./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/parallel-bakery-3.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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:43:25,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:43:25,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:43:25,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:43:25,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:43:25,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:43:25,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:43:25,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:43:25,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:43:25,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:43:25,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:43:25,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:43:25,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:43:25,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:43:25,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:43:25,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:43:25,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:43:25,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:43:25,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:43:25,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:43:25,773 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:43:25,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:43:25,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:43:25,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:43:25,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:43:25,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:43:25,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:43:25,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:43:25,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:43:25,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:43:25,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:43:25,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:43:25,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:43:25,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:43:25,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:43:25,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:43:25,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:43:25,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:43:25,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:43:25,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:43:25,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:43:25,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:43:25,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:43:25,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:43:25,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:43:25,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:43:25,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:43:25,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:43:25,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:43:25,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:43:25,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:43:25,831 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:43:25,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:43:25,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:43:25,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:43:25,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:43:25,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:43:25,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:43:25,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:43:25,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:43:25,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:43:25,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:43:25,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:43:25,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:43:25,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:43:25,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:43:25,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:43:25,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:43:25,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:43:25,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:43:25,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:43:25,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:43:25,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:43:25,838 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:43:25,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:43:25,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:43:25,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-07-22 21:43:26,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:43:26,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:43:26,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:43:26,077 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:43:26,078 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:43:26,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-07-22 21:43:26,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0245ba0/50452567945740628408fa9b4f841847/FLAGfcdef7633 [2022-07-22 21:43:26,530 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:43:26,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-07-22 21:43:26,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0245ba0/50452567945740628408fa9b4f841847/FLAGfcdef7633 [2022-07-22 21:43:26,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0245ba0/50452567945740628408fa9b4f841847 [2022-07-22 21:43:26,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:43:26,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:43:26,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:43:26,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:43:26,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:43:26,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b00d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26, skipping insertion in model container [2022-07-22 21:43:26,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:43:26,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:43:26,773 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/parallel-bakery-3.wvr.c[5426,5439] [2022-07-22 21:43:26,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:43:26,788 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:43:26,828 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/parallel-bakery-3.wvr.c[5426,5439] [2022-07-22 21:43:26,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:43:26,850 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:43:26,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26 WrapperNode [2022-07-22 21:43:26,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:43:26,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:43:26,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:43:26,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:43:26,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,897 INFO L137 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2022-07-22 21:43:26,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:43:26,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:43:26,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:43:26,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:43:26,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:43:26,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:43:26,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:43:26,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:43:26,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (1/1) ... [2022-07-22 21:43:26,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:43:26,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:43:26,968 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) [2022-07-22 21:43:26,974 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 [2022-07-22 21:43:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:43:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:43:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:43:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:43:26,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:43:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:43:26,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:43:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:43:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:43:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:43:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:43:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:43:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:43:26,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:43:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:43:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:43:26,999 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:43:27,072 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:43:27,074 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:43:27,337 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:43:27,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:43:27,480 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:43:27,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:43:27 BoogieIcfgContainer [2022-07-22 21:43:27,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:43:27,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:43:27,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:43:27,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:43:27,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:43:26" (1/3) ... [2022-07-22 21:43:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68772e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:43:27, skipping insertion in model container [2022-07-22 21:43:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:43:26" (2/3) ... [2022-07-22 21:43:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68772e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:43:27, skipping insertion in model container [2022-07-22 21:43:27,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:43:27" (3/3) ... [2022-07-22 21:43:27,491 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-07-22 21:43:27,497 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:43:27,512 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:43:27,513 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:43:27,513 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:43:27,570 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:43:27,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2022-07-22 21:43:27,684 INFO L129 PetriNetUnfolder]: 2/149 cut-off events. [2022-07-22 21:43:27,686 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:43:27,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-07-22 21:43:27,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2022-07-22 21:43:27,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2022-07-22 21:43:27,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:43:27,712 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@4c8d5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b635b25 [2022-07-22 21:43:27,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:43:27,738 INFO L129 PetriNetUnfolder]: 2/137 cut-off events. [2022-07-22 21:43:27,738 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:43:27,739 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:27,739 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:27,740 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)] === [2022-07-22 21:43:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1657276246, now seen corresponding path program 1 times [2022-07-22 21:43:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:27,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344349085] [2022-07-22 21:43:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:28,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:28,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344349085] [2022-07-22 21:43:28,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344349085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:28,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:28,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:43:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790578473] [2022-07-22 21:43:28,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:28,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:43:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:43:28,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:43:28,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-07-22 21:43:28,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:28,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:28,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-07-22 21:43:28,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:29,868 INFO L129 PetriNetUnfolder]: 2149/5092 cut-off events. [2022-07-22 21:43:29,868 INFO L130 PetriNetUnfolder]: For 606/606 co-relation queries the response was YES. [2022-07-22 21:43:29,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 5092 events. 2149/5092 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 40271 event pairs, 1260 based on Foata normal form. 7/5040 useless extension candidates. Maximal degree in co-relation 8682. Up to 1966 conditions per place. [2022-07-22 21:43:29,917 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 152 selfloop transitions, 21 changer transitions 23/281 dead transitions. [2022-07-22 21:43:29,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 281 transitions, 1026 flow [2022-07-22 21:43:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:43:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:43:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2262 transitions. [2022-07-22 21:43:29,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7086466165413534 [2022-07-22 21:43:29,940 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2262 transitions. [2022-07-22 21:43:29,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2262 transitions. [2022-07-22 21:43:29,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:29,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2262 transitions. [2022-07-22 21:43:29,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 107.71428571428571) internal successors, (2262), 21 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:29,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:29,967 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:29,968 INFO L186 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2262 transitions. [2022-07-22 21:43:29,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 281 transitions, 1026 flow [2022-07-22 21:43:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 281 transitions, 978 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:43:29,986 INFO L242 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2022-07-22 21:43:29,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-07-22 21:43:29,991 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2022-07-22 21:43:29,991 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2022-07-22 21:43:29,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:29,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:29,993 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:29,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:43:29,993 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)] === [2022-07-22 21:43:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash -270808544, now seen corresponding path program 2 times [2022-07-22 21:43:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:29,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930549187] [2022-07-22 21:43:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930549187] [2022-07-22 21:43:30,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930549187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:30,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:30,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:43:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496098885] [2022-07-22 21:43:30,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:30,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:43:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:43:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:43:30,155 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2022-07-22 21:43:30,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:30,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:30,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2022-07-22 21:43:30,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:30,553 INFO L129 PetriNetUnfolder]: 1293/3256 cut-off events. [2022-07-22 21:43:30,554 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-07-22 21:43:30,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 3256 events. 1293/3256 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 24724 event pairs, 840 based on Foata normal form. 68/3274 useless extension candidates. Maximal degree in co-relation 5915. Up to 1387 conditions per place. [2022-07-22 21:43:30,579 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 44 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-07-22 21:43:30,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 506 flow [2022-07-22 21:43:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:43:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:43:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-07-22 21:43:30,581 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-22 21:43:30,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-07-22 21:43:30,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-07-22 21:43:30,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:30,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-07-22 21:43:30,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:30,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:30,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:30,586 INFO L186 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 3 states and 399 transitions. [2022-07-22 21:43:30,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 506 flow [2022-07-22 21:43:30,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 164 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-22 21:43:30,595 INFO L242 Difference]: Finished difference. Result has 152 places, 150 transitions, 384 flow [2022-07-22 21:43:30,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2022-07-22 21:43:30,596 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-07-22 21:43:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 384 flow [2022-07-22 21:43:30,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:30,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:30,597 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:30,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:43:30,598 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)] === [2022-07-22 21:43:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash 38453412, now seen corresponding path program 3 times [2022-07-22 21:43:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:30,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437457811] [2022-07-22 21:43:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:30,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:30,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437457811] [2022-07-22 21:43:30,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437457811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:30,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:30,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:43:30,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162870707] [2022-07-22 21:43:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:43:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:43:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:43:30,909 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-07-22 21:43:30,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:30,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:30,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-07-22 21:43:30,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:32,128 INFO L129 PetriNetUnfolder]: 2236/5811 cut-off events. [2022-07-22 21:43:32,128 INFO L130 PetriNetUnfolder]: For 845/845 co-relation queries the response was YES. [2022-07-22 21:43:32,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11273 conditions, 5811 events. 2236/5811 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 49859 event pairs, 1201 based on Foata normal form. 1/5766 useless extension candidates. Maximal degree in co-relation 8233. Up to 1905 conditions per place. [2022-07-22 21:43:32,164 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 168 selfloop transitions, 32 changer transitions 18/303 dead transitions. [2022-07-22 21:43:32,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 1234 flow [2022-07-22 21:43:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:43:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:43:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1668 transitions. [2022-07-22 21:43:32,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7315789473684211 [2022-07-22 21:43:32,169 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1668 transitions. [2022-07-22 21:43:32,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1668 transitions. [2022-07-22 21:43:32,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:32,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1668 transitions. [2022-07-22 21:43:32,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.2) internal successors, (1668), 15 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:32,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:32,178 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:32,178 INFO L186 Difference]: Start difference. First operand has 152 places, 150 transitions, 384 flow. Second operand 15 states and 1668 transitions. [2022-07-22 21:43:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 1234 flow [2022-07-22 21:43:32,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 303 transitions, 1230 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:32,188 INFO L242 Difference]: Finished difference. Result has 172 places, 171 transitions, 607 flow [2022-07-22 21:43:32,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=607, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2022-07-22 21:43:32,190 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-07-22 21:43:32,190 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 607 flow [2022-07-22 21:43:32,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:32,191 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:32,191 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:32,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:43:32,191 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)] === [2022-07-22 21:43:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 127245472, now seen corresponding path program 4 times [2022-07-22 21:43:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:32,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440966812] [2022-07-22 21:43:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:32,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440966812] [2022-07-22 21:43:32,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440966812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:32,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:32,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:43:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375091452] [2022-07-22 21:43:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:43:32,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:43:32,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:43:32,412 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:32,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 607 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:32,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:32,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:32,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:34,043 INFO L129 PetriNetUnfolder]: 4602/10643 cut-off events. [2022-07-22 21:43:34,043 INFO L130 PetriNetUnfolder]: For 2038/2076 co-relation queries the response was YES. [2022-07-22 21:43:34,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21634 conditions, 10643 events. 4602/10643 cut-off events. For 2038/2076 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 98458 event pairs, 1115 based on Foata normal form. 151/10489 useless extension candidates. Maximal degree in co-relation 21548. Up to 3406 conditions per place. [2022-07-22 21:43:34,215 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 157 selfloop transitions, 42 changer transitions 8/334 dead transitions. [2022-07-22 21:43:34,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 334 transitions, 1381 flow [2022-07-22 21:43:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:43:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:43:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1758 transitions. [2022-07-22 21:43:34,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7710526315789473 [2022-07-22 21:43:34,221 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1758 transitions. [2022-07-22 21:43:34,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1758 transitions. [2022-07-22 21:43:34,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:34,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1758 transitions. [2022-07-22 21:43:34,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 117.2) internal successors, (1758), 15 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:34,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:34,234 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:34,234 INFO L186 Difference]: Start difference. First operand has 172 places, 171 transitions, 607 flow. Second operand 15 states and 1758 transitions. [2022-07-22 21:43:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 334 transitions, 1381 flow [2022-07-22 21:43:34,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 334 transitions, 1367 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-22 21:43:34,264 INFO L242 Difference]: Finished difference. Result has 188 places, 210 transitions, 888 flow [2022-07-22 21:43:34,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=888, PETRI_PLACES=188, PETRI_TRANSITIONS=210} [2022-07-22 21:43:34,270 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 42 predicate places. [2022-07-22 21:43:34,272 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 210 transitions, 888 flow [2022-07-22 21:43:34,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:34,273 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:34,273 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:34,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:43:34,273 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)] === [2022-07-22 21:43:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash 432067320, now seen corresponding path program 5 times [2022-07-22 21:43:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:34,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171462700] [2022-07-22 21:43:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:34,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:34,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171462700] [2022-07-22 21:43:34,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171462700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:34,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:34,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:43:34,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374550311] [2022-07-22 21:43:34,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:34,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:43:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:43:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:43:34,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-07-22 21:43:34,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 210 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:34,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:34,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-07-22 21:43:34,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:36,845 INFO L129 PetriNetUnfolder]: 6121/13696 cut-off events. [2022-07-22 21:43:36,845 INFO L130 PetriNetUnfolder]: For 18955/18967 co-relation queries the response was YES. [2022-07-22 21:43:36,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40456 conditions, 13696 events. 6121/13696 cut-off events. For 18955/18967 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 127955 event pairs, 2601 based on Foata normal form. 8/13577 useless extension candidates. Maximal degree in co-relation 39541. Up to 4690 conditions per place. [2022-07-22 21:43:36,966 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 241 selfloop transitions, 37 changer transitions 11/389 dead transitions. [2022-07-22 21:43:36,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 389 transitions, 2344 flow [2022-07-22 21:43:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:43:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:43:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1666 transitions. [2022-07-22 21:43:36,970 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.730701754385965 [2022-07-22 21:43:36,971 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1666 transitions. [2022-07-22 21:43:36,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1666 transitions. [2022-07-22 21:43:36,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:36,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1666 transitions. [2022-07-22 21:43:36,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:36,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:36,980 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:36,980 INFO L186 Difference]: Start difference. First operand has 188 places, 210 transitions, 888 flow. Second operand 15 states and 1666 transitions. [2022-07-22 21:43:36,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 389 transitions, 2344 flow [2022-07-22 21:43:37,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 389 transitions, 2340 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:37,145 INFO L242 Difference]: Finished difference. Result has 206 places, 217 transitions, 1044 flow [2022-07-22 21:43:37,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=206, PETRI_TRANSITIONS=217} [2022-07-22 21:43:37,147 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 60 predicate places. [2022-07-22 21:43:37,147 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 217 transitions, 1044 flow [2022-07-22 21:43:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:37,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:37,148 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:37,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:43:37,148 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)] === [2022-07-22 21:43:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash -171380418, now seen corresponding path program 6 times [2022-07-22 21:43:37,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:37,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803733086] [2022-07-22 21:43:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:37,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803733086] [2022-07-22 21:43:37,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803733086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:37,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:37,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:43:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895490467] [2022-07-22 21:43:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:37,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:43:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:43:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:43:37,204 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2022-07-22 21:43:37,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 217 transitions, 1044 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:37,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:37,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2022-07-22 21:43:37,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:38,326 INFO L129 PetriNetUnfolder]: 3503/9234 cut-off events. [2022-07-22 21:43:38,326 INFO L130 PetriNetUnfolder]: For 10797/10859 co-relation queries the response was YES. [2022-07-22 21:43:38,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26076 conditions, 9234 events. 3503/9234 cut-off events. For 10797/10859 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 88143 event pairs, 1929 based on Foata normal form. 240/9256 useless extension candidates. Maximal degree in co-relation 25980. Up to 3823 conditions per place. [2022-07-22 21:43:38,402 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 82 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-07-22 21:43:38,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 242 transitions, 1343 flow [2022-07-22 21:43:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:43:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:43:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-07-22 21:43:38,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-22 21:43:38,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-07-22 21:43:38,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-07-22 21:43:38,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:38,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-07-22 21:43:38,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:38,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:38,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:38,408 INFO L186 Difference]: Start difference. First operand has 206 places, 217 transitions, 1044 flow. Second operand 3 states and 399 transitions. [2022-07-22 21:43:38,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 242 transitions, 1343 flow [2022-07-22 21:43:38,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 242 transitions, 1286 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-07-22 21:43:38,490 INFO L242 Difference]: Finished difference. Result has 200 places, 214 transitions, 980 flow [2022-07-22 21:43:38,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=980, PETRI_PLACES=200, PETRI_TRANSITIONS=214} [2022-07-22 21:43:38,491 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 54 predicate places. [2022-07-22 21:43:38,491 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 214 transitions, 980 flow [2022-07-22 21:43:38,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:38,491 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:38,492 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:38,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:43:38,492 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)] === [2022-07-22 21:43:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1970926978, now seen corresponding path program 7 times [2022-07-22 21:43:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:38,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031627260] [2022-07-22 21:43:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:38,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:38,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031627260] [2022-07-22 21:43:38,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031627260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:38,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:38,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:43:38,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729695542] [2022-07-22 21:43:38,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:38,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:43:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:43:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:43:38,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:38,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 214 transitions, 980 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:38,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:38,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:38,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:40,281 INFO L129 PetriNetUnfolder]: 4448/11162 cut-off events. [2022-07-22 21:43:40,282 INFO L130 PetriNetUnfolder]: For 13290/13465 co-relation queries the response was YES. [2022-07-22 21:43:40,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32104 conditions, 11162 events. 4448/11162 cut-off events. For 13290/13465 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 109101 event pairs, 1501 based on Foata normal form. 42/10889 useless extension candidates. Maximal degree in co-relation 31784. Up to 6463 conditions per place. [2022-07-22 21:43:40,366 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 108 selfloop transitions, 11 changer transitions 25/278 dead transitions. [2022-07-22 21:43:40,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 278 transitions, 1575 flow [2022-07-22 21:43:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:43:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:43:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1026 transitions. [2022-07-22 21:43:40,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-22 21:43:40,370 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1026 transitions. [2022-07-22 21:43:40,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1026 transitions. [2022-07-22 21:43:40,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:40,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1026 transitions. [2022-07-22 21:43:40,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:40,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:40,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:40,376 INFO L186 Difference]: Start difference. First operand has 200 places, 214 transitions, 980 flow. Second operand 9 states and 1026 transitions. [2022-07-22 21:43:40,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 278 transitions, 1575 flow [2022-07-22 21:43:40,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 278 transitions, 1571 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:40,487 INFO L242 Difference]: Finished difference. Result has 211 places, 219 transitions, 1064 flow [2022-07-22 21:43:40,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1064, PETRI_PLACES=211, PETRI_TRANSITIONS=219} [2022-07-22 21:43:40,488 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 65 predicate places. [2022-07-22 21:43:40,489 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 219 transitions, 1064 flow [2022-07-22 21:43:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:40,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:40,489 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:40,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:43:40,490 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)] === [2022-07-22 21:43:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:40,490 INFO L85 PathProgramCache]: Analyzing trace with hash -791673240, now seen corresponding path program 8 times [2022-07-22 21:43:40,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:40,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086382111] [2022-07-22 21:43:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:40,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:40,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:40,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086382111] [2022-07-22 21:43:40,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086382111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:40,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:40,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:43:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277416803] [2022-07-22 21:43:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:40,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:43:40,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:43:40,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:43:40,726 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:40,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 219 transitions, 1064 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:40,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:40,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:40,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:42,432 INFO L129 PetriNetUnfolder]: 4687/11972 cut-off events. [2022-07-22 21:43:42,432 INFO L130 PetriNetUnfolder]: For 25398/25648 co-relation queries the response was YES. [2022-07-22 21:43:42,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38434 conditions, 11972 events. 4687/11972 cut-off events. For 25398/25648 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 118985 event pairs, 1682 based on Foata normal form. 80/11706 useless extension candidates. Maximal degree in co-relation 38075. Up to 6685 conditions per place. [2022-07-22 21:43:42,517 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 123 selfloop transitions, 45 changer transitions 0/302 dead transitions. [2022-07-22 21:43:42,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 302 transitions, 1927 flow [2022-07-22 21:43:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:43:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:43:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1042 transitions. [2022-07-22 21:43:42,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616959064327485 [2022-07-22 21:43:42,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1042 transitions. [2022-07-22 21:43:42,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1042 transitions. [2022-07-22 21:43:42,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:42,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1042 transitions. [2022-07-22 21:43:42,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.77777777777777) internal successors, (1042), 9 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:42,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:42,528 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:42,528 INFO L186 Difference]: Start difference. First operand has 211 places, 219 transitions, 1064 flow. Second operand 9 states and 1042 transitions. [2022-07-22 21:43:42,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 302 transitions, 1927 flow [2022-07-22 21:43:42,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 302 transitions, 1871 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-07-22 21:43:42,688 INFO L242 Difference]: Finished difference. Result has 216 places, 255 transitions, 1520 flow [2022-07-22 21:43:42,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1520, PETRI_PLACES=216, PETRI_TRANSITIONS=255} [2022-07-22 21:43:42,691 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 70 predicate places. [2022-07-22 21:43:42,691 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 255 transitions, 1520 flow [2022-07-22 21:43:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:42,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:42,692 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:43:42,692 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)] === [2022-07-22 21:43:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -265574646, now seen corresponding path program 9 times [2022-07-22 21:43:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065041676] [2022-07-22 21:43:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:42,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:42,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065041676] [2022-07-22 21:43:42,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065041676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:42,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:42,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:43:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833586136] [2022-07-22 21:43:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:43:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:42,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:43:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:43:42,941 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:42,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 255 transitions, 1520 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:42,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:42,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:42,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:45,013 INFO L129 PetriNetUnfolder]: 5212/13168 cut-off events. [2022-07-22 21:43:45,014 INFO L130 PetriNetUnfolder]: For 30665/31079 co-relation queries the response was YES. [2022-07-22 21:43:45,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43603 conditions, 13168 events. 5212/13168 cut-off events. For 30665/31079 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 132839 event pairs, 2958 based on Foata normal form. 60/12811 useless extension candidates. Maximal degree in co-relation 43226. Up to 7618 conditions per place. [2022-07-22 21:43:45,104 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 167 selfloop transitions, 48 changer transitions 33/382 dead transitions. [2022-07-22 21:43:45,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 382 transitions, 2795 flow [2022-07-22 21:43:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:43:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:43:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-22 21:43:45,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7586032388663968 [2022-07-22 21:43:45,110 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-22 21:43:45,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-22 21:43:45,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:45,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-22 21:43:45,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:45,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 152.0) internal successors, (2128), 14 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:45,117 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 152.0) internal successors, (2128), 14 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:45,118 INFO L186 Difference]: Start difference. First operand has 216 places, 255 transitions, 1520 flow. Second operand 13 states and 1499 transitions. [2022-07-22 21:43:45,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 382 transitions, 2795 flow [2022-07-22 21:43:45,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 382 transitions, 2725 flow, removed 33 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:45,308 INFO L242 Difference]: Finished difference. Result has 235 places, 286 transitions, 1969 flow [2022-07-22 21:43:45,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1969, PETRI_PLACES=235, PETRI_TRANSITIONS=286} [2022-07-22 21:43:45,309 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 89 predicate places. [2022-07-22 21:43:45,309 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 286 transitions, 1969 flow [2022-07-22 21:43:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:45,310 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:45,310 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:45,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:43:45,311 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)] === [2022-07-22 21:43:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash 720952562, now seen corresponding path program 10 times [2022-07-22 21:43:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:45,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212818051] [2022-07-22 21:43:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:45,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:45,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212818051] [2022-07-22 21:43:45,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212818051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:45,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:45,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 21:43:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153635497] [2022-07-22 21:43:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:45,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:43:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:43:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:43:45,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:45,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 286 transitions, 1969 flow. Second operand has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:45,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:45,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:45,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:50,186 INFO L129 PetriNetUnfolder]: 11750/27633 cut-off events. [2022-07-22 21:43:50,187 INFO L130 PetriNetUnfolder]: For 92125/92883 co-relation queries the response was YES. [2022-07-22 21:43:50,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98486 conditions, 27633 events. 11750/27633 cut-off events. For 92125/92883 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 300527 event pairs, 2570 based on Foata normal form. 675/27637 useless extension candidates. Maximal degree in co-relation 97654. Up to 5636 conditions per place. [2022-07-22 21:43:50,425 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 344 selfloop transitions, 221 changer transitions 35/734 dead transitions. [2022-07-22 21:43:50,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 734 transitions, 6120 flow [2022-07-22 21:43:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 21:43:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-22 21:43:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2999 transitions. [2022-07-22 21:43:50,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7892105263157895 [2022-07-22 21:43:50,431 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2999 transitions. [2022-07-22 21:43:50,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2999 transitions. [2022-07-22 21:43:50,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:50,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2999 transitions. [2022-07-22 21:43:50,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 119.96) internal successors, (2999), 25 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:50,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:50,442 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:50,442 INFO L186 Difference]: Start difference. First operand has 235 places, 286 transitions, 1969 flow. Second operand 25 states and 2999 transitions. [2022-07-22 21:43:50,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 734 transitions, 6120 flow [2022-07-22 21:43:51,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 734 transitions, 5914 flow, removed 101 selfloop flow, removed 5 redundant places. [2022-07-22 21:43:51,136 INFO L242 Difference]: Finished difference. Result has 272 places, 456 transitions, 4403 flow [2022-07-22 21:43:51,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4403, PETRI_PLACES=272, PETRI_TRANSITIONS=456} [2022-07-22 21:43:51,137 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 126 predicate places. [2022-07-22 21:43:51,137 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 456 transitions, 4403 flow [2022-07-22 21:43:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:51,138 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:51,139 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:51,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:43:51,139 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)] === [2022-07-22 21:43:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1634048496, now seen corresponding path program 11 times [2022-07-22 21:43:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:51,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137223549] [2022-07-22 21:43:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:51,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:51,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137223549] [2022-07-22 21:43:51,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137223549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:51,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:51,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:43:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575416999] [2022-07-22 21:43:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:43:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:43:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:43:51,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:51,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 456 transitions, 4403 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:51,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:51,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:51,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:56,655 INFO L129 PetriNetUnfolder]: 11564/28030 cut-off events. [2022-07-22 21:43:56,656 INFO L130 PetriNetUnfolder]: For 228079/229884 co-relation queries the response was YES. [2022-07-22 21:43:56,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132429 conditions, 28030 events. 11564/28030 cut-off events. For 228079/229884 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 311777 event pairs, 6316 based on Foata normal form. 152/27522 useless extension candidates. Maximal degree in co-relation 131568. Up to 17780 conditions per place. [2022-07-22 21:43:56,937 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 304 selfloop transitions, 69 changer transitions 29/536 dead transitions. [2022-07-22 21:43:56,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 536 transitions, 5947 flow [2022-07-22 21:43:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:43:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:43:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1267 transitions. [2022-07-22 21:43:56,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7577751196172249 [2022-07-22 21:43:56,940 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1267 transitions. [2022-07-22 21:43:56,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1267 transitions. [2022-07-22 21:43:56,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:56,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1267 transitions. [2022-07-22 21:43:56,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.18181818181819) internal successors, (1267), 11 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:56,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:56,944 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:56,945 INFO L186 Difference]: Start difference. First operand has 272 places, 456 transitions, 4403 flow. Second operand 11 states and 1267 transitions. [2022-07-22 21:43:56,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 536 transitions, 5947 flow [2022-07-22 21:43:58,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 536 transitions, 5574 flow, removed 180 selfloop flow, removed 3 redundant places. [2022-07-22 21:43:58,524 INFO L242 Difference]: Finished difference. Result has 282 places, 455 transitions, 4181 flow [2022-07-22 21:43:58,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=282, PETRI_TRANSITIONS=455} [2022-07-22 21:43:58,524 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 136 predicate places. [2022-07-22 21:43:58,524 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 455 transitions, 4181 flow [2022-07-22 21:43:58,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:58,525 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:58,525 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:43:58,525 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)] === [2022-07-22 21:43:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash -968586136, now seen corresponding path program 12 times [2022-07-22 21:43:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:58,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127593601] [2022-07-22 21:43:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127593601] [2022-07-22 21:43:58,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127593601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:58,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:58,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:43:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512799932] [2022-07-22 21:43:58,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:43:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:43:58,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:43:58,798 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:43:58,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 455 transitions, 4181 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:58,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:58,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:43:58,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:04,665 INFO L129 PetriNetUnfolder]: 12060/30022 cut-off events. [2022-07-22 21:44:04,666 INFO L130 PetriNetUnfolder]: For 239066/240600 co-relation queries the response was YES. [2022-07-22 21:44:04,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138037 conditions, 30022 events. 12060/30022 cut-off events. For 239066/240600 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 342170 event pairs, 4885 based on Foata normal form. 283/29760 useless extension candidates. Maximal degree in co-relation 136892. Up to 13836 conditions per place. [2022-07-22 21:44:04,984 INFO L132 encePairwiseOnDemand]: 134/152 looper letters, 415 selfloop transitions, 122 changer transitions 9/680 dead transitions. [2022-07-22 21:44:04,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 680 transitions, 7756 flow [2022-07-22 21:44:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:44:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:44:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1390 transitions. [2022-07-22 21:44:04,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620614035087719 [2022-07-22 21:44:04,987 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1390 transitions. [2022-07-22 21:44:04,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1390 transitions. [2022-07-22 21:44:04,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:04,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1390 transitions. [2022-07-22 21:44:04,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.83333333333333) internal successors, (1390), 12 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:04,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:04,992 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:04,992 INFO L186 Difference]: Start difference. First operand has 282 places, 455 transitions, 4181 flow. Second operand 12 states and 1390 transitions. [2022-07-22 21:44:04,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 680 transitions, 7756 flow [2022-07-22 21:44:06,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 680 transitions, 7534 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-07-22 21:44:06,026 INFO L242 Difference]: Finished difference. Result has 289 places, 531 transitions, 5515 flow [2022-07-22 21:44:06,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5515, PETRI_PLACES=289, PETRI_TRANSITIONS=531} [2022-07-22 21:44:06,027 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 143 predicate places. [2022-07-22 21:44:06,027 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 531 transitions, 5515 flow [2022-07-22 21:44:06,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:06,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:06,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:06,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:44:06,029 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)] === [2022-07-22 21:44:06,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash 832620048, now seen corresponding path program 13 times [2022-07-22 21:44:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:06,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223674619] [2022-07-22 21:44:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:06,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:06,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223674619] [2022-07-22 21:44:06,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223674619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:06,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:06,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 21:44:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651137327] [2022-07-22 21:44:06,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:06,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:44:06,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:44:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:44:06,237 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-22 21:44:06,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 531 transitions, 5515 flow. Second operand has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:06,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:06,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-22 21:44:06,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:15,380 INFO L129 PetriNetUnfolder]: 16803/43939 cut-off events. [2022-07-22 21:44:15,380 INFO L130 PetriNetUnfolder]: For 397386/401045 co-relation queries the response was YES. [2022-07-22 21:44:15,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200792 conditions, 43939 events. 16803/43939 cut-off events. For 397386/401045 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 549645 event pairs, 4328 based on Foata normal form. 1180/44290 useless extension candidates. Maximal degree in co-relation 199114. Up to 6885 conditions per place. [2022-07-22 21:44:16,098 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 442 selfloop transitions, 338 changer transitions 26/940 dead transitions. [2022-07-22 21:44:16,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 940 transitions, 12246 flow [2022-07-22 21:44:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:44:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:44:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2096 transitions. [2022-07-22 21:44:16,102 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-22 21:44:16,102 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2096 transitions. [2022-07-22 21:44:16,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2096 transitions. [2022-07-22 21:44:16,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:16,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2096 transitions. [2022-07-22 21:44:16,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 116.44444444444444) internal successors, (2096), 18 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:16,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:16,109 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:16,109 INFO L186 Difference]: Start difference. First operand has 289 places, 531 transitions, 5515 flow. Second operand 18 states and 2096 transitions. [2022-07-22 21:44:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 940 transitions, 12246 flow