./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:01:24,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:01:24,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:01:24,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:01:24,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:01:24,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:01:24,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:01:24,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:01:24,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:01:24,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:01:24,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:01:24,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:01:24,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:01:24,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:01:24,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:01:24,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:01:24,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:01:24,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:01:24,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:01:24,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:01:24,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:01:24,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:01:24,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:01:24,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:01:24,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:01:24,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:01:24,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:01:24,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:01:24,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:01:24,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:01:24,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:01:24,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:01:24,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:01:24,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:01:24,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:01:24,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:01:24,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:01:24,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:01:24,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:01:24,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:01:24,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:01:24,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:01:24,603 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:01:24,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:01:24,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:01:24,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:01:24,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:01:24,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:01:24,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:01:24,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:01:24,606 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:01:24,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:01:24,608 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:01:24,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:01:24,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:01:24,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:01:24,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:01:24,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:01:24,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:01:24,609 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:01:24,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:01:24,609 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:01:24,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:01:24,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:01:24,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:01:24,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:01:24,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:01:24,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:01:24,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:01:24,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:01:24,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:01:24,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:01:24,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:01:24,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:01:24,612 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:01:24,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:01:24,612 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:01:24,612 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:01:24,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:01:24,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:01:24,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:01:24,937 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:01:24,937 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:01:24,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-09-01 12:01:26,263 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:01:26,543 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:01:26,544 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-09-01 12:01:26,555 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87b6a345/86e1c520939345529277230c4864a82b/FLAGc3f090b7f [2023-09-01 12:01:26,574 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87b6a345/86e1c520939345529277230c4864a82b [2023-09-01 12:01:26,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:01:26,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:01:26,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:01:26,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:01:26,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:01:26,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:26,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22799b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26, skipping insertion in model container [2023-09-01 12:01:26,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:26,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:01:26,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:01:26,817 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-09-01 12:01:26,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:01:26,861 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:01:26,898 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-09-01 12:01:26,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:01:26,938 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:01:26,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26 WrapperNode [2023-09-01 12:01:26,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:01:26,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:01:26,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:01:26,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:01:26,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:26,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,011 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-09-01 12:01:27,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:01:27,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:01:27,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:01:27,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:01:27,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:01:27,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:01:27,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:01:27,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:01:27,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (1/1) ... [2023-09-01 12:01:27,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:01:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:01:27,116 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) [2023-09-01 12:01:27,132 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 [2023-09-01 12:01:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:01:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:01:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:01:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:01:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:01:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:01:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:01:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:01:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:01:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:01:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:01:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 12:01:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:01:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:01:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:01:27,167 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:01:27,281 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:01:27,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:01:27,938 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:01:27,952 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:01:27,953 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 12:01:27,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:01:27 BoogieIcfgContainer [2023-09-01 12:01:27,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:01:27,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:01:27,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:01:27,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:01:27,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:01:26" (1/3) ... [2023-09-01 12:01:27,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b885202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:01:27, skipping insertion in model container [2023-09-01 12:01:27,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:01:26" (2/3) ... [2023-09-01 12:01:27,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b885202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:01:27, skipping insertion in model container [2023-09-01 12:01:27,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:01:27" (3/3) ... [2023-09-01 12:01:27,963 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-09-01 12:01:27,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:01:27,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:01:27,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:01:27,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:01:28,062 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:01:28,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-09-01 12:01:28,294 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-09-01 12:01:28,294 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:01:28,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-09-01 12:01:28,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-09-01 12:01:28,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-09-01 12:01:28,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:01:28,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-09-01 12:01:28,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-09-01 12:01:28,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-09-01 12:01:28,426 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-09-01 12:01:28,426 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:01:28,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-09-01 12:01:28,438 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-09-01 12:01:44,959 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-09-01 12:01:44,960 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-09-01 12:01:44,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:01:44,976 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48c0c03a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:01:44,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:01:44,987 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-09-01 12:01:44,988 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:01:44,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:44,988 INFO L208 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] [2023-09-01 12:01:44,989 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)] === [2023-09-01 12:01:44,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -496890906, now seen corresponding path program 1 times [2023-09-01 12:01:45,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:45,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884515719] [2023-09-01 12:01:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:01:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884515719] [2023-09-01 12:01:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884515719] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 12:01:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933667667] [2023-09-01 12:01:45,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:45,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 12:01:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 12:01:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 12:01:45,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-09-01 12:01:45,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:45,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:45,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-09-01 12:01:45,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:45,643 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-09-01 12:01:45,643 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-09-01 12:01:45,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-09-01 12:01:45,650 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-09-01 12:01:45,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-09-01 12:01:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 12:01:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 12:01:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-09-01 12:01:45,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-09-01 12:01:45,666 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-09-01 12:01:45,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-09-01 12:01:45,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:45,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-09-01 12:01:45,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:45,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:45,684 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:45,685 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-09-01 12:01:45,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-09-01 12:01:45,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:01:45,691 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-09-01 12:01:45,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-09-01 12:01:45,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-09-01 12:01:45,695 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-09-01 12:01:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:45,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:45,696 INFO L208 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] [2023-09-01 12:01:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:01:45,697 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)] === [2023-09-01 12:01:45,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-09-01 12:01:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357610011] [2023-09-01 12:01:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:45,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:01:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357610011] [2023-09-01 12:01:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357610011] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:45,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:45,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:01:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901896285] [2023-09-01 12:01:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:01:45,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:01:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:01:45,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-09-01 12:01:45,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:45,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:45,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-09-01 12:01:45,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:46,092 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-09-01 12:01:46,094 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 12:01:46,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-09-01 12:01:46,099 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-09-01 12:01:46,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-09-01 12:01:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:01:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:01:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-09-01 12:01:46,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-09-01 12:01:46,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-09-01 12:01:46,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-09-01 12:01:46,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:46,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-09-01 12:01:46,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,116 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-09-01 12:01:46,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-09-01 12:01:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 12:01:46,119 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-09-01 12:01:46,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-09-01 12:01:46,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-09-01 12:01:46,120 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-09-01 12:01:46,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:46,121 INFO L208 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] [2023-09-01 12:01:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:01:46,122 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)] === [2023-09-01 12:01:46,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-09-01 12:01:46,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626042379] [2023-09-01 12:01:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:01:46,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:46,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626042379] [2023-09-01 12:01:46,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626042379] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:46,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:46,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 12:01:46,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751318594] [2023-09-01 12:01:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:01:46,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:01:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:01:46,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1064 [2023-09-01 12:01:46,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:46,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1064 [2023-09-01 12:01:46,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:46,680 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-09-01 12:01:46,680 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-09-01 12:01:46,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-09-01 12:01:46,686 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-09-01 12:01:46,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-09-01 12:01:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:01:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:01:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-09-01 12:01:46,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392230576441103 [2023-09-01 12:01:46,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-09-01 12:01:46,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-09-01 12:01:46,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:46,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-09-01 12:01:46,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,711 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1402 transitions. [2023-09-01 12:01:46,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-09-01 12:01:46,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:01:46,718 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-09-01 12:01:46,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-09-01 12:01:46,719 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-09-01 12:01:46,722 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-09-01 12:01:46,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:46,724 INFO L208 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] [2023-09-01 12:01:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:01:46,724 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)] === [2023-09-01 12:01:46,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-09-01 12:01:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445351963] [2023-09-01 12:01:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:01:46,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:46,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445351963] [2023-09-01 12:01:46,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445351963] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:46,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:01:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636545701] [2023-09-01 12:01:46,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:46,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:01:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:01:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:01:46,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-09-01 12:01:46,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:46,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:46,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-09-01 12:01:46,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:47,175 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-09-01 12:01:47,175 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 12:01:47,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-09-01 12:01:47,180 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-09-01 12:01:47,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-09-01 12:01:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:01:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:01:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-09-01 12:01:47,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-09-01 12:01:47,186 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-09-01 12:01:47,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-09-01 12:01:47,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:47,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-09-01 12:01:47,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 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) [2023-09-01 12:01:47,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,204 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,204 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1847 transitions. [2023-09-01 12:01:47,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-09-01 12:01:47,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 12:01:47,209 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-09-01 12:01:47,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-09-01 12:01:47,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-09-01 12:01:47,211 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-09-01 12:01:47,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:47,213 INFO L208 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] [2023-09-01 12:01:47,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:01:47,213 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)] === [2023-09-01 12:01:47,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-09-01 12:01:47,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:47,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595103092] [2023-09-01 12:01:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:47,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:01:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595103092] [2023-09-01 12:01:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595103092] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:01:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789321735] [2023-09-01 12:01:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:01:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:01:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:01:47,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-09-01 12:01:47,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:47,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-09-01 12:01:47,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:47,702 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-09-01 12:01:47,703 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-09-01 12:01:47,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-09-01 12:01:47,709 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-09-01 12:01:47,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-09-01 12:01:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:01:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:01:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1848 transitions. [2023-09-01 12:01:47,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2023-09-01 12:01:47,715 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1848 transitions. [2023-09-01 12:01:47,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1848 transitions. [2023-09-01 12:01:47,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:47,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1848 transitions. [2023-09-01 12:01:47,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,731 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1848 transitions. [2023-09-01 12:01:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-09-01 12:01:47,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 12:01:47,736 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-09-01 12:01:47,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-09-01 12:01:47,738 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 12:01:47,738 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-09-01 12:01:47,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:47,739 INFO L208 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] [2023-09-01 12:01:47,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:01:47,739 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)] === [2023-09-01 12:01:47,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-09-01 12:01:47,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:47,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235450527] [2023-09-01 12:01:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:01:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235450527] [2023-09-01 12:01:47,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235450527] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:47,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:47,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:01:47,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467864767] [2023-09-01 12:01:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:01:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:01:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:01:47,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-09-01 12:01:47,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:47,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:47,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-09-01 12:01:47,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:48,194 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-09-01 12:01:48,194 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 12:01:48,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-09-01 12:01:48,200 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-09-01 12:01:48,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-09-01 12:01:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:01:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:01:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-09-01 12:01:48,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-09-01 12:01:48,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-09-01 12:01:48,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-09-01 12:01:48,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:48,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-09-01 12:01:48,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 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) [2023-09-01 12:01:48,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:48,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:48,218 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1847 transitions. [2023-09-01 12:01:48,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-09-01 12:01:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:01:48,221 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-09-01 12:01:48,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-09-01 12:01:48,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-09-01 12:01:48,222 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-09-01 12:01:48,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:48,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:48,224 INFO L208 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] [2023-09-01 12:01:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:01:48,224 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)] === [2023-09-01 12:01:48,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-09-01 12:01:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:48,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976116274] [2023-09-01 12:01:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:01:48,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:48,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976116274] [2023-09-01 12:01:48,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976116274] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:01:48,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975562755] [2023-09-01 12:01:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:01:48,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:01:48,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:01:48,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 12:01:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:48,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 12:01:48,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:01:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 12:01:48,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:01:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975562755] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:48,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:01:48,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-09-01 12:01:48,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319149031] [2023-09-01 12:01:48,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:48,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:01:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:01:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:01:48,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-09-01 12:01:48,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:48,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:48,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-09-01 12:01:48,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:49,067 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-09-01 12:01:49,068 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-09-01 12:01:49,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-09-01 12:01:49,074 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-09-01 12:01:49,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-09-01 12:01:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:01:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:01:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-09-01 12:01:49,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-09-01 12:01:49,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-09-01 12:01:49,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-09-01 12:01:49,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:49,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-09-01 12:01:49,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 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) [2023-09-01 12:01:49,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,090 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1847 transitions. [2023-09-01 12:01:49,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-09-01 12:01:49,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 12:01:49,093 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-09-01 12:01:49,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-09-01 12:01:49,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-09-01 12:01:49,094 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-09-01 12:01:49,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:49,095 INFO L208 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] [2023-09-01 12:01:49,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 12:01:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:01:49,305 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)] === [2023-09-01 12:01:49,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-09-01 12:01:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340242669] [2023-09-01 12:01:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 12:01:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340242669] [2023-09-01 12:01:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340242669] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:49,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:01:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520930328] [2023-09-01 12:01:49,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:49,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:01:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:01:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:01:49,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-09-01 12:01:49,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:49,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-09-01 12:01:49,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:49,747 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-09-01 12:01:49,747 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-09-01 12:01:49,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-09-01 12:01:49,753 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-09-01 12:01:49,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-09-01 12:01:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:01:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:01:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-09-01 12:01:49,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-09-01 12:01:49,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-09-01 12:01:49,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-09-01 12:01:49,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:49,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-09-01 12:01:49,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 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) [2023-09-01 12:01:49,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,768 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,768 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1847 transitions. [2023-09-01 12:01:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-09-01 12:01:49,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 12:01:49,772 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-09-01 12:01:49,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-09-01 12:01:49,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-09-01 12:01:49,774 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-09-01 12:01:49,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:49,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:49,775 INFO L208 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] [2023-09-01 12:01:49,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 12:01:49,776 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)] === [2023-09-01 12:01:49,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-09-01 12:01:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:49,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831789476] [2023-09-01 12:01:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:01:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831789476] [2023-09-01 12:01:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831789476] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:52,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 12:01:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124000570] [2023-09-01 12:01:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 12:01:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 12:01:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-09-01 12:01:53,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-09-01 12:01:53,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 13 states, 13 states have (on average 414.6923076923077) internal successors, (5391), 13 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:53,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:53,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-09-01 12:01:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:01:55,415 INFO L130 PetriNetUnfolder]: 2057/3162 cut-off events. [2023-09-01 12:01:55,416 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-09-01 12:01:55,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 3162 events. 2057/3162 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15935 event pairs, 304 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 7195. Up to 1011 conditions per place. [2023-09-01 12:01:55,432 INFO L137 encePairwiseOnDemand]: 1051/1064 looper letters, 149 selfloop transitions, 11 changer transitions 7/167 dead transitions. [2023-09-01 12:01:55,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 167 transitions, 817 flow [2023-09-01 12:01:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:01:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:01:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5099 transitions. [2023-09-01 12:01:55,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993577694235589 [2023-09-01 12:01:55,445 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5099 transitions. [2023-09-01 12:01:55,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5099 transitions. [2023-09-01 12:01:55,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:01:55,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5099 transitions. [2023-09-01 12:01:55,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 424.9166666666667) internal successors, (5099), 12 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:55,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:55,473 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:55,474 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 12 states and 5099 transitions. [2023-09-01 12:01:55,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 167 transitions, 817 flow [2023-09-01 12:01:55,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 167 transitions, 811 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 12:01:55,484 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 216 flow [2023-09-01 12:01:55,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-09-01 12:01:55,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-09-01 12:01:55,485 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 216 flow [2023-09-01 12:01:55,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 414.6923076923077) internal successors, (5391), 13 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:55,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:01:55,487 INFO L208 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] [2023-09-01 12:01:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 12:01:55,487 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)] === [2023-09-01 12:01:55,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:01:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-09-01 12:01:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:01:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403673965] [2023-09-01 12:01:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:01:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:01:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:01:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:01:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:01:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403673965] [2023-09-01 12:01:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403673965] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:01:57,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:01:57,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:01:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58540500] [2023-09-01 12:01:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:01:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:01:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:01:57,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:01:57,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:01:58,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-09-01 12:01:58,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:01:58,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:01:58,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-09-01 12:01:58,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:00,275 INFO L130 PetriNetUnfolder]: 4081/6398 cut-off events. [2023-09-01 12:02:00,276 INFO L131 PetriNetUnfolder]: For 3403/3403 co-relation queries the response was YES. [2023-09-01 12:02:00,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6398 events. 4081/6398 cut-off events. For 3403/3403 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38481 event pairs, 819 based on Foata normal form. 1/6398 useless extension candidates. Maximal degree in co-relation 16790. Up to 2803 conditions per place. [2023-09-01 12:02:00,321 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 134 selfloop transitions, 12 changer transitions 7/153 dead transitions. [2023-09-01 12:02:00,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 153 transitions, 837 flow [2023-09-01 12:02:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:02:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:02:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3940 transitions. [2023-09-01 12:02:00,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114452798663325 [2023-09-01 12:02:00,331 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3940 transitions. [2023-09-01 12:02:00,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3940 transitions. [2023-09-01 12:02:00,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:00,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3940 transitions. [2023-09-01 12:02:00,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 437.77777777777777) internal successors, (3940), 9 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:00,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:00,359 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:00,359 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 216 flow. Second operand 9 states and 3940 transitions. [2023-09-01 12:02:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 153 transitions, 837 flow [2023-09-01 12:02:00,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 153 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 12:02:00,396 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 307 flow [2023-09-01 12:02:00,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-09-01 12:02:00,398 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-09-01 12:02:00,398 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 307 flow [2023-09-01 12:02:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:00,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:00,399 INFO L208 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] [2023-09-01 12:02:00,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 12:02:00,400 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)] === [2023-09-01 12:02:00,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1268587720, now seen corresponding path program 3 times [2023-09-01 12:02:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736256719] [2023-09-01 12:02:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:02,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736256719] [2023-09-01 12:02:02,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736256719] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:02,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:02,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 12:02:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645637520] [2023-09-01 12:02:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:02,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 12:02:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 12:02:02,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-09-01 12:02:05,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 1064 [2023-09-01 12:02:05,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 403.5) internal successors, (5649), 14 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:05,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:05,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 1064 [2023-09-01 12:02:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:08,523 INFO L130 PetriNetUnfolder]: 5335/8834 cut-off events. [2023-09-01 12:02:08,523 INFO L131 PetriNetUnfolder]: For 10406/10406 co-relation queries the response was YES. [2023-09-01 12:02:08,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 8834 events. 5335/8834 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 60337 event pairs, 1122 based on Foata normal form. 1/8834 useless extension candidates. Maximal degree in co-relation 26143. Up to 2974 conditions per place. [2023-09-01 12:02:08,569 INFO L137 encePairwiseOnDemand]: 1046/1064 looper letters, 172 selfloop transitions, 64 changer transitions 7/243 dead transitions. [2023-09-01 12:02:08,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 243 transitions, 1590 flow [2023-09-01 12:02:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 12:02:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 12:02:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7407 transitions. [2023-09-01 12:02:08,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867481203007519 [2023-09-01 12:02:08,585 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7407 transitions. [2023-09-01 12:02:08,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7407 transitions. [2023-09-01 12:02:08,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:08,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7407 transitions. [2023-09-01 12:02:08,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 411.5) internal successors, (7407), 18 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:08,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:08,624 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:08,624 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 307 flow. Second operand 18 states and 7407 transitions. [2023-09-01 12:02:08,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 243 transitions, 1590 flow [2023-09-01 12:02:08,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 243 transitions, 1580 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-09-01 12:02:08,687 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 934 flow [2023-09-01 12:02:08,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2023-09-01 12:02:08,687 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-09-01 12:02:08,687 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 934 flow [2023-09-01 12:02:08,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 403.5) internal successors, (5649), 14 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:08,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:08,690 INFO L208 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] [2023-09-01 12:02:08,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 12:02:08,690 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)] === [2023-09-01 12:02:08,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:08,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1785788936, now seen corresponding path program 4 times [2023-09-01 12:02:08,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:08,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419302133] [2023-09-01 12:02:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:10,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:10,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419302133] [2023-09-01 12:02:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419302133] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:02:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087403538] [2023-09-01 12:02:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:02:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:02:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:02:11,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-09-01 12:02:11,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:11,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:11,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-09-01 12:02:11,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:13,223 INFO L130 PetriNetUnfolder]: 5889/9930 cut-off events. [2023-09-01 12:02:13,224 INFO L131 PetriNetUnfolder]: For 28769/28769 co-relation queries the response was YES. [2023-09-01 12:02:13,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39219 conditions, 9930 events. 5889/9930 cut-off events. For 28769/28769 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 70810 event pairs, 1305 based on Foata normal form. 1/9930 useless extension candidates. Maximal degree in co-relation 39184. Up to 3953 conditions per place. [2023-09-01 12:02:13,291 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 274 selfloop transitions, 29 changer transitions 7/310 dead transitions. [2023-09-01 12:02:13,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 310 transitions, 2717 flow [2023-09-01 12:02:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:02:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:02:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3948 transitions. [2023-09-01 12:02:13,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2023-09-01 12:02:13,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3948 transitions. [2023-09-01 12:02:13,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3948 transitions. [2023-09-01 12:02:13,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:13,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3948 transitions. [2023-09-01 12:02:13,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.6666666666667) internal successors, (3948), 9 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:13,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:13,315 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:13,316 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 934 flow. Second operand 9 states and 3948 transitions. [2023-09-01 12:02:13,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 310 transitions, 2717 flow [2023-09-01 12:02:13,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 310 transitions, 2638 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-09-01 12:02:13,576 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1121 flow [2023-09-01 12:02:13,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2023-09-01 12:02:13,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-09-01 12:02:13,576 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1121 flow [2023-09-01 12:02:13,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:13,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:13,578 INFO L208 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] [2023-09-01 12:02:13,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 12:02:13,578 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)] === [2023-09-01 12:02:13,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1312490772, now seen corresponding path program 5 times [2023-09-01 12:02:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:13,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629760648] [2023-09-01 12:02:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629760648] [2023-09-01 12:02:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629760648] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:02:16,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775902581] [2023-09-01 12:02:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:16,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:02:16,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:16,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:02:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:02:17,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-09-01 12:02:17,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:17,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:17,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-09-01 12:02:17,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:21,606 INFO L130 PetriNetUnfolder]: 6944/11873 cut-off events. [2023-09-01 12:02:21,606 INFO L131 PetriNetUnfolder]: For 44867/44867 co-relation queries the response was YES. [2023-09-01 12:02:21,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48976 conditions, 11873 events. 6944/11873 cut-off events. For 44867/44867 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87849 event pairs, 1776 based on Foata normal form. 1/11873 useless extension candidates. Maximal degree in co-relation 48935. Up to 6148 conditions per place. [2023-09-01 12:02:21,726 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 230 selfloop transitions, 43 changer transitions 7/280 dead transitions. [2023-09-01 12:02:21,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 2693 flow [2023-09-01 12:02:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:02:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:02:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4253 transitions. [2023-09-01 12:02:21,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399718045112782 [2023-09-01 12:02:21,736 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4253 transitions. [2023-09-01 12:02:21,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4253 transitions. [2023-09-01 12:02:21,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:21,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4253 transitions. [2023-09-01 12:02:21,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 425.3) internal successors, (4253), 10 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:21,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:21,756 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:21,756 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1121 flow. Second operand 10 states and 4253 transitions. [2023-09-01 12:02:21,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 2693 flow [2023-09-01 12:02:22,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 280 transitions, 2634 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-09-01 12:02:22,151 INFO L231 Difference]: Finished difference. Result has 127 places, 145 transitions, 1393 flow [2023-09-01 12:02:22,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=127, PETRI_TRANSITIONS=145} [2023-09-01 12:02:22,153 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-09-01 12:02:22,153 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 145 transitions, 1393 flow [2023-09-01 12:02:22,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:22,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:22,154 INFO L208 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] [2023-09-01 12:02:22,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 12:02:22,155 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)] === [2023-09-01 12:02:22,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1161360985, now seen corresponding path program 1 times [2023-09-01 12:02:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181982480] [2023-09-01 12:02:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:22,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181982480] [2023-09-01 12:02:22,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181982480] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:22,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:22,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:02:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269922057] [2023-09-01 12:02:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:02:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:02:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:02:22,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-09-01 12:02:22,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:22,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:22,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-09-01 12:02:22,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:25,598 INFO L130 PetriNetUnfolder]: 9347/16523 cut-off events. [2023-09-01 12:02:25,598 INFO L131 PetriNetUnfolder]: For 86663/86663 co-relation queries the response was YES. [2023-09-01 12:02:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70143 conditions, 16523 events. 9347/16523 cut-off events. For 86663/86663 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 135666 event pairs, 3438 based on Foata normal form. 248/16770 useless extension candidates. Maximal degree in co-relation 70095. Up to 8790 conditions per place. [2023-09-01 12:02:25,915 INFO L137 encePairwiseOnDemand]: 1058/1064 looper letters, 258 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2023-09-01 12:02:25,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3368 flow [2023-09-01 12:02:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:02:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:02:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2311 transitions. [2023-09-01 12:02:25,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343984962406015 [2023-09-01 12:02:25,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2311 transitions. [2023-09-01 12:02:25,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2311 transitions. [2023-09-01 12:02:25,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:25,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2311 transitions. [2023-09-01 12:02:25,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 462.2) internal successors, (2311), 5 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:25,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:25,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:25,931 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 1393 flow. Second operand 5 states and 2311 transitions. [2023-09-01 12:02:25,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3368 flow [2023-09-01 12:02:26,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3274 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-09-01 12:02:26,675 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1617 flow [2023-09-01 12:02:26,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2023-09-01 12:02:26,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2023-09-01 12:02:26,676 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1617 flow [2023-09-01 12:02:26,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:26,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:26,677 INFO L208 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] [2023-09-01 12:02:26,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 12:02:26,677 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)] === [2023-09-01 12:02:26,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:26,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1918445084, now seen corresponding path program 6 times [2023-09-01 12:02:26,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:26,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615816161] [2023-09-01 12:02:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:26,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:28,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:28,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615816161] [2023-09-01 12:02:28,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615816161] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:28,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:28,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 12:02:28,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626890324] [2023-09-01 12:02:28,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:28,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 12:02:28,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 12:02:28,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-09-01 12:02:31,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 1064 [2023-09-01 12:02:31,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1617 flow. Second operand has 13 states, 13 states have (on average 403.6923076923077) internal successors, (5248), 13 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:31,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:31,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 1064 [2023-09-01 12:02:31,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:37,289 INFO L130 PetriNetUnfolder]: 9370/16593 cut-off events. [2023-09-01 12:02:37,289 INFO L131 PetriNetUnfolder]: For 85888/85888 co-relation queries the response was YES. [2023-09-01 12:02:37,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75956 conditions, 16593 events. 9370/16593 cut-off events. For 85888/85888 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 136810 event pairs, 1154 based on Foata normal form. 1/16593 useless extension candidates. Maximal degree in co-relation 75906. Up to 5499 conditions per place. [2023-09-01 12:02:37,505 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 260 selfloop transitions, 130 changer transitions 7/397 dead transitions. [2023-09-01 12:02:37,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 397 transitions, 4114 flow [2023-09-01 12:02:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 12:02:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 12:02:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7428 transitions. [2023-09-01 12:02:37,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38784461152882205 [2023-09-01 12:02:37,518 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7428 transitions. [2023-09-01 12:02:37,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7428 transitions. [2023-09-01 12:02:37,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:37,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7428 transitions. [2023-09-01 12:02:37,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 412.6666666666667) internal successors, (7428), 18 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:37,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:37,544 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:37,544 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1617 flow. Second operand 18 states and 7428 transitions. [2023-09-01 12:02:37,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 397 transitions, 4114 flow [2023-09-01 12:02:38,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 397 transitions, 4110 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 12:02:38,278 INFO L231 Difference]: Finished difference. Result has 157 places, 222 transitions, 2668 flow [2023-09-01 12:02:38,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=157, PETRI_TRANSITIONS=222} [2023-09-01 12:02:38,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-09-01 12:02:38,279 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 222 transitions, 2668 flow [2023-09-01 12:02:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 403.6923076923077) internal successors, (5248), 13 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:38,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:38,280 INFO L208 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] [2023-09-01 12:02:38,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 12:02:38,280 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)] === [2023-09-01 12:02:38,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:38,281 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 7 times [2023-09-01 12:02:38,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:38,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227978118] [2023-09-01 12:02:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:38,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227978118] [2023-09-01 12:02:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227978118] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:39,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:39,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:02:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696500307] [2023-09-01 12:02:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:39,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:02:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:02:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:02:40,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-09-01 12:02:40,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 222 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:40,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:40,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-09-01 12:02:40,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:44,193 INFO L130 PetriNetUnfolder]: 9569/17260 cut-off events. [2023-09-01 12:02:44,193 INFO L131 PetriNetUnfolder]: For 124559/124559 co-relation queries the response was YES. [2023-09-01 12:02:44,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86201 conditions, 17260 events. 9569/17260 cut-off events. For 124559/124559 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 146290 event pairs, 2246 based on Foata normal form. 1/17260 useless extension candidates. Maximal degree in co-relation 86142. Up to 6581 conditions per place. [2023-09-01 12:02:44,334 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 325 selfloop transitions, 99 changer transitions 8/432 dead transitions. [2023-09-01 12:02:44,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 432 transitions, 5698 flow [2023-09-01 12:02:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:02:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:02:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4285 transitions. [2023-09-01 12:02:44,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40272556390977443 [2023-09-01 12:02:44,339 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4285 transitions. [2023-09-01 12:02:44,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4285 transitions. [2023-09-01 12:02:44,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:44,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4285 transitions. [2023-09-01 12:02:44,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 428.5) internal successors, (4285), 10 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:44,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:44,352 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:44,352 INFO L175 Difference]: Start difference. First operand has 157 places, 222 transitions, 2668 flow. Second operand 10 states and 4285 transitions. [2023-09-01 12:02:44,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 432 transitions, 5698 flow [2023-09-01 12:02:45,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 432 transitions, 5582 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-09-01 12:02:45,644 INFO L231 Difference]: Finished difference. Result has 167 places, 267 transitions, 3618 flow [2023-09-01 12:02:45,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3618, PETRI_PLACES=167, PETRI_TRANSITIONS=267} [2023-09-01 12:02:45,644 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2023-09-01 12:02:45,644 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 267 transitions, 3618 flow [2023-09-01 12:02:45,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:45,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:45,645 INFO L208 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] [2023-09-01 12:02:45,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 12:02:45,645 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)] === [2023-09-01 12:02:45,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash -948365568, now seen corresponding path program 8 times [2023-09-01 12:02:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:45,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130770744] [2023-09-01 12:02:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:47,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:47,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130770744] [2023-09-01 12:02:47,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130770744] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:47,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:47,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 12:02:47,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461418152] [2023-09-01 12:02:47,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:47,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 12:02:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 12:02:47,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-09-01 12:02:48,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 1064 [2023-09-01 12:02:48,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 267 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 405.5) internal successors, (5677), 14 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:48,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:48,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 1064 [2023-09-01 12:02:48,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:02:52,764 INFO L130 PetriNetUnfolder]: 9564/17247 cut-off events. [2023-09-01 12:02:52,764 INFO L131 PetriNetUnfolder]: For 152468/152468 co-relation queries the response was YES. [2023-09-01 12:02:52,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93023 conditions, 17247 events. 9564/17247 cut-off events. For 152468/152468 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 145908 event pairs, 3027 based on Foata normal form. 1/17247 useless extension candidates. Maximal degree in co-relation 92958. Up to 8681 conditions per place. [2023-09-01 12:02:52,906 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 317 selfloop transitions, 86 changer transitions 8/411 dead transitions. [2023-09-01 12:02:52,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 411 transitions, 5896 flow [2023-09-01 12:02:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 12:02:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 12:02:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5385 transitions. [2023-09-01 12:02:52,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38931463273568534 [2023-09-01 12:02:52,913 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5385 transitions. [2023-09-01 12:02:52,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5385 transitions. [2023-09-01 12:02:52,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:02:52,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5385 transitions. [2023-09-01 12:02:52,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 414.2307692307692) internal successors, (5385), 13 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:52,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:52,928 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:52,929 INFO L175 Difference]: Start difference. First operand has 167 places, 267 transitions, 3618 flow. Second operand 13 states and 5385 transitions. [2023-09-01 12:02:52,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 411 transitions, 5896 flow [2023-09-01 12:02:54,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 411 transitions, 5684 flow, removed 64 selfloop flow, removed 3 redundant places. [2023-09-01 12:02:54,767 INFO L231 Difference]: Finished difference. Result has 181 places, 289 transitions, 4154 flow [2023-09-01 12:02:54,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4154, PETRI_PLACES=181, PETRI_TRANSITIONS=289} [2023-09-01 12:02:54,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2023-09-01 12:02:54,768 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 289 transitions, 4154 flow [2023-09-01 12:02:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 405.5) internal successors, (5677), 14 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:54,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:02:54,770 INFO L208 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] [2023-09-01 12:02:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 12:02:54,770 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)] === [2023-09-01 12:02:54,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:02:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -770924642, now seen corresponding path program 9 times [2023-09-01 12:02:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:02:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381482048] [2023-09-01 12:02:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:02:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:02:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:02:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:02:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:02:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381482048] [2023-09-01 12:02:56,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381482048] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:02:56,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:02:56,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:02:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059856705] [2023-09-01 12:02:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:02:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:02:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:02:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:02:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:02:57,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-09-01 12:02:57,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 289 transitions, 4154 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:02:57,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:02:57,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-09-01 12:02:57,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:03:02,623 INFO L130 PetriNetUnfolder]: 11008/19865 cut-off events. [2023-09-01 12:03:02,624 INFO L131 PetriNetUnfolder]: For 190407/190407 co-relation queries the response was YES. [2023-09-01 12:03:03,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108701 conditions, 19865 events. 11008/19865 cut-off events. For 190407/190407 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 171512 event pairs, 2564 based on Foata normal form. 1/19865 useless extension candidates. Maximal degree in co-relation 108631. Up to 9344 conditions per place. [2023-09-01 12:03:03,171 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 423 selfloop transitions, 78 changer transitions 7/508 dead transitions. [2023-09-01 12:03:03,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 508 transitions, 7584 flow [2023-09-01 12:03:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:03:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:03:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3955 transitions. [2023-09-01 12:03:03,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-09-01 12:03:03,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3955 transitions. [2023-09-01 12:03:03,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3955 transitions. [2023-09-01 12:03:03,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:03:03,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3955 transitions. [2023-09-01 12:03:03,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 439.44444444444446) internal successors, (3955), 9 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:03,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:03,189 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:03,189 INFO L175 Difference]: Start difference. First operand has 181 places, 289 transitions, 4154 flow. Second operand 9 states and 3955 transitions. [2023-09-01 12:03:03,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 508 transitions, 7584 flow [2023-09-01 12:03:06,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 508 transitions, 7380 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-09-01 12:03:06,111 INFO L231 Difference]: Finished difference. Result has 187 places, 314 transitions, 4730 flow [2023-09-01 12:03:06,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4037, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4730, PETRI_PLACES=187, PETRI_TRANSITIONS=314} [2023-09-01 12:03:06,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2023-09-01 12:03:06,112 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 314 transitions, 4730 flow [2023-09-01 12:03:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:06,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:03:06,113 INFO L208 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] [2023-09-01 12:03:06,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 12:03:06,113 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)] === [2023-09-01 12:03:06,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:03:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1701044426, now seen corresponding path program 10 times [2023-09-01 12:03:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:03:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068070611] [2023-09-01 12:03:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:03:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:03:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:03:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:03:07,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:03:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068070611] [2023-09-01 12:03:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068070611] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:03:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:03:07,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:03:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588359679] [2023-09-01 12:03:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:03:07,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 12:03:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:03:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 12:03:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-09-01 12:03:09,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-09-01 12:03:09,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 314 transitions, 4730 flow. Second operand has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:09,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:03:09,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-09-01 12:03:09,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:03:15,296 INFO L130 PetriNetUnfolder]: 12254/22399 cut-off events. [2023-09-01 12:03:15,296 INFO L131 PetriNetUnfolder]: For 212135/212135 co-relation queries the response was YES. [2023-09-01 12:03:15,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121963 conditions, 22399 events. 12254/22399 cut-off events. For 212135/212135 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 199758 event pairs, 2513 based on Foata normal form. 1/22399 useless extension candidates. Maximal degree in co-relation 121888. Up to 9772 conditions per place. [2023-09-01 12:03:15,512 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 429 selfloop transitions, 53 changer transitions 7/489 dead transitions. [2023-09-01 12:03:15,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 489 transitions, 7616 flow [2023-09-01 12:03:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:03:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:03:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4667 transitions. [2023-09-01 12:03:15,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987525632262474 [2023-09-01 12:03:15,515 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4667 transitions. [2023-09-01 12:03:15,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4667 transitions. [2023-09-01 12:03:15,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:03:15,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4667 transitions. [2023-09-01 12:03:15,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 424.27272727272725) internal successors, (4667), 11 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:15,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:15,533 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:15,533 INFO L175 Difference]: Start difference. First operand has 187 places, 314 transitions, 4730 flow. Second operand 11 states and 4667 transitions. [2023-09-01 12:03:15,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 489 transitions, 7616 flow [2023-09-01 12:03:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 489 transitions, 7476 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-09-01 12:03:17,874 INFO L231 Difference]: Finished difference. Result has 199 places, 324 transitions, 4988 flow [2023-09-01 12:03:17,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4988, PETRI_PLACES=199, PETRI_TRANSITIONS=324} [2023-09-01 12:03:17,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-09-01 12:03:17,875 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 324 transitions, 4988 flow [2023-09-01 12:03:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:17,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:03:17,876 INFO L208 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] [2023-09-01 12:03:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 12:03:17,876 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)] === [2023-09-01 12:03:17,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:03:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1165370582, now seen corresponding path program 11 times [2023-09-01 12:03:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:03:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201652542] [2023-09-01 12:03:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:03:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:03:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:03:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:03:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:03:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201652542] [2023-09-01 12:03:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201652542] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:03:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:03:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:03:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199166554] [2023-09-01 12:03:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:03:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:03:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:03:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:03:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:03:19,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-09-01 12:03:19,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 324 transitions, 4988 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:19,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:03:19,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-09-01 12:03:19,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:03:26,918 INFO L130 PetriNetUnfolder]: 16860/30772 cut-off events. [2023-09-01 12:03:26,919 INFO L131 PetriNetUnfolder]: For 347694/347694 co-relation queries the response was YES. [2023-09-01 12:03:27,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170136 conditions, 30772 events. 16860/30772 cut-off events. For 347694/347694 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 285896 event pairs, 4772 based on Foata normal form. 2/30773 useless extension candidates. Maximal degree in co-relation 170056. Up to 10862 conditions per place. [2023-09-01 12:03:27,474 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 603 selfloop transitions, 152 changer transitions 16/771 dead transitions. [2023-09-01 12:03:27,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 771 transitions, 11672 flow [2023-09-01 12:03:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 12:03:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 12:03:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7288 transitions. [2023-09-01 12:03:27,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029190623617868 [2023-09-01 12:03:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7288 transitions. [2023-09-01 12:03:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7288 transitions. [2023-09-01 12:03:27,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:03:27,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7288 transitions. [2023-09-01 12:03:27,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 428.70588235294116) internal successors, (7288), 17 states have internal predecessors, (7288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:27,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:27,502 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:27,503 INFO L175 Difference]: Start difference. First operand has 199 places, 324 transitions, 4988 flow. Second operand 17 states and 7288 transitions. [2023-09-01 12:03:27,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 771 transitions, 11672 flow [2023-09-01 12:03:31,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 771 transitions, 11503 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-09-01 12:03:31,830 INFO L231 Difference]: Finished difference. Result has 224 places, 404 transitions, 6993 flow [2023-09-01 12:03:31,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4910, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6993, PETRI_PLACES=224, PETRI_TRANSITIONS=404} [2023-09-01 12:03:31,831 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-09-01 12:03:31,831 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 404 transitions, 6993 flow [2023-09-01 12:03:31,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:31,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:03:31,833 INFO L208 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] [2023-09-01 12:03:31,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 12:03:31,833 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)] === [2023-09-01 12:03:31,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:03:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1478290662, now seen corresponding path program 12 times [2023-09-01 12:03:31,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:03:31,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573964911] [2023-09-01 12:03:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:03:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:03:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:03:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:03:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:03:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573964911] [2023-09-01 12:03:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573964911] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:03:33,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:03:33,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 12:03:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831369913] [2023-09-01 12:03:33,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:03:33,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 12:03:33,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:03:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 12:03:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-09-01 12:03:34,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-09-01 12:03:34,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 404 transitions, 6993 flow. Second operand has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:34,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:03:34,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-09-01 12:03:34,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:03:49,788 INFO L130 PetriNetUnfolder]: 24515/44858 cut-off events. [2023-09-01 12:03:49,789 INFO L131 PetriNetUnfolder]: For 528886/528886 co-relation queries the response was YES. [2023-09-01 12:03:50,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257531 conditions, 44858 events. 24515/44858 cut-off events. For 528886/528886 co-relation queries the response was YES. Maximal size of possible extension queue 3065. Compared 443078 event pairs, 8839 based on Foata normal form. 2/44859 useless extension candidates. Maximal degree in co-relation 257437. Up to 19099 conditions per place. [2023-09-01 12:03:51,116 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 734 selfloop transitions, 100 changer transitions 7/841 dead transitions. [2023-09-01 12:03:51,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 841 transitions, 15062 flow [2023-09-01 12:03:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:03:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:03:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4298 transitions. [2023-09-01 12:03:51,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039473684210526 [2023-09-01 12:03:51,121 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4298 transitions. [2023-09-01 12:03:51,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4298 transitions. [2023-09-01 12:03:51,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:03:51,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4298 transitions. [2023-09-01 12:03:51,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 429.8) internal successors, (4298), 10 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:51,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:51,150 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:03:51,150 INFO L175 Difference]: Start difference. First operand has 224 places, 404 transitions, 6993 flow. Second operand 10 states and 4298 transitions. [2023-09-01 12:03:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 841 transitions, 15062 flow [2023-09-01 12:04:02,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 841 transitions, 14769 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-09-01 12:04:02,451 INFO L231 Difference]: Finished difference. Result has 235 places, 467 transitions, 8600 flow [2023-09-01 12:04:02,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8600, PETRI_PLACES=235, PETRI_TRANSITIONS=467} [2023-09-01 12:04:02,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2023-09-01 12:04:02,452 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 467 transitions, 8600 flow [2023-09-01 12:04:02,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:02,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:04:02,453 INFO L208 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] [2023-09-01 12:04:02,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 12:04:02,453 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)] === [2023-09-01 12:04:02,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:04:02,453 INFO L85 PathProgramCache]: Analyzing trace with hash -447950648, now seen corresponding path program 13 times [2023-09-01 12:04:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:04:02,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751138610] [2023-09-01 12:04:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:04:02,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:04:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:04:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:04:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:04:04,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751138610] [2023-09-01 12:04:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751138610] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:04:04,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:04:04,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:04:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626600091] [2023-09-01 12:04:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:04:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:04:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:04:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:04:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:04:05,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 1064 [2023-09-01 12:04:05,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 467 transitions, 8600 flow. Second operand has 10 states, 10 states have (on average 420.5) internal successors, (4205), 10 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:05,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:04:05,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 1064 [2023-09-01 12:04:05,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:04:26,303 INFO L130 PetriNetUnfolder]: 30871/56791 cut-off events. [2023-09-01 12:04:26,303 INFO L131 PetriNetUnfolder]: For 739638/739638 co-relation queries the response was YES. [2023-09-01 12:04:27,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332116 conditions, 56791 events. 30871/56791 cut-off events. For 739638/739638 co-relation queries the response was YES. Maximal size of possible extension queue 3875. Compared 581275 event pairs, 12627 based on Foata normal form. 2/56792 useless extension candidates. Maximal degree in co-relation 332017. Up to 28003 conditions per place. [2023-09-01 12:04:28,132 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 876 selfloop transitions, 160 changer transitions 14/1050 dead transitions. [2023-09-01 12:04:28,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1050 transitions, 18904 flow [2023-09-01 12:04:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 12:04:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 12:04:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6915 transitions. [2023-09-01 12:04:28,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40619125939849626 [2023-09-01 12:04:28,138 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6915 transitions. [2023-09-01 12:04:28,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6915 transitions. [2023-09-01 12:04:28,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:04:28,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6915 transitions. [2023-09-01 12:04:28,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 432.1875) internal successors, (6915), 16 states have internal predecessors, (6915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:28,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:28,157 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:28,157 INFO L175 Difference]: Start difference. First operand has 235 places, 467 transitions, 8600 flow. Second operand 16 states and 6915 transitions. [2023-09-01 12:04:28,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1050 transitions, 18904 flow [2023-09-01 12:04:50,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1050 transitions, 18683 flow, removed 101 selfloop flow, removed 3 redundant places. [2023-09-01 12:04:50,807 INFO L231 Difference]: Finished difference. Result has 259 places, 528 transitions, 10555 flow [2023-09-01 12:04:50,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10555, PETRI_PLACES=259, PETRI_TRANSITIONS=528} [2023-09-01 12:04:50,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2023-09-01 12:04:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 528 transitions, 10555 flow [2023-09-01 12:04:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 420.5) internal successors, (4205), 10 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:50,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:04:50,810 INFO L208 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] [2023-09-01 12:04:50,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 12:04:50,811 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:04:50,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:04:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1864998854, now seen corresponding path program 14 times [2023-09-01 12:04:50,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:04:50,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070392994] [2023-09-01 12:04:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:04:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:04:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:04:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:04:52,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:04:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070392994] [2023-09-01 12:04:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070392994] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:04:52,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:04:52,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:04:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30394767] [2023-09-01 12:04:52,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:04:52,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:04:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:04:52,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:04:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:04:54,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-09-01 12:04:54,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 528 transitions, 10555 flow. Second operand has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:04:54,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:04:54,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-09-01 12:04:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:05:19,452 INFO L130 PetriNetUnfolder]: 30869/56774 cut-off events. [2023-09-01 12:05:19,453 INFO L131 PetriNetUnfolder]: For 803964/803964 co-relation queries the response was YES. [2023-09-01 12:05:21,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339350 conditions, 56774 events. 30869/56774 cut-off events. For 803964/803964 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 581699 event pairs, 9335 based on Foata normal form. 1/56774 useless extension candidates. Maximal degree in co-relation 339239. Up to 26768 conditions per place. [2023-09-01 12:05:21,587 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 429 selfloop transitions, 460 changer transitions 7/896 dead transitions. [2023-09-01 12:05:21,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 896 transitions, 17622 flow [2023-09-01 12:05:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 12:05:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 12:05:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6373 transitions. [2023-09-01 12:05:21,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993107769423559 [2023-09-01 12:05:21,593 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6373 transitions. [2023-09-01 12:05:21,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6373 transitions. [2023-09-01 12:05:21,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:05:21,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6373 transitions. [2023-09-01 12:05:21,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 424.8666666666667) internal successors, (6373), 15 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:05:21,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:05:21,612 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:05:21,612 INFO L175 Difference]: Start difference. First operand has 259 places, 528 transitions, 10555 flow. Second operand 15 states and 6373 transitions. [2023-09-01 12:05:21,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 896 transitions, 17622 flow [2023-09-01 12:05:47,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 896 transitions, 17479 flow, removed 71 selfloop flow, removed 3 redundant places. [2023-09-01 12:05:47,277 INFO L231 Difference]: Finished difference. Result has 276 places, 702 transitions, 14937 flow [2023-09-01 12:05:47,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=10450, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14937, PETRI_PLACES=276, PETRI_TRANSITIONS=702} [2023-09-01 12:05:47,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2023-09-01 12:05:47,278 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 702 transitions, 14937 flow [2023-09-01 12:05:47,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:05:47,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:05:47,279 INFO L208 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] [2023-09-01 12:05:47,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 12:05:47,279 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:05:47,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:05:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1317815394, now seen corresponding path program 15 times [2023-09-01 12:05:47,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:05:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457312676] [2023-09-01 12:05:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:05:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:05:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:05:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:05:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:05:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457312676] [2023-09-01 12:05:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457312676] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:05:48,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:05:48,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:05:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350022688] [2023-09-01 12:05:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:05:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:05:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:05:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:05:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:05:49,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-09-01 12:05:49,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 702 transitions, 14937 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:05:49,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:05:49,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-09-01 12:05:49,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:06:13,633 INFO L130 PetriNetUnfolder]: 33320/61333 cut-off events. [2023-09-01 12:06:13,633 INFO L131 PetriNetUnfolder]: For 1000612/1000612 co-relation queries the response was YES. [2023-09-01 12:06:15,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386771 conditions, 61333 events. 33320/61333 cut-off events. For 1000612/1000612 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 633571 event pairs, 13362 based on Foata normal form. 2/61334 useless extension candidates. Maximal degree in co-relation 386654. Up to 28004 conditions per place. [2023-09-01 12:06:16,078 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1005 selfloop transitions, 211 changer transitions 16/1232 dead transitions. [2023-09-01 12:06:16,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1232 transitions, 25059 flow [2023-09-01 12:06:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 12:06:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 12:06:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6595 transitions. [2023-09-01 12:06:16,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132205513784461 [2023-09-01 12:06:16,111 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6595 transitions. [2023-09-01 12:06:16,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6595 transitions. [2023-09-01 12:06:16,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:06:16,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6595 transitions. [2023-09-01 12:06:16,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 439.6666666666667) internal successors, (6595), 15 states have internal predecessors, (6595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:06:16,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:06:16,127 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:06:16,128 INFO L175 Difference]: Start difference. First operand has 276 places, 702 transitions, 14937 flow. Second operand 15 states and 6595 transitions. [2023-09-01 12:06:16,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1232 transitions, 25059 flow [2023-09-01 12:07:03,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1232 transitions, 24749 flow, removed 155 selfloop flow, removed 1 redundant places. [2023-09-01 12:07:03,942 INFO L231 Difference]: Finished difference. Result has 298 places, 749 transitions, 16646 flow [2023-09-01 12:07:03,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14759, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16646, PETRI_PLACES=298, PETRI_TRANSITIONS=749} [2023-09-01 12:07:03,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-09-01 12:07:03,943 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 749 transitions, 16646 flow [2023-09-01 12:07:03,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:07:03,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:07:03,944 INFO L208 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] [2023-09-01 12:07:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 12:07:03,944 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:07:03,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:07:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 16 times [2023-09-01 12:07:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:07:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220345453] [2023-09-01 12:07:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:07:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:07:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:07:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:07:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:07:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220345453] [2023-09-01 12:07:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220345453] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:07:05,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:07:05,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:07:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421396863] [2023-09-01 12:07:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:07:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:07:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:07:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:07:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:07:05,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-09-01 12:07:05,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 749 transitions, 16646 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:07:05,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:07:05,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-09-01 12:07:05,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:07:30,896 INFO L130 PetriNetUnfolder]: 33317/61347 cut-off events. [2023-09-01 12:07:30,896 INFO L131 PetriNetUnfolder]: For 1014682/1014682 co-relation queries the response was YES. [2023-09-01 12:07:33,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389198 conditions, 61347 events. 33317/61347 cut-off events. For 1014682/1014682 co-relation queries the response was YES. Maximal size of possible extension queue 4180. Compared 634775 event pairs, 11205 based on Foata normal form. 1/61347 useless extension candidates. Maximal degree in co-relation 389071. Up to 28119 conditions per place. [2023-09-01 12:07:33,642 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 403 selfloop transitions, 518 changer transitions 7/928 dead transitions. [2023-09-01 12:07:33,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 928 transitions, 20423 flow [2023-09-01 12:07:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 12:07:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 12:07:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6412 transitions. [2023-09-01 12:07:33,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017543859649123 [2023-09-01 12:07:33,648 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6412 transitions. [2023-09-01 12:07:33,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6412 transitions. [2023-09-01 12:07:33,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:07:33,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6412 transitions. [2023-09-01 12:07:33,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 427.46666666666664) internal successors, (6412), 15 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:07:33,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:07:33,666 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:07:33,667 INFO L175 Difference]: Start difference. First operand has 298 places, 749 transitions, 16646 flow. Second operand 15 states and 6412 transitions. [2023-09-01 12:07:33,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 928 transitions, 20423 flow [2023-09-01 12:08:12,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 928 transitions, 19968 flow, removed 94 selfloop flow, removed 6 redundant places. [2023-09-01 12:08:12,341 INFO L231 Difference]: Finished difference. Result has 311 places, 768 transitions, 18052 flow [2023-09-01 12:08:12,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16215, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18052, PETRI_PLACES=311, PETRI_TRANSITIONS=768} [2023-09-01 12:08:12,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-09-01 12:08:12,343 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 768 transitions, 18052 flow [2023-09-01 12:08:12,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:08:12,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:08:12,344 INFO L208 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] [2023-09-01 12:08:12,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 12:08:12,344 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:08:12,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:08:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash -317965381, now seen corresponding path program 2 times [2023-09-01 12:08:12,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:08:12,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794519884] [2023-09-01 12:08:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:08:12,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:08:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:08:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:08:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:08:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794519884] [2023-09-01 12:08:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794519884] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:08:12,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:08:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:08:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627919468] [2023-09-01 12:08:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:08:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:08:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:08:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:08:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:08:12,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-09-01 12:08:12,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 768 transitions, 18052 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:08:12,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:08:12,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-09-01 12:08:12,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:08:41,041 INFO L130 PetriNetUnfolder]: 39389/73419 cut-off events. [2023-09-01 12:08:41,042 INFO L131 PetriNetUnfolder]: For 1377659/1377659 co-relation queries the response was YES. [2023-09-01 12:08:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480271 conditions, 73419 events. 39389/73419 cut-off events. For 1377659/1377659 co-relation queries the response was YES. Maximal size of possible extension queue 4819. Compared 786743 event pairs, 10546 based on Foata normal form. 789/74207 useless extension candidates. Maximal degree in co-relation 480139. Up to 32138 conditions per place. [2023-09-01 12:08:44,240 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 1096 selfloop transitions, 206 changer transitions 0/1302 dead transitions. [2023-09-01 12:08:44,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1302 transitions, 32290 flow [2023-09-01 12:08:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:08:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:08:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1870 transitions. [2023-09-01 12:08:44,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393796992481203 [2023-09-01 12:08:44,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1870 transitions. [2023-09-01 12:08:44,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1870 transitions. [2023-09-01 12:08:44,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:08:44,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1870 transitions. [2023-09-01 12:08:44,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 467.5) internal successors, (1870), 4 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:08:44,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:08:44,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:08:44,248 INFO L175 Difference]: Start difference. First operand has 311 places, 768 transitions, 18052 flow. Second operand 4 states and 1870 transitions. [2023-09-01 12:08:44,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1302 transitions, 32290 flow [2023-09-01 12:09:37,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1302 transitions, 31026 flow, removed 178 selfloop flow, removed 5 redundant places. [2023-09-01 12:09:37,709 INFO L231 Difference]: Finished difference. Result has 311 places, 841 transitions, 20192 flow [2023-09-01 12:09:37,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17068, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=20192, PETRI_PLACES=311, PETRI_TRANSITIONS=841} [2023-09-01 12:09:37,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-09-01 12:09:37,710 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 841 transitions, 20192 flow [2023-09-01 12:09:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:09:37,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:09:37,711 INFO L208 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] [2023-09-01 12:09:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 12:09:37,712 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:09:37,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:09:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1330045670, now seen corresponding path program 17 times [2023-09-01 12:09:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:09:37,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700930168] [2023-09-01 12:09:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:09:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:09:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:09:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:09:39,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:09:39,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700930168] [2023-09-01 12:09:39,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700930168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:09:39,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:09:39,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:09:39,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113976760] [2023-09-01 12:09:39,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:09:39,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:09:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:09:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:09:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:09:40,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-09-01 12:09:40,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 841 transitions, 20192 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:09:40,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:09:40,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-09-01 12:09:40,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:10:16,859 INFO L130 PetriNetUnfolder]: 41546/77438 cut-off events. [2023-09-01 12:10:16,859 INFO L131 PetriNetUnfolder]: For 1418452/1418452 co-relation queries the response was YES. [2023-09-01 12:10:19,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517543 conditions, 77438 events. 41546/77438 cut-off events. For 1418452/1418452 co-relation queries the response was YES. Maximal size of possible extension queue 5089. Compared 830930 event pairs, 19593 based on Foata normal form. 2/77439 useless extension candidates. Maximal degree in co-relation 517410. Up to 35892 conditions per place. [2023-09-01 12:10:19,312 INFO L137 encePairwiseOnDemand]: 1050/1064 looper letters, 1153 selfloop transitions, 280 changer transitions 16/1449 dead transitions. [2023-09-01 12:10:19,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1449 transitions, 32823 flow [2023-09-01 12:10:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 12:10:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 12:10:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7315 transitions. [2023-09-01 12:10:19,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2023-09-01 12:10:19,318 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7315 transitions. [2023-09-01 12:10:19,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7315 transitions. [2023-09-01 12:10:19,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:10:19,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7315 transitions. [2023-09-01 12:10:19,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 430.29411764705884) internal successors, (7315), 17 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:10:19,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:10:19,336 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:10:19,336 INFO L175 Difference]: Start difference. First operand has 311 places, 841 transitions, 20192 flow. Second operand 17 states and 7315 transitions. [2023-09-01 12:10:19,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1449 transitions, 32823 flow [2023-09-01 12:11:19,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1449 transitions, 32807 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-09-01 12:11:19,178 INFO L231 Difference]: Finished difference. Result has 341 places, 908 transitions, 22973 flow [2023-09-01 12:11:19,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20190, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22973, PETRI_PLACES=341, PETRI_TRANSITIONS=908} [2023-09-01 12:11:19,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2023-09-01 12:11:19,179 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 908 transitions, 22973 flow [2023-09-01 12:11:19,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:11:19,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:11:19,180 INFO L208 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] [2023-09-01 12:11:19,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 12:11:19,180 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:11:19,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:11:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 3 times [2023-09-01 12:11:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:11:19,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144253868] [2023-09-01 12:11:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:11:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:11:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:11:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:11:19,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:11:19,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144253868] [2023-09-01 12:11:19,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144253868] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:11:19,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:11:19,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:11:19,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533922915] [2023-09-01 12:11:19,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:11:19,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:11:19,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:11:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:11:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:11:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-09-01 12:11:19,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 908 transitions, 22973 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:11:19,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:11:19,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-09-01 12:11:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:11:48,168 INFO L130 PetriNetUnfolder]: 42071/76230 cut-off events. [2023-09-01 12:11:48,168 INFO L131 PetriNetUnfolder]: For 1524772/1524772 co-relation queries the response was YES. [2023-09-01 12:11:50,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516578 conditions, 76230 events. 42071/76230 cut-off events. For 1524772/1524772 co-relation queries the response was YES. Maximal size of possible extension queue 4880. Compared 792088 event pairs, 10702 based on Foata normal form. 781/77010 useless extension candidates. Maximal degree in co-relation 516430. Up to 37857 conditions per place. [2023-09-01 12:11:50,593 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 966 selfloop transitions, 269 changer transitions 0/1235 dead transitions. [2023-09-01 12:11:50,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1235 transitions, 31633 flow [2023-09-01 12:11:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:11:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:11:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1866 transitions. [2023-09-01 12:11:50,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843984962406013 [2023-09-01 12:11:50,595 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1866 transitions. [2023-09-01 12:11:50,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1866 transitions. [2023-09-01 12:11:50,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:11:50,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1866 transitions. [2023-09-01 12:11:50,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 466.5) internal successors, (1866), 4 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:11:50,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:11:50,599 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:11:50,599 INFO L175 Difference]: Start difference. First operand has 341 places, 908 transitions, 22973 flow. Second operand 4 states and 1866 transitions. [2023-09-01 12:11:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1235 transitions, 31633 flow [2023-09-01 12:12:32,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1235 transitions, 30772 flow, removed 240 selfloop flow, removed 5 redundant places. [2023-09-01 12:12:32,484 INFO L231 Difference]: Finished difference. Result has 339 places, 942 transitions, 23740 flow [2023-09-01 12:12:32,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19921, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=23740, PETRI_PLACES=339, PETRI_TRANSITIONS=942} [2023-09-01 12:12:32,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2023-09-01 12:12:32,486 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 942 transitions, 23740 flow [2023-09-01 12:12:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:12:32,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:12:32,486 INFO L208 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] [2023-09-01 12:12:32,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 12:12:32,487 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:12:32,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:12:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash -777514146, now seen corresponding path program 18 times [2023-09-01 12:12:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:12:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111884911] [2023-09-01 12:12:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:12:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:12:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:12:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 12:12:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:12:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111884911] [2023-09-01 12:12:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111884911] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:12:33,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:12:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:12:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516310461] [2023-09-01 12:12:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:12:33,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:12:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:12:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:12:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:12:34,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-09-01 12:12:34,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 942 transitions, 23740 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:12:34,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:12:34,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-09-01 12:12:34,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:13:04,044 INFO L130 PetriNetUnfolder]: 42071/76229 cut-off events. [2023-09-01 12:13:04,044 INFO L131 PetriNetUnfolder]: For 1497092/1497092 co-relation queries the response was YES. [2023-09-01 12:13:06,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526524 conditions, 76229 events. 42071/76229 cut-off events. For 1497092/1497092 co-relation queries the response was YES. Maximal size of possible extension queue 4799. Compared 787673 event pairs, 21493 based on Foata normal form. 1/76229 useless extension candidates. Maximal degree in co-relation 526377. Up to 52952 conditions per place. [2023-09-01 12:13:06,482 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 726 selfloop transitions, 330 changer transitions 7/1063 dead transitions. [2023-09-01 12:13:06,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1063 transitions, 27274 flow [2023-09-01 12:13:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:13:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:13:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3948 transitions. [2023-09-01 12:13:06,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2023-09-01 12:13:06,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3948 transitions. [2023-09-01 12:13:06,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3948 transitions. [2023-09-01 12:13:06,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:13:06,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3948 transitions. [2023-09-01 12:13:06,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.6666666666667) internal successors, (3948), 9 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:13:06,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:13:06,491 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:13:06,491 INFO L175 Difference]: Start difference. First operand has 339 places, 942 transitions, 23740 flow. Second operand 9 states and 3948 transitions. [2023-09-01 12:13:06,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1063 transitions, 27274 flow [2023-09-01 12:13:54,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1063 transitions, 27242 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-09-01 12:13:54,809 INFO L231 Difference]: Finished difference. Result has 348 places, 941 transitions, 24346 flow [2023-09-01 12:13:54,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=23710, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24346, PETRI_PLACES=348, PETRI_TRANSITIONS=941} [2023-09-01 12:13:54,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2023-09-01 12:13:54,810 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 941 transitions, 24346 flow [2023-09-01 12:13:54,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:13:54,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:13:54,811 INFO L208 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] [2023-09-01 12:13:54,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 12:13:54,811 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:13:54,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:13:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash 117954734, now seen corresponding path program 19 times [2023-09-01 12:13:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:13:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286816063] [2023-09-01 12:13:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:13:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:13:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:13:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 12:13:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:13:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286816063] [2023-09-01 12:13:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286816063] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:13:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818021283] [2023-09-01 12:13:56,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 12:13:56,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:13:56,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:13:56,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:13:56,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 12:13:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:13:56,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 12:13:56,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... Killed by 15