 436 transitions, 2774 flow [2022-07-21 09:01:05,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 436 transitions, 2701 flow, removed 2 selfloop flow, removed 31 redundant places. [2022-07-21 09:01:05,906 INFO L242 Difference]: Finished difference. Result has 410 places, 422 transitions, 2531 flow [2022-07-21 09:01:05,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2531, PETRI_PLACES=410, PETRI_TRANSITIONS=422} [2022-07-21 09:01:05,906 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 109 predicate places. [2022-07-21 09:01:05,907 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 422 transitions, 2531 flow [2022-07-21 09:01:05,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:05,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:01:05,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:01:05,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 09:01:05,907 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:01:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:01:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash -640724853, now seen corresponding path program 1 times [2022-07-21 09:01:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:01:05,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461257301] [2022-07-21 09:01:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:01:05,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:01:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:01:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:01:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:01:05,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461257301] [2022-07-21 09:01:05,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461257301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:01:05,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:01:05,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:01:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021476456] [2022-07-21 09:01:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:01:05,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:01:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:01:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:01:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:01:05,958 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-21 09:01:05,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 422 transitions, 2531 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:01:05,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:01:05,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-21 09:01:05,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand