./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-trans.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/chl-word-trans.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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:42:43,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:42:43,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:42:43,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:42:43,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:42:43,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:42:43,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:42:43,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:42:43,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:42:43,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:42:43,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:42:43,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:42:43,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:42:43,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:42:43,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:42:43,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:42:43,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:42:43,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:42:43,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:42:43,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:42:43,869 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:42:43,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:42:43,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:42:43,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:42:43,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:42:43,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:42:43,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:42:43,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:42:43,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:42:43,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:42:43,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:42:43,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:42:43,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:42:43,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:42:43,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:42:43,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:42:43,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:42:43,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:42:43,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:42:43,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:42:43,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:42:43,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:42:43,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:42:43,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:42:43,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:42:43,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:42:43,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:42:43,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:42:43,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:42:43,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:42:43,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:42:43,924 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:42:43,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:42:43,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:42:43,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:42:43,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:42:43,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:42:43,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:42:43,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:42:43,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:42:43,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:42:43,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:42:43,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:42:43,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:42:43,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:42:43,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:42:43,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:42:43,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:42:43,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:42:43,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:42:43,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:42:43,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:42:43,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:42:43,929 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:42:43,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:42:43,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:42:43,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-07-22 21:42:44,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:42:44,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:42:44,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:42:44,181 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:42:44,181 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:42:44,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-07-22 21:42:44,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c7f8f45/138af0ce7fba476e87a9f48355d56b6d/FLAG2d1f753aa [2022-07-22 21:42:44,640 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:42:44,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-07-22 21:42:44,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c7f8f45/138af0ce7fba476e87a9f48355d56b6d/FLAG2d1f753aa [2022-07-22 21:42:44,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c7f8f45/138af0ce7fba476e87a9f48355d56b6d [2022-07-22 21:42:44,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:42:44,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:42:44,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:42:44,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:42:44,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:42:44,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:44,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf1a467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44, skipping insertion in model container [2022-07-22 21:42:44,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:44,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:42:44,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:42:44,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-07-22 21:42:44,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:42:44,894 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:42:44,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-07-22 21:42:44,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:42:44,938 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:42:44,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44 WrapperNode [2022-07-22 21:42:44,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:42:44,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:42:44,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:42:44,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:42:44,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:44,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:44,988 INFO L137 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 172 [2022-07-22 21:42:44,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:42:44,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:42:44,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:42:44,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:42:45,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:42:45,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:42:45,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:42:45,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:42:45,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (1/1) ... [2022-07-22 21:42:45,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:42:45,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:42:45,088 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 21:42:45,107 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 21:42:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:42:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:42:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:42:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:42:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:42:45,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:42:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:42:45,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:42:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:42:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:42:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:42:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:42:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:42:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:42:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:42:45,143 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 21:42:45,221 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:42:45,223 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:42:45,628 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:42:45,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:42:45,640 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 21:42:45,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:45 BoogieIcfgContainer [2022-07-22 21:42:45,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:42:45,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:42:45,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:42:45,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:42:45,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:42:44" (1/3) ... [2022-07-22 21:42:45,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52268da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:45, skipping insertion in model container [2022-07-22 21:42:45,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:44" (2/3) ... [2022-07-22 21:42:45,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52268da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:45, skipping insertion in model container [2022-07-22 21:42:45,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:45" (3/3) ... [2022-07-22 21:42:45,657 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-07-22 21:42:45,662 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:42:45,670 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:42:45,670 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:42:45,670 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:42:45,759 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:42:45,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 308 places, 332 transitions, 688 flow [2022-07-22 21:42:45,939 INFO L129 PetriNetUnfolder]: 34/329 cut-off events. [2022-07-22 21:42:45,940 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:42:45,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 329 events. 34/329 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 507 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-07-22 21:42:45,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 332 transitions, 688 flow [2022-07-22 21:42:45,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 318 transitions, 654 flow [2022-07-22 21:42:45,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:42:45,979 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@75617e93, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@444db1ca [2022-07-22 21:42:45,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:42:46,036 INFO L129 PetriNetUnfolder]: 34/317 cut-off events. [2022-07-22 21:42:46,037 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:42:46,037 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:46,038 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:46,039 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 21:42:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash -486084204, now seen corresponding path program 1 times [2022-07-22 21:42:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556448747] [2022-07-22 21:42:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:46,382 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 21:42:46,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556448747] [2022-07-22 21:42:46,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556448747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:46,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:46,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:42:46,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205863187] [2022-07-22 21:42:46,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:46,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:42:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:42:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:42:46,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 332 [2022-07-22 21:42:46,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 21:42:46,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:46,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 332 [2022-07-22 21:42:46,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:46,496 INFO L129 PetriNetUnfolder]: 21/305 cut-off events. [2022-07-22 21:42:46,496 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-22 21:42:46,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 305 events. 21/305 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 499 event pairs, 0 based on Foata normal form. 19/296 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-07-22 21:42:46,501 INFO L132 encePairwiseOnDemand]: 319/332 looper letters, 6 selfloop transitions, 0 changer transitions 7/305 dead transitions. [2022-07-22 21:42:46,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 305 transitions, 640 flow [2022-07-22 21:42:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:42:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:42:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 643 transitions. [2022-07-22 21:42:46,526 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9683734939759037 [2022-07-22 21:42:46,526 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 643 transitions. [2022-07-22 21:42:46,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 643 transitions. [2022-07-22 21:42:46,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:46,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 643 transitions. [2022-07-22 21:42:46,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 321.5) internal successors, (643), 2 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 21:42:46,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 21:42:46,548 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 21:42:46,550 INFO L186 Difference]: Start difference. First operand has 294 places, 318 transitions, 654 flow. Second operand 2 states and 643 transitions. [2022-07-22 21:42:46,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 305 transitions, 640 flow [2022-07-22 21:42:46,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 305 transitions, 628 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:42:46,565 INFO L242 Difference]: Finished difference. Result has 289 places, 298 transitions, 602 flow [2022-07-22 21:42:46,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=602, PETRI_PLACES=289, PETRI_TRANSITIONS=298} [2022-07-22 21:42:46,570 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -5 predicate places. [2022-07-22 21:42:46,571 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 298 transitions, 602 flow [2022-07-22 21:42:46,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 21:42:46,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:46,572 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:46,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:42:46,573 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 21:42:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1734824051, now seen corresponding path program 1 times [2022-07-22 21:42:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800176064] [2022-07-22 21:42:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:46,802 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 21:42:46,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800176064] [2022-07-22 21:42:46,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800176064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:46,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:46,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27788788] [2022-07-22 21:42:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:46,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-07-22 21:42:46,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 298 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 21:42:46,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:46,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-07-22 21:42:46,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:46,910 INFO L129 PetriNetUnfolder]: 40/410 cut-off events. [2022-07-22 21:42:46,910 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-22 21:42:46,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 410 events. 40/410 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1086 event pairs, 6 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 451. Up to 22 conditions per place. [2022-07-22 21:42:46,917 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 13 selfloop transitions, 2 changer transitions 0/303 dead transitions. [2022-07-22 21:42:46,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 303 transitions, 646 flow [2022-07-22 21:42:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2022-07-22 21:42:46,920 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9437751004016064 [2022-07-22 21:42:46,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2022-07-22 21:42:46,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2022-07-22 21:42:46,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:46,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2022-07-22 21:42:46,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 21:42:46,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 21:42:46,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 21:42:46,927 INFO L186 Difference]: Start difference. First operand has 289 places, 298 transitions, 602 flow. Second operand 3 states and 940 transitions. [2022-07-22 21:42:46,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 303 transitions, 646 flow [2022-07-22 21:42:46,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 303 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:42:46,938 INFO L242 Difference]: Finished difference. Result has 285 places, 298 transitions, 610 flow [2022-07-22 21:42:46,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=285, PETRI_TRANSITIONS=298} [2022-07-22 21:42:46,940 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -9 predicate places. [2022-07-22 21:42:46,940 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 298 transitions, 610 flow [2022-07-22 21:42:46,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 21:42:46,941 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:46,942 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:46,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:42:46,942 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 21:42:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -255056521, now seen corresponding path program 1 times [2022-07-22 21:42:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345510451] [2022-07-22 21:42:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:46,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:47,099 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 21:42:47,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:47,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345510451] [2022-07-22 21:42:47,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345510451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:47,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:47,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:47,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667173740] [2022-07-22 21:42:47,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:47,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:47,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:47,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-07-22 21:42:47,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 298 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 21:42:47,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:47,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-07-22 21:42:47,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:47,196 INFO L129 PetriNetUnfolder]: 49/480 cut-off events. [2022-07-22 21:42:47,196 INFO L130 PetriNetUnfolder]: For 23/27 co-relation queries the response was YES. [2022-07-22 21:42:47,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 480 events. 49/480 cut-off events. For 23/27 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1436 event pairs, 9 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 532. Up to 30 conditions per place. [2022-07-22 21:42:47,200 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 12 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2022-07-22 21:42:47,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 302 transitions, 649 flow [2022-07-22 21:42:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2022-07-22 21:42:47,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9427710843373494 [2022-07-22 21:42:47,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 939 transitions. [2022-07-22 21:42:47,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 939 transitions. [2022-07-22 21:42:47,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:47,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 939 transitions. [2022-07-22 21:42:47,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 21:42:47,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 21:42:47,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 21:42:47,211 INFO L186 Difference]: Start difference. First operand has 285 places, 298 transitions, 610 flow. Second operand 3 states and 939 transitions. [2022-07-22 21:42:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 302 transitions, 649 flow [2022-07-22 21:42:47,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 302 transitions, 645 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:47,217 INFO L242 Difference]: Finished difference. Result has 286 places, 298 transitions, 614 flow [2022-07-22 21:42:47,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=286, PETRI_TRANSITIONS=298} [2022-07-22 21:42:47,219 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -8 predicate places. [2022-07-22 21:42:47,220 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 298 transitions, 614 flow [2022-07-22 21:42:47,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 21:42:47,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:47,221 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:47,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:42:47,221 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 21:42:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:47,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1328800531, now seen corresponding path program 1 times [2022-07-22 21:42:47,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292630311] [2022-07-22 21:42:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:47,322 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 21:42:47,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:47,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292630311] [2022-07-22 21:42:47,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292630311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:47,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:47,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:47,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993327860] [2022-07-22 21:42:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:47,330 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-07-22 21:42:47,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 21:42:47,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:47,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-07-22 21:42:47,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:47,435 INFO L129 PetriNetUnfolder]: 45/557 cut-off events. [2022-07-22 21:42:47,435 INFO L130 PetriNetUnfolder]: For 17/30 co-relation queries the response was YES. [2022-07-22 21:42:47,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 557 events. 45/557 cut-off events. For 17/30 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1958 event pairs, 4 based on Foata normal form. 1/515 useless extension candidates. Maximal degree in co-relation 628. Up to 26 conditions per place. [2022-07-22 21:42:47,440 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 14 selfloop transitions, 2 changer transitions 0/304 dead transitions. [2022-07-22 21:42:47,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 304 transitions, 663 flow [2022-07-22 21:42:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-07-22 21:42:47,444 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9447791164658634 [2022-07-22 21:42:47,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-07-22 21:42:47,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-07-22 21:42:47,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:47,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-07-22 21:42:47,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 21:42:47,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 21:42:47,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states 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 21:42:47,452 INFO L186 Difference]: Start difference. First operand has 286 places, 298 transitions, 614 flow. Second operand 3 states and 941 transitions. [2022-07-22 21:42:47,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 304 transitions, 663 flow [2022-07-22 21:42:47,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 304 transitions, 659 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:47,458 INFO L242 Difference]: Finished difference. Result has 287 places, 298 transitions, 618 flow [2022-07-22 21:42:47,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=287, PETRI_TRANSITIONS=298} [2022-07-22 21:42:47,461 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -7 predicate places. [2022-07-22 21:42:47,461 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 298 transitions, 618 flow [2022-07-22 21:42:47,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 21:42:47,462 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:47,462 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:47,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:42:47,463 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 21:42:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash -172403159, now seen corresponding path program 1 times [2022-07-22 21:42:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:47,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387040758] [2022-07-22 21:42:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:47,635 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 21:42:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:47,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387040758] [2022-07-22 21:42:47,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387040758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:47,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:47,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093200978] [2022-07-22 21:42:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:47,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:47,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 332 [2022-07-22 21:42:47,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 298 transitions, 618 flow. Second operand has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 21:42:47,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:47,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 332 [2022-07-22 21:42:47,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:48,466 INFO L129 PetriNetUnfolder]: 1133/4068 cut-off events. [2022-07-22 21:42:48,467 INFO L130 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-07-22 21:42:48,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5976 conditions, 4068 events. 1133/4068 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 35229 event pairs, 481 based on Foata normal form. 8/3531 useless extension candidates. Maximal degree in co-relation 5969. Up to 1148 conditions per place. [2022-07-22 21:42:48,510 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 86 selfloop transitions, 2 changer transitions 8/333 dead transitions. [2022-07-22 21:42:48,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 333 transitions, 889 flow [2022-07-22 21:42:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2022-07-22 21:42:48,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.794750430292599 [2022-07-22 21:42:48,516 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2022-07-22 21:42:48,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2022-07-22 21:42:48,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:48,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2022-07-22 21:42:48,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states 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 21:42:48,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:42:48,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:42:48,528 INFO L186 Difference]: Start difference. First operand has 287 places, 298 transitions, 618 flow. Second operand 7 states and 1847 transitions. [2022-07-22 21:42:48,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 333 transitions, 889 flow [2022-07-22 21:42:48,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 333 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:48,536 INFO L242 Difference]: Finished difference. Result has 296 places, 299 transitions, 633 flow [2022-07-22 21:42:48,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=296, PETRI_TRANSITIONS=299} [2022-07-22 21:42:48,539 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 2 predicate places. [2022-07-22 21:42:48,539 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 299 transitions, 633 flow [2022-07-22 21:42:48,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 21:42:48,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:48,541 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:48,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:42:48,542 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 21:42:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash 662437569, now seen corresponding path program 2 times [2022-07-22 21:42:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:48,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368657474] [2022-07-22 21:42:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:48,849 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 21:42:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368657474] [2022-07-22 21:42:48,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368657474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:48,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:42:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025041711] [2022-07-22 21:42:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:42:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:42:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:42:48,856 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-07-22 21:42:48,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 299 transitions, 633 flow. Second operand has 14 states, 14 states have (on average 235.5) internal successors, (3297), 14 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states 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 21:42:48,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:48,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-07-22 21:42:48,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:50,538 INFO L129 PetriNetUnfolder]: 1374/7294 cut-off events. [2022-07-22 21:42:50,538 INFO L130 PetriNetUnfolder]: For 1469/1575 co-relation queries the response was YES. [2022-07-22 21:42:50,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 7294 events. 1374/7294 cut-off events. For 1469/1575 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 78527 event pairs, 495 based on Foata normal form. 24/6463 useless extension candidates. Maximal degree in co-relation 10739. Up to 701 conditions per place. [2022-07-22 21:42:50,603 INFO L132 encePairwiseOnDemand]: 309/332 looper letters, 141 selfloop transitions, 25 changer transitions 4/388 dead transitions. [2022-07-22 21:42:50,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 388 transitions, 1207 flow [2022-07-22 21:42:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:42:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:42:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4787 transitions. [2022-07-22 21:42:50,615 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.720933734939759 [2022-07-22 21:42:50,615 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4787 transitions. [2022-07-22 21:42:50,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4787 transitions. [2022-07-22 21:42:50,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:50,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4787 transitions. [2022-07-22 21:42:50,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.35) internal successors, (4787), 20 states have internal predecessors, (4787), 0 states have call successors, (0), 0 states 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 21:42:50,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states 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 21:42:50,643 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states 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 21:42:50,643 INFO L186 Difference]: Start difference. First operand has 296 places, 299 transitions, 633 flow. Second operand 20 states and 4787 transitions. [2022-07-22 21:42:50,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 388 transitions, 1207 flow [2022-07-22 21:42:50,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 388 transitions, 1187 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:50,669 INFO L242 Difference]: Finished difference. Result has 320 places, 313 transitions, 766 flow [2022-07-22 21:42:50,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=766, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2022-07-22 21:42:50,672 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 26 predicate places. [2022-07-22 21:42:50,672 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 766 flow [2022-07-22 21:42:50,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.5) internal successors, (3297), 14 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states 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 21:42:50,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:50,674 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:50,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:42:50,674 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 21:42:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash 154251013, now seen corresponding path program 1 times [2022-07-22 21:42:50,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:50,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619841662] [2022-07-22 21:42:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:50,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:50,736 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 21:42:50,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:50,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619841662] [2022-07-22 21:42:50,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619841662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:50,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:50,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:42:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097652501] [2022-07-22 21:42:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:50,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:42:50,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:42:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:42:50,742 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:42:50,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 766 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:42:50,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:50,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:42:50,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:51,918 INFO L129 PetriNetUnfolder]: 1169/7999 cut-off events. [2022-07-22 21:42:51,918 INFO L130 PetriNetUnfolder]: For 669/723 co-relation queries the response was YES. [2022-07-22 21:42:51,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 7999 events. 1169/7999 cut-off events. For 669/723 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 92341 event pairs, 320 based on Foata normal form. 16/6960 useless extension candidates. Maximal degree in co-relation 10737. Up to 607 conditions per place. [2022-07-22 21:42:51,986 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 52 selfloop transitions, 9 changer transitions 0/350 dead transitions. [2022-07-22 21:42:51,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 350 transitions, 973 flow [2022-07-22 21:42:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1533 transitions. [2022-07-22 21:42:51,991 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9234939759036145 [2022-07-22 21:42:51,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1533 transitions. [2022-07-22 21:42:51,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1533 transitions. [2022-07-22 21:42:51,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:51,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1533 transitions. [2022-07-22 21:42:51,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.6) internal successors, (1533), 5 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 21:42:51,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:42:51,999 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:42:51,999 INFO L186 Difference]: Start difference. First operand has 320 places, 313 transitions, 766 flow. Second operand 5 states and 1533 transitions. [2022-07-22 21:42:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 350 transitions, 973 flow [2022-07-22 21:42:52,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 350 transitions, 961 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:52,015 INFO L242 Difference]: Finished difference. Result has 320 places, 322 transitions, 821 flow [2022-07-22 21:42:52,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=821, PETRI_PLACES=320, PETRI_TRANSITIONS=322} [2022-07-22 21:42:52,016 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 26 predicate places. [2022-07-22 21:42:52,016 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 322 transitions, 821 flow [2022-07-22 21:42:52,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:42:52,017 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:52,017 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:52,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:42:52,017 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 21:42:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:52,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1371883607, now seen corresponding path program 2 times [2022-07-22 21:42:52,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:52,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141793256] [2022-07-22 21:42:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:52,071 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 21:42:52,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:52,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141793256] [2022-07-22 21:42:52,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141793256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:52,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:52,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:42:52,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970936332] [2022-07-22 21:42:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:52,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:42:52,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:42:52,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:42:52,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:42:52,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 322 transitions, 821 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:42:52,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:52,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:42:52,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:53,537 INFO L129 PetriNetUnfolder]: 1207/10397 cut-off events. [2022-07-22 21:42:53,538 INFO L130 PetriNetUnfolder]: For 1711/1784 co-relation queries the response was YES. [2022-07-22 21:42:53,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14020 conditions, 10397 events. 1207/10397 cut-off events. For 1711/1784 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 128901 event pairs, 428 based on Foata normal form. 30/9712 useless extension candidates. Maximal degree in co-relation 13998. Up to 935 conditions per place. [2022-07-22 21:42:53,605 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 46 selfloop transitions, 4 changer transitions 0/339 dead transitions. [2022-07-22 21:42:53,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 339 transitions, 977 flow [2022-07-22 21:42:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:42:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:42:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1218 transitions. [2022-07-22 21:42:53,609 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9171686746987951 [2022-07-22 21:42:53,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1218 transitions. [2022-07-22 21:42:53,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1218 transitions. [2022-07-22 21:42:53,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:53,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1218 transitions. [2022-07-22 21:42:53,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:53,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 21:42:53,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 21:42:53,623 INFO L186 Difference]: Start difference. First operand has 320 places, 322 transitions, 821 flow. Second operand 4 states and 1218 transitions. [2022-07-22 21:42:53,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 339 transitions, 977 flow [2022-07-22 21:42:53,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 339 transitions, 977 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:42:53,638 INFO L242 Difference]: Finished difference. Result has 325 places, 324 transitions, 853 flow [2022-07-22 21:42:53,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=853, PETRI_PLACES=325, PETRI_TRANSITIONS=324} [2022-07-22 21:42:53,640 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 31 predicate places. [2022-07-22 21:42:53,640 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 324 transitions, 853 flow [2022-07-22 21:42:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:42:53,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:53,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:53,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:42:53,642 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 21:42:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash 674576607, now seen corresponding path program 1 times [2022-07-22 21:42:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:53,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688068115] [2022-07-22 21:42:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:53,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:53,717 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 21:42:53,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:53,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688068115] [2022-07-22 21:42:53,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688068115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:53,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:53,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:53,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652089698] [2022-07-22 21:42:53,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:53,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:53,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:42:53,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 324 transitions, 853 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states 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 21:42:53,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:53,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:42:53,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:55,247 INFO L129 PetriNetUnfolder]: 1360/11666 cut-off events. [2022-07-22 21:42:55,247 INFO L130 PetriNetUnfolder]: For 4082/4186 co-relation queries the response was YES. [2022-07-22 21:42:55,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16522 conditions, 11666 events. 1360/11666 cut-off events. For 4082/4186 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 152189 event pairs, 722 based on Foata normal form. 30/10864 useless extension candidates. Maximal degree in co-relation 16497. Up to 894 conditions per place. [2022-07-22 21:42:55,340 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 68 selfloop transitions, 7 changer transitions 0/364 dead transitions. [2022-07-22 21:42:55,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 364 transitions, 1176 flow [2022-07-22 21:42:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2022-07-22 21:42:55,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9204819277108434 [2022-07-22 21:42:55,345 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2022-07-22 21:42:55,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2022-07-22 21:42:55,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:55,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2022-07-22 21:42:55,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states 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 21:42:55,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:42:55,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:42:55,353 INFO L186 Difference]: Start difference. First operand has 325 places, 324 transitions, 853 flow. Second operand 5 states and 1528 transitions. [2022-07-22 21:42:55,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 364 transitions, 1176 flow [2022-07-22 21:42:55,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 364 transitions, 1169 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:55,382 INFO L242 Difference]: Finished difference. Result has 330 places, 328 transitions, 908 flow [2022-07-22 21:42:55,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=908, PETRI_PLACES=330, PETRI_TRANSITIONS=328} [2022-07-22 21:42:55,384 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 36 predicate places. [2022-07-22 21:42:55,384 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 328 transitions, 908 flow [2022-07-22 21:42:55,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states 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 21:42:55,385 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:55,385 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:55,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:42:55,385 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 21:42:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1582113963, now seen corresponding path program 2 times [2022-07-22 21:42:55,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:55,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105866682] [2022-07-22 21:42:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:55,454 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 21:42:55,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105866682] [2022-07-22 21:42:55,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105866682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:55,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:55,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:55,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422127226] [2022-07-22 21:42:55,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:55,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:55,462 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:42:55,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 328 transitions, 908 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states 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 21:42:55,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:55,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:42:55,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:57,155 INFO L129 PetriNetUnfolder]: 1337/12893 cut-off events. [2022-07-22 21:42:57,156 INFO L130 PetriNetUnfolder]: For 5218/5447 co-relation queries the response was YES. [2022-07-22 21:42:57,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18823 conditions, 12893 events. 1337/12893 cut-off events. For 5218/5447 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 175124 event pairs, 650 based on Foata normal form. 35/12057 useless extension candidates. Maximal degree in co-relation 18796. Up to 761 conditions per place. [2022-07-22 21:42:57,230 INFO L132 encePairwiseOnDemand]: 322/332 looper letters, 84 selfloop transitions, 19 changer transitions 0/392 dead transitions. [2022-07-22 21:42:57,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 392 transitions, 1422 flow [2022-07-22 21:42:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2144 transitions. [2022-07-22 21:42:57,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9225473321858864 [2022-07-22 21:42:57,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2144 transitions. [2022-07-22 21:42:57,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2144 transitions. [2022-07-22 21:42:57,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:57,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2144 transitions. [2022-07-22 21:42:57,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 306.2857142857143) internal successors, (2144), 7 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states 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 21:42:57,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:42:57,244 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:42:57,244 INFO L186 Difference]: Start difference. First operand has 330 places, 328 transitions, 908 flow. Second operand 7 states and 2144 transitions. [2022-07-22 21:42:57,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 392 transitions, 1422 flow [2022-07-22 21:42:57,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 392 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:57,272 INFO L242 Difference]: Finished difference. Result has 338 places, 344 transitions, 1095 flow [2022-07-22 21:42:57,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1095, PETRI_PLACES=338, PETRI_TRANSITIONS=344} [2022-07-22 21:42:57,274 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 44 predicate places. [2022-07-22 21:42:57,274 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 344 transitions, 1095 flow [2022-07-22 21:42:57,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states 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 21:42:57,275 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:57,275 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:57,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:42:57,275 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 21:42:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1986999437, now seen corresponding path program 1 times [2022-07-22 21:42:57,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:57,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211063155] [2022-07-22 21:42:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:57,371 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 21:42:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:57,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211063155] [2022-07-22 21:42:57,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211063155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:57,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:57,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:42:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827165844] [2022-07-22 21:42:57,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:57,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:42:57,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:42:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:42:57,375 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 332 [2022-07-22 21:42:57,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 344 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states 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 21:42:57,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:57,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 332 [2022-07-22 21:42:57,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:58,367 INFO L129 PetriNetUnfolder]: 247/6202 cut-off events. [2022-07-22 21:42:58,367 INFO L130 PetriNetUnfolder]: For 2650/3539 co-relation queries the response was YES. [2022-07-22 21:42:58,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 6202 events. 247/6202 cut-off events. For 2650/3539 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 77752 event pairs, 41 based on Foata normal form. 224/5974 useless extension candidates. Maximal degree in co-relation 9718. Up to 1296 conditions per place. [2022-07-22 21:42:58,399 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 55 selfloop transitions, 4 changer transitions 9/359 dead transitions. [2022-07-22 21:42:58,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 359 transitions, 1268 flow [2022-07-22 21:42:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:58,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1946 transitions. [2022-07-22 21:42:58,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8373493975903614 [2022-07-22 21:42:58,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1946 transitions. [2022-07-22 21:42:58,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1946 transitions. [2022-07-22 21:42:58,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:58,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1946 transitions. [2022-07-22 21:42:58,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 21:42:58,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:42:58,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:42:58,413 INFO L186 Difference]: Start difference. First operand has 338 places, 344 transitions, 1095 flow. Second operand 7 states and 1946 transitions. [2022-07-22 21:42:58,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 359 transitions, 1268 flow [2022-07-22 21:42:58,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 359 transitions, 1264 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-22 21:42:58,428 INFO L242 Difference]: Finished difference. Result has 349 places, 342 transitions, 1084 flow [2022-07-22 21:42:58,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=349, PETRI_TRANSITIONS=342} [2022-07-22 21:42:58,429 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 55 predicate places. [2022-07-22 21:42:58,429 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 342 transitions, 1084 flow [2022-07-22 21:42:58,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states 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 21:42:58,430 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:58,430 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:58,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:42:58,430 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 21:42:58,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash 116317659, now seen corresponding path program 3 times [2022-07-22 21:42:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:58,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406053755] [2022-07-22 21:42:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:58,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:58,474 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 21:42:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406053755] [2022-07-22 21:42:58,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406053755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:58,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:58,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:42:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717216499] [2022-07-22 21:42:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:58,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:42:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:42:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:42:58,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:42:58,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 342 transitions, 1084 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:42:58,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:58,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:42:58,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:00,072 INFO L129 PetriNetUnfolder]: 1309/12730 cut-off events. [2022-07-22 21:43:00,073 INFO L130 PetriNetUnfolder]: For 9253/9450 co-relation queries the response was YES. [2022-07-22 21:43:00,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20163 conditions, 12730 events. 1309/12730 cut-off events. For 9253/9450 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 173461 event pairs, 625 based on Foata normal form. 41/11883 useless extension candidates. Maximal degree in co-relation 20126. Up to 1424 conditions per place. [2022-07-22 21:43:00,166 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 69 selfloop transitions, 15 changer transitions 2/378 dead transitions. [2022-07-22 21:43:00,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 378 transitions, 1442 flow [2022-07-22 21:43:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:43:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:43:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-07-22 21:43:00,171 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-07-22 21:43:00,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-07-22 21:43:00,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-07-22 21:43:00,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:00,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-07-22 21:43:00,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states 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 21:43:00,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:00,178 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:00,178 INFO L186 Difference]: Start difference. First operand has 349 places, 342 transitions, 1084 flow. Second operand 5 states and 1534 transitions. [2022-07-22 21:43:00,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 378 transitions, 1442 flow [2022-07-22 21:43:00,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 378 transitions, 1435 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-22 21:43:00,242 INFO L242 Difference]: Finished difference. Result has 352 places, 349 transitions, 1213 flow [2022-07-22 21:43:00,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1213, PETRI_PLACES=352, PETRI_TRANSITIONS=349} [2022-07-22 21:43:00,243 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 58 predicate places. [2022-07-22 21:43:00,243 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 349 transitions, 1213 flow [2022-07-22 21:43:00,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:00,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:00,244 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:00,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:43:00,244 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 21:43:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:00,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1840381927, now seen corresponding path program 4 times [2022-07-22 21:43:00,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:00,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836451173] [2022-07-22 21:43:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:00,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:00,302 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 21:43:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:00,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836451173] [2022-07-22 21:43:00,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836451173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:00,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:00,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:43:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422825297] [2022-07-22 21:43:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:00,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:43:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:43:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:43:00,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:43:00,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 349 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:00,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:00,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:43:00,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:01,991 INFO L129 PetriNetUnfolder]: 1303/12374 cut-off events. [2022-07-22 21:43:01,991 INFO L130 PetriNetUnfolder]: For 12352/12589 co-relation queries the response was YES. [2022-07-22 21:43:02,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20233 conditions, 12374 events. 1303/12374 cut-off events. For 12352/12589 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 166694 event pairs, 681 based on Foata normal form. 17/11480 useless extension candidates. Maximal degree in co-relation 20195. Up to 1765 conditions per place. [2022-07-22 21:43:02,112 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 65 selfloop transitions, 8 changer transitions 0/365 dead transitions. [2022-07-22 21:43:02,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 365 transitions, 1438 flow [2022-07-22 21:43:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:43:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:43:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1220 transitions. [2022-07-22 21:43:02,115 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9186746987951807 [2022-07-22 21:43:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1220 transitions. [2022-07-22 21:43:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1220 transitions. [2022-07-22 21:43:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1220 transitions. [2022-07-22 21:43:02,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:02,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 21:43:02,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 21:43:02,121 INFO L186 Difference]: Start difference. First operand has 352 places, 349 transitions, 1213 flow. Second operand 4 states and 1220 transitions. [2022-07-22 21:43:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 365 transitions, 1438 flow [2022-07-22 21:43:02,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 365 transitions, 1432 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-22 21:43:02,203 INFO L242 Difference]: Finished difference. Result has 357 places, 351 transitions, 1269 flow [2022-07-22 21:43:02,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1269, PETRI_PLACES=357, PETRI_TRANSITIONS=351} [2022-07-22 21:43:02,204 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 63 predicate places. [2022-07-22 21:43:02,204 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 351 transitions, 1269 flow [2022-07-22 21:43:02,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:02,205 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:02,205 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:02,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:43:02,206 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:43:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2029576223, now seen corresponding path program 1 times [2022-07-22 21:43:02,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:02,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338888222] [2022-07-22 21:43:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:02,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:02,310 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 21:43:02,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:02,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338888222] [2022-07-22 21:43:02,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338888222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:02,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:02,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:43:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211442188] [2022-07-22 21:43:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:02,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:43:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:43:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:43:02,315 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-07-22 21:43:02,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 351 transitions, 1269 flow. Second operand has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states 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 21:43:02,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:02,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-07-22 21:43:02,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:05,846 INFO L129 PetriNetUnfolder]: 5882/23611 cut-off events. [2022-07-22 21:43:05,846 INFO L130 PetriNetUnfolder]: For 19071/20069 co-relation queries the response was YES. [2022-07-22 21:43:05,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44401 conditions, 23611 events. 5882/23611 cut-off events. For 19071/20069 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 327754 event pairs, 3180 based on Foata normal form. 253/22300 useless extension candidates. Maximal degree in co-relation 44360. Up to 8090 conditions per place. [2022-07-22 21:43:06,039 INFO L132 encePairwiseOnDemand]: 318/332 looper letters, 72 selfloop transitions, 30 changer transitions 6/400 dead transitions. [2022-07-22 21:43:06,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 400 transitions, 1738 flow [2022-07-22 21:43:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:43:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:43:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-07-22 21:43:06,043 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8240103270223752 [2022-07-22 21:43:06,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-07-22 21:43:06,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-07-22 21:43:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:06,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-07-22 21:43:06,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states 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 21:43:06,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:43:06,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:43:06,052 INFO L186 Difference]: Start difference. First operand has 357 places, 351 transitions, 1269 flow. Second operand 7 states and 1915 transitions. [2022-07-22 21:43:06,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 400 transitions, 1738 flow [2022-07-22 21:43:06,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 400 transitions, 1728 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-22 21:43:06,125 INFO L242 Difference]: Finished difference. Result has 367 places, 378 transitions, 1571 flow [2022-07-22 21:43:06,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1571, PETRI_PLACES=367, PETRI_TRANSITIONS=378} [2022-07-22 21:43:06,126 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 73 predicate places. [2022-07-22 21:43:06,126 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 378 transitions, 1571 flow [2022-07-22 21:43:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states 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 21:43:06,127 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:06,127 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:06,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:43:06,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:43:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1458383197, now seen corresponding path program 1 times [2022-07-22 21:43:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616010271] [2022-07-22 21:43:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:06,213 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 21:43:06,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:06,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616010271] [2022-07-22 21:43:06,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616010271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:06,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:06,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:43:06,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914966012] [2022-07-22 21:43:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:06,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:43:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:43:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:43:06,217 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-07-22 21:43:06,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 378 transitions, 1571 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 21:43:06,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:06,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-07-22 21:43:06,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:10,073 INFO L129 PetriNetUnfolder]: 5880/23513 cut-off events. [2022-07-22 21:43:10,073 INFO L130 PetriNetUnfolder]: For 37370/41765 co-relation queries the response was YES. [2022-07-22 21:43:10,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55970 conditions, 23513 events. 5880/23513 cut-off events. For 37370/41765 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 326177 event pairs, 3039 based on Foata normal form. 674/22660 useless extension candidates. Maximal degree in co-relation 55924. Up to 6779 conditions per place. [2022-07-22 21:43:10,236 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 109 selfloop transitions, 6 changer transitions 17/424 dead transitions. [2022-07-22 21:43:10,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 424 transitions, 2230 flow [2022-07-22 21:43:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:43:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:43:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-07-22 21:43:10,240 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2022-07-22 21:43:10,240 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-07-22 21:43:10,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-07-22 21:43:10,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:10,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-07-22 21:43:10,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states 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 21:43:10,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 21:43:10,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states 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 21:43:10,250 INFO L186 Difference]: Start difference. First operand has 367 places, 378 transitions, 1571 flow. Second operand 8 states and 2176 transitions. [2022-07-22 21:43:10,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 424 transitions, 2230 flow [2022-07-22 21:43:10,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 424 transitions, 2208 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:10,540 INFO L242 Difference]: Finished difference. Result has 373 places, 378 transitions, 1571 flow [2022-07-22 21:43:10,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1571, PETRI_PLACES=373, PETRI_TRANSITIONS=378} [2022-07-22 21:43:10,541 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 79 predicate places. [2022-07-22 21:43:10,541 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 378 transitions, 1571 flow [2022-07-22 21:43:10,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 21:43:10,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:10,542 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:10,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:43:10,542 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:43:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1799972975, now seen corresponding path program 1 times [2022-07-22 21:43:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:10,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020074863] [2022-07-22 21:43:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:10,608 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 21:43:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:10,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020074863] [2022-07-22 21:43:10,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020074863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:10,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:10,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:43:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228049230] [2022-07-22 21:43:10,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:10,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:43:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:43:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:43:10,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 332 [2022-07-22 21:43:10,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 378 transitions, 1571 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states 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 21:43:10,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:10,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 332 [2022-07-22 21:43:10,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:12,997 INFO L129 PetriNetUnfolder]: 2421/14869 cut-off events. [2022-07-22 21:43:12,998 INFO L130 PetriNetUnfolder]: For 18064/20869 co-relation queries the response was YES. [2022-07-22 21:43:13,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31345 conditions, 14869 events. 2421/14869 cut-off events. For 18064/20869 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 210130 event pairs, 860 based on Foata normal form. 320/14213 useless extension candidates. Maximal degree in co-relation 31297. Up to 3086 conditions per place. [2022-07-22 21:43:13,104 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 57 selfloop transitions, 5 changer transitions 12/393 dead transitions. [2022-07-22 21:43:13,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 393 transitions, 1762 flow [2022-07-22 21:43:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:43:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:43:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1945 transitions. [2022-07-22 21:43:13,108 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8369191049913941 [2022-07-22 21:43:13,108 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1945 transitions. [2022-07-22 21:43:13,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1945 transitions. [2022-07-22 21:43:13,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:13,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1945 transitions. [2022-07-22 21:43:13,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.85714285714283) internal successors, (1945), 7 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states 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 21:43:13,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:43:13,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 21:43:13,116 INFO L186 Difference]: Start difference. First operand has 373 places, 378 transitions, 1571 flow. Second operand 7 states and 1945 transitions. [2022-07-22 21:43:13,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 393 transitions, 1762 flow [2022-07-22 21:43:13,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 393 transitions, 1751 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-22 21:43:13,218 INFO L242 Difference]: Finished difference. Result has 378 places, 374 transitions, 1519 flow [2022-07-22 21:43:13,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=378, PETRI_TRANSITIONS=374} [2022-07-22 21:43:13,219 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 84 predicate places. [2022-07-22 21:43:13,219 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 374 transitions, 1519 flow [2022-07-22 21:43:13,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states 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 21:43:13,220 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:13,220 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:13,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:43:13,220 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:43:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1137660929, now seen corresponding path program 5 times [2022-07-22 21:43:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032082278] [2022-07-22 21:43:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:13,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:13,262 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 21:43:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:13,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032082278] [2022-07-22 21:43:13,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032082278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:13,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:13,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:43:13,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983212071] [2022-07-22 21:43:13,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:13,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:43:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:43:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:43:13,265 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:43:13,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 374 transitions, 1519 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:13,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:13,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:43:13,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:16,151 INFO L129 PetriNetUnfolder]: 2686/19729 cut-off events. [2022-07-22 21:43:16,151 INFO L130 PetriNetUnfolder]: For 24754/26327 co-relation queries the response was YES. [2022-07-22 21:43:16,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39721 conditions, 19729 events. 2686/19729 cut-off events. For 24754/26327 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 293003 event pairs, 963 based on Foata normal form. 218/18488 useless extension candidates. Maximal degree in co-relation 39670. Up to 1799 conditions per place. [2022-07-22 21:43:16,303 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 64 selfloop transitions, 21 changer transitions 17/421 dead transitions. [2022-07-22 21:43:16,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 421 transitions, 2082 flow [2022-07-22 21:43:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:43:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:43:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2022-07-22 21:43:16,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9246987951807228 [2022-07-22 21:43:16,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2022-07-22 21:43:16,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2022-07-22 21:43:16,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:16,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2022-07-22 21:43:16,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states 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 21:43:16,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:16,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:16,313 INFO L186 Difference]: Start difference. First operand has 378 places, 374 transitions, 1519 flow. Second operand 5 states and 1535 transitions. [2022-07-22 21:43:16,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 421 transitions, 2082 flow [2022-07-22 21:43:16,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 421 transitions, 2071 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-22 21:43:16,690 INFO L242 Difference]: Finished difference. Result has 380 places, 379 transitions, 1691 flow [2022-07-22 21:43:16,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1691, PETRI_PLACES=380, PETRI_TRANSITIONS=379} [2022-07-22 21:43:16,691 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 86 predicate places. [2022-07-22 21:43:16,691 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 379 transitions, 1691 flow [2022-07-22 21:43:16,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:16,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:16,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:16,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:43:16,693 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 21:43:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 604689565, now seen corresponding path program 6 times [2022-07-22 21:43:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:16,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055889219] [2022-07-22 21:43:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:16,739 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 21:43:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:16,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055889219] [2022-07-22 21:43:16,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055889219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:16,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:16,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:43:16,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736451668] [2022-07-22 21:43:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:16,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:43:16,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:43:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:43:16,743 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:43:16,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 379 transitions, 1691 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:16,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:16,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:43:16,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:19,403 INFO L129 PetriNetUnfolder]: 2499/17853 cut-off events. [2022-07-22 21:43:19,404 INFO L130 PetriNetUnfolder]: For 33042/35138 co-relation queries the response was YES. [2022-07-22 21:43:19,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37976 conditions, 17853 events. 2499/17853 cut-off events. For 33042/35138 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 256521 event pairs, 648 based on Foata normal form. 267/16800 useless extension candidates. Maximal degree in co-relation 37925. Up to 1934 conditions per place. [2022-07-22 21:43:19,537 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 22 changer transitions 34/421 dead transitions. [2022-07-22 21:43:19,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 421 transitions, 2253 flow [2022-07-22 21:43:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:43:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:43:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-07-22 21:43:19,539 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-07-22 21:43:19,539 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-07-22 21:43:19,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-07-22 21:43:19,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:19,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-07-22 21:43:19,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states 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 21:43:19,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:19,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:19,544 INFO L186 Difference]: Start difference. First operand has 380 places, 379 transitions, 1691 flow. Second operand 5 states and 1534 transitions. [2022-07-22 21:43:19,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 421 transitions, 2253 flow [2022-07-22 21:43:19,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 421 transitions, 2188 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-07-22 21:43:19,739 INFO L242 Difference]: Finished difference. Result has 386 places, 371 transitions, 1678 flow [2022-07-22 21:43:19,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1678, PETRI_PLACES=386, PETRI_TRANSITIONS=371} [2022-07-22 21:43:19,740 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 92 predicate places. [2022-07-22 21:43:19,740 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 371 transitions, 1678 flow [2022-07-22 21:43:19,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:19,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:19,740 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:19,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:43:19,740 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 21:43:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash -521518423, now seen corresponding path program 1 times [2022-07-22 21:43:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:19,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549807127] [2022-07-22 21:43:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:43:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:19,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549807127] [2022-07-22 21:43:19,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549807127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:19,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:19,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:43:19,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859697822] [2022-07-22 21:43:19,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:19,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:43:19,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:19,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:43:19,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:43:19,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:43:19,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 371 transitions, 1678 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 21:43:19,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:19,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:43:19,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:22,226 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([929] thread2EXIT-->L124-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork2_thidvar0_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][371], [Black: 496#(= |thread3Thread1of1ForFork0_#t~ite21| 1), 79#L124-2true, 473#true, Black: 516#(= (+ (- 1) ~res3~0) 0), Black: 365#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0)), Black: 381#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 361#(<= ~res1~0 0), Black: 391#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 389#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 385#(and (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 373#(and (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~res1~0 0)), Black: 383#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 367#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= ~res1~0 0)), Black: 379#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~res1~0 0)), Black: 537#(and (<= (+ ~res2~0 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0)), Black: 533#(<= (+ ~res2~0 1) 0), Black: 414#(<= (+ ~count3~0 1) ~count1~0), Black: 532#(<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0), Black: 416#(and (<= ~count3~0 ~count2~0) (<= (+ ~count3~0 1) ~count1~0)), Black: 551#(<= ~count3~0 ~count2~0), Black: 426#(and (<= ~count1~0 ~count3~0) (<= (+ ~count2~0 1) ~count3~0)), Black: 552#(<= ~count1~0 ~count2~0), Black: 549#true, Black: 433#(<= (+ ~count1~0 1) ~count2~0), Black: 560#true, Black: 436#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count1~0 1) ~count3~0)), Black: 562#(<= ~count1~0 ~count3~0), Black: 563#(<= ~count1~0 ~count2~0), Black: 316#(= thread2Thread1of1ForFork2_~stop~1 0), 89#L89true, 441#true, Black: 449#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count3~0 1) ~count2~0)), Black: 445#(<= (+ ~count3~0 1) ~count2~0), Black: 444#(<= (+ ~count1~0 1) ~count2~0), Black: 447#(and (not (= ~count2~0 ~count1~0)) (<= (+ ~count3~0 1) ~count2~0)), Black: 326#(= thread1Thread1of1ForFork1_~stop~0 0), 494#true, 574#(<= ~count2~0 ~count1~0), Black: 458#(<= (+ ~res1~0 1) 0), Black: 462#(and (<= (+ ~res1~0 1) 0) (<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0)), Black: 457#(<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0), Black: 337#(and (<= (+ ~res2~0 ~n1~0) (+ ~res3~0 ~n2~0)) (<= ~n1~0 (+ ~res3~0 ~n3~0))), 423#(<= ~count1~0 ~count3~0), Black: 331#(<= ~n1~0 (+ ~res3~0 ~n3~0)), Black: 475#(<= (+ ~count2~0 1) ~count1~0), Black: 478#(and (<= (+ ~count2~0 1) ~count1~0) (<= (+ ~count3~0 1) ~count1~0)), Black: 476#(<= (+ ~count3~0 1) ~count1~0), 565#(and (<= ~count1~0 ~count3~0) (<= ~count1~0 ~count2~0)), 554#(and (<= ~count3~0 ~count2~0) (<= ~count1~0 ~count2~0)), Black: 487#(<= (+ ~count2~0 1) ~count1~0), 311#true, 413#(<= ~count3~0 ~count2~0), Black: 497#(or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)), Black: 501#(and (or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)) (= |thread3Thread1of1ForFork0_#t~ite21| 1))]) [2022-07-22 21:43:22,226 INFO L384 tUnfolder$Statistics]: this new event has 202 ancestors and is cut-off event [2022-07-22 21:43:22,226 INFO L387 tUnfolder$Statistics]: existing Event has 200 ancestors and is cut-off event [2022-07-22 21:43:22,226 INFO L387 tUnfolder$Statistics]: existing Event has 200 ancestors and is cut-off event [2022-07-22 21:43:22,226 INFO L387 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2022-07-22 21:43:22,236 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([929] thread2EXIT-->L124-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork2_thidvar0_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][371], [Black: 496#(= |thread3Thread1of1ForFork0_#t~ite21| 1), 79#L124-2true, 473#true, Black: 516#(= (+ (- 1) ~res3~0) 0), Black: 365#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0)), Black: 381#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 361#(<= ~res1~0 0), Black: 391#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 389#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 385#(and (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 373#(and (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~res1~0 0)), Black: 383#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 367#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= ~res1~0 0)), Black: 379#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~res1~0 0)), Black: 537#(and (<= (+ ~res2~0 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0)), Black: 533#(<= (+ ~res2~0 1) 0), Black: 414#(<= (+ ~count3~0 1) ~count1~0), Black: 532#(<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0), Black: 416#(and (<= ~count3~0 ~count2~0) (<= (+ ~count3~0 1) ~count1~0)), Black: 551#(<= ~count3~0 ~count2~0), Black: 426#(and (<= ~count1~0 ~count3~0) (<= (+ ~count2~0 1) ~count3~0)), Black: 552#(<= ~count1~0 ~count2~0), Black: 549#true, Black: 433#(<= (+ ~count1~0 1) ~count2~0), Black: 436#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count1~0 1) ~count3~0)), Black: 560#true, Black: 562#(<= ~count1~0 ~count3~0), Black: 563#(<= ~count1~0 ~count2~0), Black: 316#(= thread2Thread1of1ForFork2_~stop~1 0), 441#true, Black: 449#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count3~0 1) ~count2~0)), Black: 445#(<= (+ ~count3~0 1) ~count2~0), Black: 444#(<= (+ ~count1~0 1) ~count2~0), Black: 447#(and (not (= ~count2~0 ~count1~0)) (<= (+ ~count3~0 1) ~count2~0)), Black: 326#(= thread1Thread1of1ForFork1_~stop~0 0), 494#true, 87#L100-3true, 574#(<= ~count2~0 ~count1~0), Black: 458#(<= (+ ~res1~0 1) 0), Black: 462#(and (<= (+ ~res1~0 1) 0) (<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0)), Black: 457#(<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0), Black: 337#(and (<= (+ ~res2~0 ~n1~0) (+ ~res3~0 ~n2~0)) (<= ~n1~0 (+ ~res3~0 ~n3~0))), 423#(<= ~count1~0 ~count3~0), Black: 331#(<= ~n1~0 (+ ~res3~0 ~n3~0)), Black: 475#(<= (+ ~count2~0 1) ~count1~0), Black: 478#(and (<= (+ ~count2~0 1) ~count1~0) (<= (+ ~count3~0 1) ~count1~0)), 565#(and (<= ~count1~0 ~count3~0) (<= ~count1~0 ~count2~0)), Black: 476#(<= (+ ~count3~0 1) ~count1~0), Black: 487#(<= (+ ~count2~0 1) ~count1~0), 554#(and (<= ~count3~0 ~count2~0) (<= ~count1~0 ~count2~0)), 311#true, 413#(<= ~count3~0 ~count2~0), Black: 497#(or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)), Black: 501#(and (or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)) (= |thread3Thread1of1ForFork0_#t~ite21| 1))]) [2022-07-22 21:43:22,237 INFO L384 tUnfolder$Statistics]: this new event has 201 ancestors and is cut-off event [2022-07-22 21:43:22,237 INFO L387 tUnfolder$Statistics]: existing Event has 203 ancestors and is cut-off event [2022-07-22 21:43:22,237 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-22 21:43:22,237 INFO L387 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2022-07-22 21:43:22,313 INFO L129 PetriNetUnfolder]: 2222/16157 cut-off events. [2022-07-22 21:43:22,313 INFO L130 PetriNetUnfolder]: For 29115/30712 co-relation queries the response was YES. [2022-07-22 21:43:22,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33489 conditions, 16157 events. 2222/16157 cut-off events. For 29115/30712 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 224018 event pairs, 644 based on Foata normal form. 188/15121 useless extension candidates. Maximal degree in co-relation 33435. Up to 1732 conditions per place. [2022-07-22 21:43:22,431 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 59 selfloop transitions, 14 changer transitions 8/396 dead transitions. [2022-07-22 21:43:22,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 396 transitions, 1983 flow [2022-07-22 21:43:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:43:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:43:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1527 transitions. [2022-07-22 21:43:22,433 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9198795180722892 [2022-07-22 21:43:22,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1527 transitions. [2022-07-22 21:43:22,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1527 transitions. [2022-07-22 21:43:22,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:22,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1527 transitions. [2022-07-22 21:43:22,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.4) internal successors, (1527), 5 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states 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 21:43:22,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:22,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:22,438 INFO L186 Difference]: Start difference. First operand has 386 places, 371 transitions, 1678 flow. Second operand 5 states and 1527 transitions. [2022-07-22 21:43:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 396 transitions, 1983 flow [2022-07-22 21:43:22,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 396 transitions, 1816 flow, removed 71 selfloop flow, removed 8 redundant places. [2022-07-22 21:43:22,572 INFO L242 Difference]: Finished difference. Result has 381 places, 374 transitions, 1607 flow [2022-07-22 21:43:22,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1607, PETRI_PLACES=381, PETRI_TRANSITIONS=374} [2022-07-22 21:43:22,573 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 87 predicate places. [2022-07-22 21:43:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 374 transitions, 1607 flow [2022-07-22 21:43:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 21:43:22,573 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:22,574 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:22,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:43:22,574 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 21:43:22,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash -119223153, now seen corresponding path program 2 times [2022-07-22 21:43:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:22,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305448249] [2022-07-22 21:43:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:43:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:22,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305448249] [2022-07-22 21:43:22,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305448249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:22,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:22,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:43:22,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450643666] [2022-07-22 21:43:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:43:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:43:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:43:22,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:43:22,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 374 transitions, 1607 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 21:43:22,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:22,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:43:22,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:24,589 INFO L129 PetriNetUnfolder]: 1906/13298 cut-off events. [2022-07-22 21:43:24,590 INFO L130 PetriNetUnfolder]: For 19732/20775 co-relation queries the response was YES. [2022-07-22 21:43:24,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27668 conditions, 13298 events. 1906/13298 cut-off events. For 19732/20775 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 181396 event pairs, 620 based on Foata normal form. 153/12440 useless extension candidates. Maximal degree in co-relation 27620. Up to 1488 conditions per place. [2022-07-22 21:43:24,746 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 58 selfloop transitions, 27 changer transitions 20/412 dead transitions. [2022-07-22 21:43:24,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 412 transitions, 2114 flow [2022-07-22 21:43:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:43:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:43:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1530 transitions. [2022-07-22 21:43:24,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9216867469879518 [2022-07-22 21:43:24,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1530 transitions. [2022-07-22 21:43:24,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1530 transitions. [2022-07-22 21:43:24,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:24,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1530 transitions. [2022-07-22 21:43:24,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states 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 21:43:24,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:24,752 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 21:43:24,752 INFO L186 Difference]: Start difference. First operand has 381 places, 374 transitions, 1607 flow. Second operand 5 states and 1530 transitions. [2022-07-22 21:43:24,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 412 transitions, 2114 flow [2022-07-22 21:43:24,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 412 transitions, 2090 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:24,867 INFO L242 Difference]: Finished difference. Result has 387 places, 375 transitions, 1743 flow [2022-07-22 21:43:24,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1743, PETRI_PLACES=387, PETRI_TRANSITIONS=375} [2022-07-22 21:43:24,868 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 93 predicate places. [2022-07-22 21:43:24,868 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 375 transitions, 1743 flow [2022-07-22 21:43:24,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 21:43:24,869 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:24,869 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:24,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:43:24,869 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 21:43:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash 610845763, now seen corresponding path program 1 times [2022-07-22 21:43:24,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:24,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376295558] [2022-07-22 21:43:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:43:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:25,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376295558] [2022-07-22 21:43:25,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376295558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:25,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:25,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:43:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125939593] [2022-07-22 21:43:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:25,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:43:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:43:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:43:25,076 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-07-22 21:43:25,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 375 transitions, 1743 flow. Second operand has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states 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 21:43:25,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:25,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-07-22 21:43:25,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:32,962 INFO L129 PetriNetUnfolder]: 9612/46620 cut-off events. [2022-07-22 21:43:32,962 INFO L130 PetriNetUnfolder]: For 58728/64156 co-relation queries the response was YES. [2022-07-22 21:43:33,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93197 conditions, 46620 events. 9612/46620 cut-off events. For 58728/64156 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 722965 event pairs, 2650 based on Foata normal form. 739/42245 useless extension candidates. Maximal degree in co-relation 93147. Up to 4928 conditions per place. [2022-07-22 21:43:33,646 INFO L132 encePairwiseOnDemand]: 311/332 looper letters, 158 selfloop transitions, 49 changer transitions 10/484 dead transitions. [2022-07-22 21:43:33,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 484 transitions, 2754 flow [2022-07-22 21:43:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:43:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:43:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4768 transitions. [2022-07-22 21:43:33,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7180722891566265 [2022-07-22 21:43:33,651 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4768 transitions. [2022-07-22 21:43:33,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4768 transitions. [2022-07-22 21:43:33,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:33,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4768 transitions. [2022-07-22 21:43:33,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 238.4) internal successors, (4768), 20 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states 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 21:43:33,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states 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 21:43:33,666 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states 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 21:43:33,666 INFO L186 Difference]: Start difference. First operand has 387 places, 375 transitions, 1743 flow. Second operand 20 states and 4768 transitions. [2022-07-22 21:43:33,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 484 transitions, 2754 flow [2022-07-22 21:43:34,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 484 transitions, 2680 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-07-22 21:43:34,071 INFO L242 Difference]: Finished difference. Result has 401 places, 402 transitions, 2013 flow [2022-07-22 21:43:34,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2013, PETRI_PLACES=401, PETRI_TRANSITIONS=402} [2022-07-22 21:43:34,073 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 107 predicate places. [2022-07-22 21:43:34,073 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 402 transitions, 2013 flow [2022-07-22 21:43:34,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states 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 21:43:34,074 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:34,074 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:34,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:43:34,074 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 21:43:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash -566396359, now seen corresponding path program 1 times [2022-07-22 21:43:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:34,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035941700] [2022-07-22 21:43:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:34,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:43:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035941700] [2022-07-22 21:43:34,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035941700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:34,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:34,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:43:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934819115] [2022-07-22 21:43:34,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:34,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:43:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:34,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:43:34,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:43:34,119 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-22 21:43:34,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 402 transitions, 2013 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:43:34,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:34,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-22 21:43:34,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand