./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --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/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --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 09:53:12,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:53:12,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:53:12,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:53:12,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:53:12,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:53:12,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:53:12,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:53:12,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:53:12,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:53:12,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:53:12,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:53:12,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:53:12,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:53:12,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:53:12,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:53:12,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:53:12,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:53:12,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:53:12,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:53:12,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:53:12,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:53:12,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:53:12,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:53:12,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:53:12,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:53:12,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:53:12,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:53:12,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:53:12,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:53:12,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:53:12,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:53:12,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:53:12,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:53:12,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:53:12,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:53:12,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:53:12,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:53:12,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:53:12,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:53:12,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:53:12,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:53:12,620 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:53:12,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:53:12,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:53:12,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:53:12,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:53:12,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:53:12,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:53:12,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:53:12,623 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:53:12,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:53:12,624 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:53:12,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:53:12,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:53:12,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:53:12,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:53:12,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:53:12,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:53:12,625 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:53:12,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:53:12,625 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:53:12,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:53:12,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:53:12,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:53:12,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:53:12,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:12,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:53:12,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:53:12,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:53:12,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:53:12,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:53:12,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:53:12,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:53:12,627 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:53:12,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:53:12,627 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:53:12,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:53:12,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:53:12,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:53:12,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:53:12,839 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:53:12,839 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:53:12,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-09-01 09:53:13,840 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:53:14,068 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:53:14,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-09-01 09:53:14,082 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e1668d1/46b9c07af73443f18d2b053ca67b93db/FLAG43cf44daa [2023-09-01 09:53:14,099 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e1668d1/46b9c07af73443f18d2b053ca67b93db [2023-09-01 09:53:14,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:53:14,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:53:14,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:14,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:53:14,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:53:14,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f303d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14, skipping insertion in model container [2023-09-01 09:53:14,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:53:14,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:53:14,254 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-09-01 09:53:14,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:14,421 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:53:14,435 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-09-01 09:53:14,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:14,528 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:14,529 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:14,535 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:53:14,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14 WrapperNode [2023-09-01 09:53:14,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:14,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:14,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:53:14,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:53:14,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,597 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-09-01 09:53:14,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:14,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:53:14,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:53:14,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:53:14,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:53:14,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:53:14,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:53:14,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:53:14,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (1/1) ... [2023-09-01 09:53:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:53:14,666 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 09:53:14,686 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 09:53:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:53:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:53:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:53:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:53:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:53:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:53:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:53:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:53:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:53:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:53:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:53:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:53:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:53:14,714 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 09:53:14,852 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:53:14,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:53:15,088 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:53:15,203 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:53:15,204 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:53:15,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:15 BoogieIcfgContainer [2023-09-01 09:53:15,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:53:15,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:53:15,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:53:15,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:53:15,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:53:14" (1/3) ... [2023-09-01 09:53:15,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e770f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:15, skipping insertion in model container [2023-09-01 09:53:15,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:14" (2/3) ... [2023-09-01 09:53:15,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e770f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:15, skipping insertion in model container [2023-09-01 09:53:15,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:15" (3/3) ... [2023-09-01 09:53:15,211 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-09-01 09:53:15,216 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:53:15,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:53:15,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 09:53:15,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:53:15,270 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:53:15,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-09-01 09:53:15,339 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-09-01 09:53:15,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:15,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-09-01 09:53:15,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-09-01 09:53:15,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:15,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:53:15,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:15,366 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:15,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:15,391 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-09-01 09:53:15,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-09-01 09:53:15,393 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-09-01 09:53:18,577 INFO L134 LiptonReduction]: Checked pairs total: 3453 [2023-09-01 09:53:18,577 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-09-01 09:53:18,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:53:18,590 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;@6ed35657, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:53:18,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 09:53:18,592 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-09-01 09:53:18,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:18,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:18,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 09:53:18,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:18,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash 469001348, now seen corresponding path program 1 times [2023-09-01 09:53:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:18,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444424553] [2023-09-01 09:53:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:18,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:18,905 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 09:53:18,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444424553] [2023-09-01 09:53:18,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444424553] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:18,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:18,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:53:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924086602] [2023-09-01 09:53:18,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:53:18,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:53:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:53:18,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-09-01 09:53:18,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 09:53:18,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:18,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-09-01 09:53:18,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:19,080 INFO L130 PetriNetUnfolder]: 275/468 cut-off events. [2023-09-01 09:53:19,081 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 09:53:19,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1808 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-09-01 09:53:19,086 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-09-01 09:53:19,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-09-01 09:53:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-09-01 09:53:19,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49903660886319845 [2023-09-01 09:53:19,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-09-01 09:53:19,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-09-01 09:53:19,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:19,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-09-01 09:53:19,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 09:53:19,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 09:53:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 09:53:19,103 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 259 transitions. [2023-09-01 09:53:19,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-09-01 09:53:19,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:19,106 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-09-01 09:53:19,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-09-01 09:53:19,109 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-09-01 09:53:19,110 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-09-01 09:53:19,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 09:53:19,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:19,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:19,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:53:19,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:19,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash -261224281, now seen corresponding path program 1 times [2023-09-01 09:53:19,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:19,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354372300] [2023-09-01 09:53:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:19,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:19,690 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 09:53:19,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:19,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354372300] [2023-09-01 09:53:19,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354372300] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:19,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:19,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:53:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440155605] [2023-09-01 09:53:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:53:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:53:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:53:19,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-09-01 09:53:19,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 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 09:53:19,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:19,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-09-01 09:53:19,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:19,840 INFO L130 PetriNetUnfolder]: 182/321 cut-off events. [2023-09-01 09:53:19,840 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 09:53:19,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 321 events. 182/321 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1109 event pairs, 80 based on Foata normal form. 18/339 useless extension candidates. Maximal degree in co-relation 671. Up to 193 conditions per place. [2023-09-01 09:53:19,843 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-09-01 09:53:19,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 116 flow [2023-09-01 09:53:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-09-01 09:53:19,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45664739884393063 [2023-09-01 09:53:19,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-09-01 09:53:19,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-09-01 09:53:19,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:19,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-09-01 09:53:19,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 09:53:19,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 09:53:19,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 09:53:19,851 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 237 transitions. [2023-09-01 09:53:19,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 116 flow [2023-09-01 09:53:19,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:19,852 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-09-01 09:53:19,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-09-01 09:53:19,853 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-09-01 09:53:19,853 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-09-01 09:53:19,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 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 09:53:19,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:19,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:19,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:53:19,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:19,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:19,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1688167736, now seen corresponding path program 1 times [2023-09-01 09:53:19,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337661203] [2023-09-01 09:53:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:19,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:20,348 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 09:53:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337661203] [2023-09-01 09:53:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337661203] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:20,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:20,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:53:20,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407771117] [2023-09-01 09:53:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:53:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:53:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:53:20,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-09-01 09:53:20,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 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 09:53:20,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:20,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-09-01 09:53:20,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:20,482 INFO L130 PetriNetUnfolder]: 172/305 cut-off events. [2023-09-01 09:53:20,483 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-09-01 09:53:20,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 305 events. 172/305 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1009 event pairs, 56 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 670. Up to 210 conditions per place. [2023-09-01 09:53:20,484 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-09-01 09:53:20,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 111 flow [2023-09-01 09:53:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-09-01 09:53:20,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-09-01 09:53:20,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-09-01 09:53:20,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-09-01 09:53:20,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:20,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-09-01 09:53:20,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 09:53:20,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 09:53:20,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 09:53:20,488 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 235 transitions. [2023-09-01 09:53:20,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 111 flow [2023-09-01 09:53:20,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:20,488 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-09-01 09:53:20,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-09-01 09:53:20,489 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-09-01 09:53:20,489 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-09-01 09:53:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 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 09:53:20,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:20,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:20,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:53:20,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:20,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2112271550, now seen corresponding path program 1 times [2023-09-01 09:53:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614356680] [2023-09-01 09:53:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:21,349 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 09:53:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:21,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614356680] [2023-09-01 09:53:21,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614356680] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:21,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:21,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:21,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111618586] [2023-09-01 09:53:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:21,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:21,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:21,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:21,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:21,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-09-01 09:53:21,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 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 09:53:21,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:21,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-09-01 09:53:21,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:21,596 INFO L130 PetriNetUnfolder]: 211/371 cut-off events. [2023-09-01 09:53:21,596 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 09:53:21,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 371 events. 211/371 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1339 event pairs, 21 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 860. Up to 172 conditions per place. [2023-09-01 09:53:21,598 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 38 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-09-01 09:53:21,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 200 flow [2023-09-01 09:53:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:53:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:53:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-09-01 09:53:21,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489402697495183 [2023-09-01 09:53:21,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-09-01 09:53:21,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-09-01 09:53:21,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:21,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-09-01 09:53:21,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 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 09:53:21,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 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 09:53:21,607 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 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 09:53:21,607 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 6 states and 466 transitions. [2023-09-01 09:53:21,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 200 flow [2023-09-01 09:53:21,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:21,610 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 77 flow [2023-09-01 09:53:21,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-09-01 09:53:21,611 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-09-01 09:53:21,611 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 77 flow [2023-09-01 09:53:21,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 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 09:53:21,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:21,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:21,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:53:21,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:21,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash -299346199, now seen corresponding path program 1 times [2023-09-01 09:53:21,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:21,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342449577] [2023-09-01 09:53:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:22,150 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 09:53:22,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:22,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342449577] [2023-09-01 09:53:22,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342449577] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:22,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:22,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:53:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055129823] [2023-09-01 09:53:22,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:22,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:22,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:22,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 173 [2023-09-01 09:53:22,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 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 09:53:22,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:22,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 173 [2023-09-01 09:53:22,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:22,414 INFO L130 PetriNetUnfolder]: 270/474 cut-off events. [2023-09-01 09:53:22,414 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2023-09-01 09:53:22,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 474 events. 270/474 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1841 event pairs, 21 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 1220. Up to 326 conditions per place. [2023-09-01 09:53:22,417 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-09-01 09:53:22,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 271 flow [2023-09-01 09:53:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:53:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:53:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2023-09-01 09:53:22,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44026974951830444 [2023-09-01 09:53:22,419 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 457 transitions. [2023-09-01 09:53:22,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 457 transitions. [2023-09-01 09:53:22,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:22,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 457 transitions. [2023-09-01 09:53:22,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 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 09:53:22,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 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 09:53:22,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 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 09:53:22,421 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 77 flow. Second operand 6 states and 457 transitions. [2023-09-01 09:53:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 271 flow [2023-09-01 09:53:22,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:53:22,423 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 198 flow [2023-09-01 09:53:22,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-09-01 09:53:22,424 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-09-01 09:53:22,424 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 198 flow [2023-09-01 09:53:22,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 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 09:53:22,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:22,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:22,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:53:22,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:22,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash 483559013, now seen corresponding path program 2 times [2023-09-01 09:53:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:22,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607460608] [2023-09-01 09:53:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:22,748 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 09:53:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607460608] [2023-09-01 09:53:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607460608] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:22,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:53:22,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198846829] [2023-09-01 09:53:22,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:22,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:22,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:22,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-09-01 09:53:22,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 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 09:53:22,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:22,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-09-01 09:53:22,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:22,934 INFO L130 PetriNetUnfolder]: 355/633 cut-off events. [2023-09-01 09:53:22,934 INFO L131 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2023-09-01 09:53:22,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 633 events. 355/633 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2777 event pairs, 61 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 2076. Up to 267 conditions per place. [2023-09-01 09:53:22,937 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 27 selfloop transitions, 13 changer transitions 30/70 dead transitions. [2023-09-01 09:53:22,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 472 flow [2023-09-01 09:53:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:53:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:53:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2023-09-01 09:53:22,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-09-01 09:53:22,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2023-09-01 09:53:22,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2023-09-01 09:53:22,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:22,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2023-09-01 09:53:22,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 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 09:53:22,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 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 09:53:22,941 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 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 09:53:22,941 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 198 flow. Second operand 6 states and 486 transitions. [2023-09-01 09:53:22,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 472 flow [2023-09-01 09:53:22,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:53:22,944 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 246 flow [2023-09-01 09:53:22,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-09-01 09:53:22,944 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-09-01 09:53:22,944 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 246 flow [2023-09-01 09:53:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 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 09:53:22,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:22,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:22,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:53:22,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:22,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1611175819, now seen corresponding path program 3 times [2023-09-01 09:53:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747474299] [2023-09-01 09:53:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:23,549 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 09:53:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747474299] [2023-09-01 09:53:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747474299] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:53:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772867396] [2023-09-01 09:53:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:53:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:53:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:53:23,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-09-01 09:53:23,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 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 09:53:23,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:23,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-09-01 09:53:23,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:23,890 INFO L130 PetriNetUnfolder]: 225/454 cut-off events. [2023-09-01 09:53:23,891 INFO L131 PetriNetUnfolder]: For 1209/1209 co-relation queries the response was YES. [2023-09-01 09:53:23,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 454 events. 225/454 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2037 event pairs, 35 based on Foata normal form. 9/463 useless extension candidates. Maximal degree in co-relation 1843. Up to 242 conditions per place. [2023-09-01 09:53:23,893 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 45 selfloop transitions, 27 changer transitions 17/89 dead transitions. [2023-09-01 09:53:23,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 739 flow [2023-09-01 09:53:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 09:53:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 09:53:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 997 transitions. [2023-09-01 09:53:23,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44330813694975546 [2023-09-01 09:53:23,896 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 997 transitions. [2023-09-01 09:53:23,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 997 transitions. [2023-09-01 09:53:23,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:23,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 997 transitions. [2023-09-01 09:53:23,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.6923076923077) internal successors, (997), 13 states have internal predecessors, (997), 0 states have call successors, (0), 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 09:53:23,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 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 09:53:23,901 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 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 09:53:23,901 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 246 flow. Second operand 13 states and 997 transitions. [2023-09-01 09:53:23,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 739 flow [2023-09-01 09:53:23,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 669 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-09-01 09:53:23,906 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 442 flow [2023-09-01 09:53:23,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=442, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-09-01 09:53:23,907 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-09-01 09:53:23,907 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 442 flow [2023-09-01 09:53:23,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 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 09:53:23,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:23,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:23,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:53:23,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:23,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168937, now seen corresponding path program 4 times [2023-09-01 09:53:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:23,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312652426] [2023-09-01 09:53:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:23,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:24,353 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 09:53:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312652426] [2023-09-01 09:53:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312652426] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:24,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:24,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:53:24,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336953251] [2023-09-01 09:53:24,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:24,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:24,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:24,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:24,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:24,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2023-09-01 09:53:24,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 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 09:53:24,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:24,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2023-09-01 09:53:24,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:24,515 INFO L130 PetriNetUnfolder]: 223/442 cut-off events. [2023-09-01 09:53:24,515 INFO L131 PetriNetUnfolder]: For 1509/1509 co-relation queries the response was YES. [2023-09-01 09:53:24,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 442 events. 223/442 cut-off events. For 1509/1509 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1933 event pairs, 32 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 1977. Up to 268 conditions per place. [2023-09-01 09:53:24,518 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 24 changer transitions 2/64 dead transitions. [2023-09-01 09:53:24,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 657 flow [2023-09-01 09:53:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-09-01 09:53:24,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461271676300578 [2023-09-01 09:53:24,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-09-01 09:53:24,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-09-01 09:53:24,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:24,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-09-01 09:53:24,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:24,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 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 09:53:24,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 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 09:53:24,523 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 442 flow. Second operand 5 states and 399 transitions. [2023-09-01 09:53:24,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 657 flow [2023-09-01 09:53:24,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 613 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:24,529 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 556 flow [2023-09-01 09:53:24,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-09-01 09:53:24,531 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-09-01 09:53:24,531 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 556 flow [2023-09-01 09:53:24,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 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 09:53:24,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:24,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:53:24,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:24,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -607369889, now seen corresponding path program 5 times [2023-09-01 09:53:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055143940] [2023-09-01 09:53:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:24,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:25,193 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 09:53:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:25,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055143940] [2023-09-01 09:53:25,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055143940] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:25,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:25,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:53:25,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649605528] [2023-09-01 09:53:25,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:53:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:53:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:53:25,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-09-01 09:53:25,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 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 09:53:25,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:25,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-09-01 09:53:25,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:25,437 INFO L130 PetriNetUnfolder]: 253/497 cut-off events. [2023-09-01 09:53:25,438 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2023-09-01 09:53:25,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 497 events. 253/497 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2278 event pairs, 57 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 2301. Up to 254 conditions per place. [2023-09-01 09:53:25,441 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 55 selfloop transitions, 33 changer transitions 3/91 dead transitions. [2023-09-01 09:53:25,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 991 flow [2023-09-01 09:53:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:53:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:53:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2023-09-01 09:53:25,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45303468208092484 [2023-09-01 09:53:25,443 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2023-09-01 09:53:25,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2023-09-01 09:53:25,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:25,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2023-09-01 09:53:25,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 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 09:53:25,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 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 09:53:25,447 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 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 09:53:25,447 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 556 flow. Second operand 8 states and 627 transitions. [2023-09-01 09:53:25,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 991 flow [2023-09-01 09:53:25,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 977 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:25,454 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 796 flow [2023-09-01 09:53:25,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-09-01 09:53:25,455 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-09-01 09:53:25,455 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 796 flow [2023-09-01 09:53:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 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 09:53:25,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:25,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:25,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:53:25,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:25,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -264639987, now seen corresponding path program 6 times [2023-09-01 09:53:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382808952] [2023-09-01 09:53:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:26,284 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 09:53:26,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382808952] [2023-09-01 09:53:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382808952] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:26,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:53:26,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863489889] [2023-09-01 09:53:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:26,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:53:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:53:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:53:26,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-09-01 09:53:26,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 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 09:53:26,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:26,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-09-01 09:53:26,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:26,688 INFO L130 PetriNetUnfolder]: 249/492 cut-off events. [2023-09-01 09:53:26,688 INFO L131 PetriNetUnfolder]: For 2676/2676 co-relation queries the response was YES. [2023-09-01 09:53:26,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 492 events. 249/492 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2253 event pairs, 63 based on Foata normal form. 5/497 useless extension candidates. Maximal degree in co-relation 2482. Up to 259 conditions per place. [2023-09-01 09:53:26,691 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 64 selfloop transitions, 29 changer transitions 2/95 dead transitions. [2023-09-01 09:53:26,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 1145 flow [2023-09-01 09:53:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:53:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:53:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 705 transitions. [2023-09-01 09:53:26,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-09-01 09:53:26,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 705 transitions. [2023-09-01 09:53:26,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 705 transitions. [2023-09-01 09:53:26,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:26,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 705 transitions. [2023-09-01 09:53:26,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:53:26,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 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 09:53:26,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 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 09:53:26,697 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 796 flow. Second operand 9 states and 705 transitions. [2023-09-01 09:53:26,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 1145 flow [2023-09-01 09:53:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 1115 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-09-01 09:53:26,709 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 910 flow [2023-09-01 09:53:26,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-09-01 09:53:26,710 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-09-01 09:53:26,710 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 910 flow [2023-09-01 09:53:26,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 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 09:53:26,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:26,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:26,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:53:26,711 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:26,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2118468119, now seen corresponding path program 1 times [2023-09-01 09:53:26,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906360686] [2023-09-01 09:53:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:27,370 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 09:53:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906360686] [2023-09-01 09:53:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906360686] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:27,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:53:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424113471] [2023-09-01 09:53:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:27,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:53:27,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:53:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:53:27,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-09-01 09:53:27,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 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 09:53:27,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:27,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-09-01 09:53:27,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:27,689 INFO L130 PetriNetUnfolder]: 252/504 cut-off events. [2023-09-01 09:53:27,690 INFO L131 PetriNetUnfolder]: For 3538/3538 co-relation queries the response was YES. [2023-09-01 09:53:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 504 events. 252/504 cut-off events. For 3538/3538 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2328 event pairs, 48 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 2698. Up to 292 conditions per place. [2023-09-01 09:53:27,693 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 30 changer transitions 10/98 dead transitions. [2023-09-01 09:53:27,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 1233 flow [2023-09-01 09:53:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:53:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:53:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2023-09-01 09:53:27,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45407835581245987 [2023-09-01 09:53:27,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2023-09-01 09:53:27,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2023-09-01 09:53:27,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:27,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2023-09-01 09:53:27,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 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 09:53:27,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 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 09:53:27,700 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 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 09:53:27,700 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 910 flow. Second operand 9 states and 707 transitions. [2023-09-01 09:53:27,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 1233 flow [2023-09-01 09:53:27,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 98 transitions, 1161 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-09-01 09:53:27,711 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 917 flow [2023-09-01 09:53:27,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-09-01 09:53:27,711 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-09-01 09:53:27,711 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 917 flow [2023-09-01 09:53:27,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 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 09:53:27,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:27,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:27,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:53:27,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:27,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash -518458967, now seen corresponding path program 2 times [2023-09-01 09:53:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320215942] [2023-09-01 09:53:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:27,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:28,553 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 09:53:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320215942] [2023-09-01 09:53:28,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320215942] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:28,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:28,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 09:53:28,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097353658] [2023-09-01 09:53:28,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:28,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 09:53:28,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 09:53:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 09:53:28,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-09-01 09:53:28,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 0 states have call successors, (0), 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 09:53:28,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:28,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-09-01 09:53:28,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:29,053 INFO L130 PetriNetUnfolder]: 284/573 cut-off events. [2023-09-01 09:53:29,053 INFO L131 PetriNetUnfolder]: For 3932/3932 co-relation queries the response was YES. [2023-09-01 09:53:29,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 573 events. 284/573 cut-off events. For 3932/3932 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2792 event pairs, 39 based on Foata normal form. 6/579 useless extension candidates. Maximal degree in co-relation 3089. Up to 348 conditions per place. [2023-09-01 09:53:29,057 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 60 selfloop transitions, 19 changer transitions 48/127 dead transitions. [2023-09-01 09:53:29,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 127 transitions, 1619 flow [2023-09-01 09:53:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 09:53:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 09:53:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 844 transitions. [2023-09-01 09:53:29,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40655105973025046 [2023-09-01 09:53:29,059 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 844 transitions. [2023-09-01 09:53:29,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 844 transitions. [2023-09-01 09:53:29,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:29,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 844 transitions. [2023-09-01 09:53:29,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.33333333333333) internal successors, (844), 12 states have internal predecessors, (844), 0 states have call successors, (0), 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 09:53:29,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 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 09:53:29,064 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 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 09:53:29,064 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 917 flow. Second operand 12 states and 844 transitions. [2023-09-01 09:53:29,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 127 transitions, 1619 flow [2023-09-01 09:53:29,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 1567 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 09:53:29,087 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 910 flow [2023-09-01 09:53:29,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=910, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2023-09-01 09:53:29,088 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-09-01 09:53:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 910 flow [2023-09-01 09:53:29,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 0 states have call successors, (0), 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 09:53:29,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:29,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:29,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 09:53:29,089 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:29,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1506747961, now seen corresponding path program 3 times [2023-09-01 09:53:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:29,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56233513] [2023-09-01 09:53:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:29,965 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 09:53:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56233513] [2023-09-01 09:53:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56233513] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:29,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:29,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:53:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403127632] [2023-09-01 09:53:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:29,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:53:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:53:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:53:30,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-09-01 09:53:30,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 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 09:53:30,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:30,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-09-01 09:53:30,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:30,203 INFO L130 PetriNetUnfolder]: 179/370 cut-off events. [2023-09-01 09:53:30,204 INFO L131 PetriNetUnfolder]: For 3139/3139 co-relation queries the response was YES. [2023-09-01 09:53:30,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 370 events. 179/370 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1563 event pairs, 29 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 2302. Up to 269 conditions per place. [2023-09-01 09:53:30,208 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 49 selfloop transitions, 22 changer transitions 13/84 dead transitions. [2023-09-01 09:53:30,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 1172 flow [2023-09-01 09:53:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-09-01 09:53:30,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45334434351775393 [2023-09-01 09:53:30,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-09-01 09:53:30,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-09-01 09:53:30,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:30,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-09-01 09:53:30,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 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 09:53:30,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 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 09:53:30,215 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 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 09:53:30,215 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 910 flow. Second operand 7 states and 549 transitions. [2023-09-01 09:53:30,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 1172 flow [2023-09-01 09:53:30,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 1085 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-09-01 09:53:30,230 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 803 flow [2023-09-01 09:53:30,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=803, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-09-01 09:53:30,232 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2023-09-01 09:53:30,232 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 803 flow [2023-09-01 09:53:30,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 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 09:53:30,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:30,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:30,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 09:53:30,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:30,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash 385804551, now seen corresponding path program 4 times [2023-09-01 09:53:30,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:30,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756546519] [2023-09-01 09:53:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:30,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:31,161 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 09:53:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756546519] [2023-09-01 09:53:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756546519] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:31,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:53:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494217880] [2023-09-01 09:53:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:31,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:53:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:31,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:53:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:53:31,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2023-09-01 09:53:31,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 74.55555555555556) internal successors, (671), 9 states have internal predecessors, (671), 0 states have call successors, (0), 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 09:53:31,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:31,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2023-09-01 09:53:31,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:31,552 INFO L130 PetriNetUnfolder]: 191/395 cut-off events. [2023-09-01 09:53:31,552 INFO L131 PetriNetUnfolder]: For 3040/3040 co-relation queries the response was YES. [2023-09-01 09:53:31,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 395 events. 191/395 cut-off events. For 3040/3040 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1696 event pairs, 23 based on Foata normal form. 10/405 useless extension candidates. Maximal degree in co-relation 2205. Up to 117 conditions per place. [2023-09-01 09:53:31,554 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 48 selfloop transitions, 12 changer transitions 41/101 dead transitions. [2023-09-01 09:53:31,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1237 flow [2023-09-01 09:53:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 09:53:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 09:53:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 942 transitions. [2023-09-01 09:53:31,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45375722543352603 [2023-09-01 09:53:31,558 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 942 transitions. [2023-09-01 09:53:31,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 942 transitions. [2023-09-01 09:53:31,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:31,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 942 transitions. [2023-09-01 09:53:31,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.5) internal successors, (942), 12 states have internal predecessors, (942), 0 states have call successors, (0), 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 09:53:31,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 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 09:53:31,563 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 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 09:53:31,563 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 803 flow. Second operand 12 states and 942 transitions. [2023-09-01 09:53:31,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1237 flow [2023-09-01 09:53:31,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1146 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 09:53:31,570 INFO L231 Difference]: Finished difference. Result has 90 places, 43 transitions, 515 flow [2023-09-01 09:53:31,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=90, PETRI_TRANSITIONS=43} [2023-09-01 09:53:31,570 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-09-01 09:53:31,571 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 43 transitions, 515 flow [2023-09-01 09:53:31,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.55555555555556) internal successors, (671), 9 states have internal predecessors, (671), 0 states have call successors, (0), 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 09:53:31,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:31,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:31,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 09:53:31,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:31,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1893787813, now seen corresponding path program 1 times [2023-09-01 09:53:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:31,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45405853] [2023-09-01 09:53:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:31,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:31,999 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 09:53:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45405853] [2023-09-01 09:53:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45405853] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:32,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:32,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:53:32,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513225627] [2023-09-01 09:53:32,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:32,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:53:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:53:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:53:32,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-09-01 09:53:32,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 43 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 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 09:53:32,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:32,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-09-01 09:53:32,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:32,164 INFO L130 PetriNetUnfolder]: 76/183 cut-off events. [2023-09-01 09:53:32,164 INFO L131 PetriNetUnfolder]: For 2068/2068 co-relation queries the response was YES. [2023-09-01 09:53:32,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 183 events. 76/183 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 626 event pairs, 27 based on Foata normal form. 10/193 useless extension candidates. Maximal degree in co-relation 1047. Up to 92 conditions per place. [2023-09-01 09:53:32,166 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 30 selfloop transitions, 10 changer transitions 18/58 dead transitions. [2023-09-01 09:53:32,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 775 flow [2023-09-01 09:53:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2023-09-01 09:53:32,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44178364987613544 [2023-09-01 09:53:32,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2023-09-01 09:53:32,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2023-09-01 09:53:32,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:32,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2023-09-01 09:53:32,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 0 states have call successors, (0), 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 09:53:32,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 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 09:53:32,170 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 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 09:53:32,170 INFO L175 Difference]: Start difference. First operand has 90 places, 43 transitions, 515 flow. Second operand 7 states and 535 transitions. [2023-09-01 09:53:32,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 775 flow [2023-09-01 09:53:32,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 604 flow, removed 53 selfloop flow, removed 23 redundant places. [2023-09-01 09:53:32,174 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 367 flow [2023-09-01 09:53:32,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2023-09-01 09:53:32,175 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-09-01 09:53:32,175 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 367 flow [2023-09-01 09:53:32,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 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 09:53:32,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:32,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:32,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 09:53:32,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 09:53:32,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash -916025961, now seen corresponding path program 2 times [2023-09-01 09:53:32,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:32,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278854557] [2023-09-01 09:53:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:32,534 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 09:53:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278854557] [2023-09-01 09:53:32,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278854557] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:32,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:32,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:53:32,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526878504] [2023-09-01 09:53:32,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:32,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:53:32,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:53:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:53:32,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-09-01 09:53:32,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 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 09:53:32,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:32,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-09-01 09:53:32,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:32,663 INFO L130 PetriNetUnfolder]: 39/104 cut-off events. [2023-09-01 09:53:32,663 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-09-01 09:53:32,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 104 events. 39/104 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 270 event pairs, 15 based on Foata normal form. 10/114 useless extension candidates. Maximal degree in co-relation 481. Up to 32 conditions per place. [2023-09-01 09:53:32,664 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-09-01 09:53:32,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 425 flow [2023-09-01 09:53:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2023-09-01 09:53:32,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435177539223782 [2023-09-01 09:53:32,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2023-09-01 09:53:32,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2023-09-01 09:53:32,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:32,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2023-09-01 09:53:32,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 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 09:53:32,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 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 09:53:32,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 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 09:53:32,668 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 367 flow. Second operand 7 states and 527 transitions. [2023-09-01 09:53:32,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 425 flow [2023-09-01 09:53:32,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 40 transitions, 355 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-09-01 09:53:32,670 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-09-01 09:53:32,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-09-01 09:53:32,671 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-09-01 09:53:32,671 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-09-01 09:53:32,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 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 09:53:32,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 09:53:32,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-09-01 09:53:32,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-09-01 09:53:32,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-09-01 09:53:32,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-09-01 09:53:32,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 09:53:32,674 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 2, 1, 1, 1, 1] [2023-09-01 09:53:32,677 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:53:32,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:53:32,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:53:32 BasicIcfg [2023-09-01 09:53:32,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:53:32,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:53:32,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:53:32,680 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:53:32,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:15" (3/4) ... [2023-09-01 09:53:32,682 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:53:32,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:53:32,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:53:32,689 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-09-01 09:53:32,689 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-09-01 09:53:32,690 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 09:53:32,690 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:53:32,716 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:53:32,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:53:32,717 INFO L158 Benchmark]: Toolchain (without parser) took 18615.86ms. Allocated memory was 86.0MB in the beginning and 419.4MB in the end (delta: 333.4MB). Free memory was 64.1MB in the beginning and 256.6MB in the end (delta: -192.5MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,717 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:53:32,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.96ms. Allocated memory is still 86.0MB. Free memory was 63.9MB in the beginning and 58.5MB in the end (delta: 5.4MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.00ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 55.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,718 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 86.0MB. Free memory was 55.1MB in the beginning and 53.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,718 INFO L158 Benchmark]: RCFGBuilder took 565.66ms. Allocated memory is still 86.0MB. Free memory was 53.0MB in the beginning and 34.7MB in the end (delta: 18.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,718 INFO L158 Benchmark]: TraceAbstraction took 17472.48ms. Allocated memory was 86.0MB in the beginning and 419.4MB in the end (delta: 333.4MB). Free memory was 34.1MB in the beginning and 259.8MB in the end (delta: -225.7MB). Peak memory consumption was 106.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,719 INFO L158 Benchmark]: Witness Printer took 36.89ms. Allocated memory is still 419.4MB. Free memory was 259.8MB in the beginning and 256.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:32,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.96ms. Allocated memory is still 86.0MB. Free memory was 63.9MB in the beginning and 58.5MB in the end (delta: 5.4MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.00ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 55.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 86.0MB. Free memory was 55.1MB in the beginning and 53.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 565.66ms. Allocated memory is still 86.0MB. Free memory was 53.0MB in the beginning and 34.7MB in the end (delta: 18.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * TraceAbstraction took 17472.48ms. Allocated memory was 86.0MB in the beginning and 419.4MB in the end (delta: 333.4MB). Free memory was 34.1MB in the beginning and 259.8MB in the end (delta: -225.7MB). Peak memory consumption was 106.2MB. Max. memory is 16.1GB. * Witness Printer took 36.89ms. Allocated memory is still 419.4MB. Free memory was 259.8MB in the beginning and 256.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 95 PlacesBefore, 26 PlacesAfterwards, 90 TransitionsBefore, 19 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3453 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1492, independent: 1333, independent conditional: 0, independent unconditional: 1333, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 682, independent: 644, independent conditional: 0, independent unconditional: 644, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1492, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.4s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 853 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 671 mSDsluCounter, 950 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 861 mSDsCounter, 462 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2487 IncrementalHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 462 mSolverCounterUnsat, 89 mSDtfsCounter, 2487 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=917occurred in iteration=11, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 3111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:53:32,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE