./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.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/rfi003_tso.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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --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 09:53:22,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:53:22,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:53:22,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:53:22,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:53:22,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:53:22,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:53:22,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:53:22,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:53:22,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:53:22,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:53:22,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:53:22,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:53:22,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:53:22,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:53:22,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:53:22,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:53:22,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:53:22,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:53:22,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:53:22,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:53:22,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:53:22,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:53:22,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:53:22,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:53:22,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:53:22,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:53:22,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:53:22,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:53:22,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:53:22,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:53:22,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:53:22,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:53:22,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:53:22,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:53:22,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:53:22,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:53:22,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:53:22,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:53:22,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:53:22,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:53:22,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:53:22,752 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:53:22,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:53:22,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:53:22,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:53:22,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:53:22,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:53:22,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:53:22,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:53:22,755 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:53:22,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:53:22,755 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:53:22,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:53:22,757 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:53:22,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:53:22,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:53:22,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:53:22,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:53:22,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:22,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:53:22,758 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:53:22,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:53:22,759 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:53:22,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:53:22,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:53:23,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:53:23,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:53:23,003 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:53:23,008 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:53:23,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-09-01 09:53:24,045 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:53:24,274 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:53:24,275 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-09-01 09:53:24,290 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61d0f46c/abfe07261a6d4fc8ab52c21d789c9edd/FLAG89941948d [2023-09-01 09:53:24,300 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61d0f46c/abfe07261a6d4fc8ab52c21d789c9edd [2023-09-01 09:53:24,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:53:24,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:53:24,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:24,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:53:24,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:53:24,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b48772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24, skipping insertion in model container [2023-09-01 09:53:24,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:53:24,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:53:24,433 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/rfi003_tso.i[944,957] [2023-09-01 09:53:24,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:24,609 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:53:24,627 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/rfi003_tso.i[944,957] [2023-09-01 09:53:24,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:24,703 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:24,704 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:24,709 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:53:24,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24 WrapperNode [2023-09-01 09:53:24,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:24,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:24,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:53:24,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:53:24,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,760 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-09-01 09:53:24,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:24,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:53:24,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:53:24,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:53:24,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:53:24,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:53:24,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:53:24,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:53:24,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (1/1) ... [2023-09-01 09:53:24,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:53:24,855 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 09:53:24,886 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 09:53:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:53:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:53:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:53:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:53:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:53:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:53:24,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:53:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:53:24,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:53:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:53:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:53:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:53:24,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:53:24,898 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 09:53:25,042 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:53:25,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:53:25,326 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:53:25,468 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:53:25,469 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:53:25,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:25 BoogieIcfgContainer [2023-09-01 09:53:25,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:53:25,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:53:25,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:53:25,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:53:25,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:53:24" (1/3) ... [2023-09-01 09:53:25,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ee790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:25, skipping insertion in model container [2023-09-01 09:53:25,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:24" (2/3) ... [2023-09-01 09:53:25,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ee790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:25, skipping insertion in model container [2023-09-01 09:53:25,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:25" (3/3) ... [2023-09-01 09:53:25,477 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-09-01 09:53:25,483 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:53:25,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:53:25,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 09:53:25,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:53:25,548 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:53:25,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-09-01 09:53:25,638 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-09-01 09:53:25,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:25,643 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 50 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 09:53:25,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-09-01 09:53:25,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:25,650 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:53:25,668 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:25,670 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:25,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-09-01 09:53:25,684 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-09-01 09:53:25,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:25,687 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 50 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 09:53:25,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-09-01 09:53:28,039 INFO L134 LiptonReduction]: Checked pairs total: 4348 [2023-09-01 09:53:28,039 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-09-01 09:53:28,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:53:28,052 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;@6242caae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:53:28,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 09:53:28,065 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-09-01 09:53:28,065 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:28,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:28,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 09:53:28,072 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 09:53:28,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:28,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1568998742, now seen corresponding path program 1 times [2023-09-01 09:53:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737180994] [2023-09-01 09:53:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:28,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:28,515 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 09:53:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737180994] [2023-09-01 09:53:28,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737180994] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:28,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:28,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:53:28,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97820414] [2023-09-01 09:53:28,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:28,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:53:28,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:53:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:53:28,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2023-09-01 09:53:28,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 52 flow. Second operand has 3 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 09:53:28,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:28,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2023-09-01 09:53:28,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:28,721 INFO L130 PetriNetUnfolder]: 380/639 cut-off events. [2023-09-01 09:53:28,721 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 09:53:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 639 events. 380/639 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2634 event pairs, 90 based on Foata normal form. 35/601 useless extension candidates. Maximal degree in co-relation 1281. Up to 466 conditions per place. [2023-09-01 09:53:28,728 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 24 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2023-09-01 09:53:28,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 128 flow [2023-09-01 09:53:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-09-01 09:53:28,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207100591715976 [2023-09-01 09:53:28,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-09-01 09:53:28,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-09-01 09:53:28,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:28,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-09-01 09:53:28,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 09:53:28,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 09:53:28,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 09:53:28,753 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 52 flow. Second operand 3 states and 264 transitions. [2023-09-01 09:53:28,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 128 flow [2023-09-01 09:53:28,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:28,756 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-09-01 09:53:28,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-09-01 09:53:28,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-09-01 09:53:28,763 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-09-01 09:53:28,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 09:53:28,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:28,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:28,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:53:28,766 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 09:53:28,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash 275037612, now seen corresponding path program 1 times [2023-09-01 09:53:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485776750] [2023-09-01 09:53:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:29,429 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 09:53:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:29,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485776750] [2023-09-01 09:53:29,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485776750] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:29,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:29,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:53:29,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775886347] [2023-09-01 09:53:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:29,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:29,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 169 [2023-09-01 09:53:29,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 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 09:53:29,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:29,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 169 [2023-09-01 09:53:29,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:29,629 INFO L130 PetriNetUnfolder]: 305/534 cut-off events. [2023-09-01 09:53:29,629 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 09:53:29,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 534 events. 305/534 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2015 event pairs, 110 based on Foata normal form. 42/576 useless extension candidates. Maximal degree in co-relation 1100. Up to 305 conditions per place. [2023-09-01 09:53:29,632 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 24 selfloop transitions, 2 changer transitions 17/43 dead transitions. [2023-09-01 09:53:29,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 182 flow [2023-09-01 09:53:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2023-09-01 09:53:29,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378698224852071 [2023-09-01 09:53:29,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2023-09-01 09:53:29,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2023-09-01 09:53:29,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:29,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2023-09-01 09:53:29,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 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 09:53:29,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:29,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:29,638 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 5 states and 370 transitions. [2023-09-01 09:53:29,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 182 flow [2023-09-01 09:53:29,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:29,640 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 54 flow [2023-09-01 09:53:29,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-09-01 09:53:29,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-09-01 09:53:29,641 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 54 flow [2023-09-01 09:53:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 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 09:53:29,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:29,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:29,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:53:29,642 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 09:53:29,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1915642280, now seen corresponding path program 1 times [2023-09-01 09:53:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:29,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754102618] [2023-09-01 09:53:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:30,227 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 09:53:30,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:30,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754102618] [2023-09-01 09:53:30,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754102618] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:30,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:30,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:53:30,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920783716] [2023-09-01 09:53:30,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:30,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:30,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 169 [2023-09-01 09:53:30,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 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 09:53:30,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:30,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 169 [2023-09-01 09:53:30,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:30,400 INFO L130 PetriNetUnfolder]: 256/455 cut-off events. [2023-09-01 09:53:30,400 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-09-01 09:53:30,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 455 events. 256/455 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1630 event pairs, 125 based on Foata normal form. 24/479 useless extension candidates. Maximal degree in co-relation 1014. Up to 226 conditions per place. [2023-09-01 09:53:30,402 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 24 selfloop transitions, 2 changer transitions 14/40 dead transitions. [2023-09-01 09:53:30,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 178 flow [2023-09-01 09:53:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-09-01 09:53:30,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43431952662721895 [2023-09-01 09:53:30,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-09-01 09:53:30,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-09-01 09:53:30,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:30,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-09-01 09:53:30,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:53:30,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:30,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:30,406 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 54 flow. Second operand 5 states and 367 transitions. [2023-09-01 09:53:30,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 178 flow [2023-09-01 09:53:30,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 170 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 09:53:30,407 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 58 flow [2023-09-01 09:53:30,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2023-09-01 09:53:30,408 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-09-01 09:53:30,408 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 58 flow [2023-09-01 09:53:30,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 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 09:53:30,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:30,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:30,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:53:30,408 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 09:53:30,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash -744690788, now seen corresponding path program 1 times [2023-09-01 09:53:30,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:30,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306688505] [2023-09-01 09:53:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:30,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:31,089 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 09:53:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306688505] [2023-09-01 09:53:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306688505] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669261650] [2023-09-01 09:53:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:31,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 169 [2023-09-01 09:53:31,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 58 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 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 09:53:31,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:31,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 169 [2023-09-01 09:53:31,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:31,262 INFO L130 PetriNetUnfolder]: 196/369 cut-off events. [2023-09-01 09:53:31,263 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-09-01 09:53:31,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 369 events. 196/369 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1399 event pairs, 80 based on Foata normal form. 15/384 useless extension candidates. Maximal degree in co-relation 833. Up to 307 conditions per place. [2023-09-01 09:53:31,264 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 27 selfloop transitions, 7 changer transitions 9/44 dead transitions. [2023-09-01 09:53:31,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 204 flow [2023-09-01 09:53:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-09-01 09:53:31,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44040574809805577 [2023-09-01 09:53:31,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-09-01 09:53:31,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-09-01 09:53:31,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:31,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-09-01 09:53:31,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 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 09:53:31,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 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 09:53:31,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 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 09:53:31,282 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 58 flow. Second operand 7 states and 521 transitions. [2023-09-01 09:53:31,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 204 flow [2023-09-01 09:53:31,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 187 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-09-01 09:53:31,283 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 98 flow [2023-09-01 09:53:31,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-09-01 09:53:31,284 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-09-01 09:53:31,284 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 98 flow [2023-09-01 09:53:31,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 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 09:53:31,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:31,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:31,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:53:31,285 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 09:53:31,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1570032139, now seen corresponding path program 1 times [2023-09-01 09:53:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438485793] [2023-09-01 09:53:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:31,538 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 09:53:31,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438485793] [2023-09-01 09:53:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438485793] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:31,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:31,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:53:31,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507171126] [2023-09-01 09:53:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:31,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:53:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:53:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:53:31,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-09-01 09:53:31,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 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 09:53:31,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:31,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-09-01 09:53:31,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:31,633 INFO L130 PetriNetUnfolder]: 111/231 cut-off events. [2023-09-01 09:53:31,633 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-09-01 09:53:31,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 231 events. 111/231 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 822 event pairs, 53 based on Foata normal form. 35/264 useless extension candidates. Maximal degree in co-relation 593. Up to 116 conditions per place. [2023-09-01 09:53:31,635 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 42 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2023-09-01 09:53:31,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-09-01 09:53:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:53:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:53:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2023-09-01 09:53:31,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49556213017751477 [2023-09-01 09:53:31,636 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 335 transitions. [2023-09-01 09:53:31,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 335 transitions. [2023-09-01 09:53:31,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:31,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 335 transitions. [2023-09-01 09:53:31,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 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 09:53:31,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 09:53:31,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 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 09:53:31,638 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 98 flow. Second operand 4 states and 335 transitions. [2023-09-01 09:53:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-09-01 09:53:31,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 260 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 09:53:31,640 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 122 flow [2023-09-01 09:53:31,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-09-01 09:53:31,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-09-01 09:53:31,641 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 122 flow [2023-09-01 09:53:31,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 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 09:53:31,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:31,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:31,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:53:31,642 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 09:53:31,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash 995260082, now seen corresponding path program 1 times [2023-09-01 09:53:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514169464] [2023-09-01 09:53:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:32,459 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 09:53:32,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:32,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514169464] [2023-09-01 09:53:32,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514169464] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:32,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:32,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:32,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000184931] [2023-09-01 09:53:32,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:32,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:32,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 169 [2023-09-01 09:53:32,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 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 09:53:32,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:32,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 169 [2023-09-01 09:53:32,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:32,629 INFO L130 PetriNetUnfolder]: 62/152 cut-off events. [2023-09-01 09:53:32,629 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-09-01 09:53:32,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 152 events. 62/152 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 471 event pairs, 36 based on Foata normal form. 5/157 useless extension candidates. Maximal degree in co-relation 464. Up to 131 conditions per place. [2023-09-01 09:53:32,630 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 26 selfloop transitions, 8 changer transitions 5/40 dead transitions. [2023-09-01 09:53:32,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 250 flow [2023-09-01 09:53:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 506 transitions. [2023-09-01 09:53:32,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42772612003381233 [2023-09-01 09:53:32,632 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 506 transitions. [2023-09-01 09:53:32,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 506 transitions. [2023-09-01 09:53:32,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:32,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 506 transitions. [2023-09-01 09:53:32,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 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 09:53:32,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 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 09:53:32,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 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 09:53:32,635 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 122 flow. Second operand 7 states and 506 transitions. [2023-09-01 09:53:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 250 flow [2023-09-01 09:53:32,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 238 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:32,637 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 153 flow [2023-09-01 09:53:32,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-09-01 09:53:32,637 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-09-01 09:53:32,638 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 153 flow [2023-09-01 09:53:32,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 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 09:53:32,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:32,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:32,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:53:32,639 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 09:53:32,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:32,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2104896819, now seen corresponding path program 1 times [2023-09-01 09:53:32,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:32,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131429041] [2023-09-01 09:53:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:33,852 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 09:53:33,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131429041] [2023-09-01 09:53:33,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131429041] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:33,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:33,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 09:53:33,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272848204] [2023-09-01 09:53:33,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:33,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 09:53:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:33,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 09:53:33,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 09:53:33,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 169 [2023-09-01 09:53:33,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 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 09:53:33,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:33,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 169 [2023-09-01 09:53:33,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:34,179 INFO L130 PetriNetUnfolder]: 79/189 cut-off events. [2023-09-01 09:53:34,180 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-09-01 09:53:34,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 189 events. 79/189 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 688 event pairs, 26 based on Foata normal form. 5/193 useless extension candidates. Maximal degree in co-relation 591. Up to 106 conditions per place. [2023-09-01 09:53:34,181 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 31 selfloop transitions, 11 changer transitions 14/57 dead transitions. [2023-09-01 09:53:34,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 363 flow [2023-09-01 09:53:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:53:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:53:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2023-09-01 09:53:34,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266929651545036 [2023-09-01 09:53:34,183 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2023-09-01 09:53:34,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2023-09-01 09:53:34,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:34,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2023-09-01 09:53:34,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 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 09:53:34,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 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 09:53:34,186 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 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 09:53:34,186 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 153 flow. Second operand 9 states and 649 transitions. [2023-09-01 09:53:34,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 363 flow [2023-09-01 09:53:34,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 349 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 09:53:34,188 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 202 flow [2023-09-01 09:53:34,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2023-09-01 09:53:34,189 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2023-09-01 09:53:34,189 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 202 flow [2023-09-01 09:53:34,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 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 09:53:34,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:34,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:34,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:53:34,190 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 09:53:34,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash 783084069, now seen corresponding path program 2 times [2023-09-01 09:53:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:34,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877966855] [2023-09-01 09:53:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:34,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:34,426 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 09:53:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877966855] [2023-09-01 09:53:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877966855] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:53:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753396737] [2023-09-01 09:53:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:34,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:34,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-09-01 09:53:34,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 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 09:53:34,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:34,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-09-01 09:53:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:34,509 INFO L130 PetriNetUnfolder]: 43/110 cut-off events. [2023-09-01 09:53:34,509 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-09-01 09:53:34,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 110 events. 43/110 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 322 event pairs, 13 based on Foata normal form. 11/120 useless extension candidates. Maximal degree in co-relation 377. Up to 59 conditions per place. [2023-09-01 09:53:34,510 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 39 selfloop transitions, 6 changer transitions 1/47 dead transitions. [2023-09-01 09:53:34,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 344 flow [2023-09-01 09:53:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2023-09-01 09:53:34,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710059171597633 [2023-09-01 09:53:34,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2023-09-01 09:53:34,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2023-09-01 09:53:34,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:34,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2023-09-01 09:53:34,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 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 09:53:34,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:34,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:34,514 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 202 flow. Second operand 5 states and 398 transitions. [2023-09-01 09:53:34,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 344 flow [2023-09-01 09:53:34,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 312 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-09-01 09:53:34,516 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 197 flow [2023-09-01 09:53:34,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-09-01 09:53:34,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-09-01 09:53:34,517 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 197 flow [2023-09-01 09:53:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 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 09:53:34,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:34,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:34,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:53:34,518 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 09:53:34,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1536431698, now seen corresponding path program 1 times [2023-09-01 09:53:34,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:34,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977061907] [2023-09-01 09:53:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:34,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:36,584 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 09:53:36,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:36,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977061907] [2023-09-01 09:53:36,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977061907] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:36,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:36,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 09:53:36,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177382213] [2023-09-01 09:53:36,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 09:53:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 09:53:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-09-01 09:53:36,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 169 [2023-09-01 09:53:36,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 197 flow. Second operand has 11 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 0 states have call successors, (0), 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 09:53:36,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:36,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 169 [2023-09-01 09:53:36,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:36,905 INFO L130 PetriNetUnfolder]: 43/123 cut-off events. [2023-09-01 09:53:36,905 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 09:53:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 123 events. 43/123 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 392 event pairs, 3 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 433. Up to 55 conditions per place. [2023-09-01 09:53:36,906 INFO L137 encePairwiseOnDemand]: 159/169 looper letters, 28 selfloop transitions, 20 changer transitions 10/59 dead transitions. [2023-09-01 09:53:36,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 435 flow [2023-09-01 09:53:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:53:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:53:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 624 transitions. [2023-09-01 09:53:36,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-09-01 09:53:36,908 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 624 transitions. [2023-09-01 09:53:36,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 624 transitions. [2023-09-01 09:53:36,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:36,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 624 transitions. [2023-09-01 09:53:36,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 0 states have call successors, (0), 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 09:53:36,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 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 09:53:36,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 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 09:53:36,913 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 197 flow. Second operand 9 states and 624 transitions. [2023-09-01 09:53:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 435 flow [2023-09-01 09:53:36,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 362 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-09-01 09:53:36,915 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 270 flow [2023-09-01 09:53:36,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-09-01 09:53:36,916 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-09-01 09:53:36,916 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 270 flow [2023-09-01 09:53:36,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 0 states have call successors, (0), 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 09:53:36,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:36,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:36,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:53:36,918 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 09:53:36,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash 152097626, now seen corresponding path program 2 times [2023-09-01 09:53:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:36,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973618436] [2023-09-01 09:53:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:36,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:37,115 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 09:53:37,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:37,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973618436] [2023-09-01 09:53:37,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973618436] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:37,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:37,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:53:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035347800] [2023-09-01 09:53:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:37,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:37,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 169 [2023-09-01 09:53:37,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 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 09:53:37,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:37,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 169 [2023-09-01 09:53:37,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:37,205 INFO L130 PetriNetUnfolder]: 52/139 cut-off events. [2023-09-01 09:53:37,205 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2023-09-01 09:53:37,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 139 events. 52/139 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 454 event pairs, 9 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 530. Up to 68 conditions per place. [2023-09-01 09:53:37,206 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 26 selfloop transitions, 1 changer transitions 39/66 dead transitions. [2023-09-01 09:53:37,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 532 flow [2023-09-01 09:53:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2023-09-01 09:53:37,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532544378698225 [2023-09-01 09:53:37,207 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2023-09-01 09:53:37,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2023-09-01 09:53:37,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:37,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2023-09-01 09:53:37,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:37,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:37,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 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 09:53:37,210 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 270 flow. Second operand 5 states and 383 transitions. [2023-09-01 09:53:37,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 532 flow [2023-09-01 09:53:37,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 469 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-09-01 09:53:37,213 INFO L231 Difference]: Finished difference. Result has 58 places, 27 transitions, 129 flow [2023-09-01 09:53:37,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=58, PETRI_TRANSITIONS=27} [2023-09-01 09:53:37,214 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-09-01 09:53:37,214 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 27 transitions, 129 flow [2023-09-01 09:53:37,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 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 09:53:37,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:37,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:37,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:53:37,215 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 09:53:37,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash 319043860, now seen corresponding path program 3 times [2023-09-01 09:53:37,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:37,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725547522] [2023-09-01 09:53:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:38,298 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 09:53:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725547522] [2023-09-01 09:53:38,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725547522] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:38,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:38,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:53:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533407572] [2023-09-01 09:53:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:38,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:53:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:53:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:53:38,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 169 [2023-09-01 09:53:38,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 27 transitions, 129 flow. Second operand has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 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 09:53:38,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:38,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 169 [2023-09-01 09:53:38,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:38,520 INFO L130 PetriNetUnfolder]: 15/65 cut-off events. [2023-09-01 09:53:38,520 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-09-01 09:53:38,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 65 events. 15/65 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 8 based on Foata normal form. 1/66 useless extension candidates. Maximal degree in co-relation 215. Up to 20 conditions per place. [2023-09-01 09:53:38,521 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 15 selfloop transitions, 5 changer transitions 15/36 dead transitions. [2023-09-01 09:53:38,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 36 transitions, 233 flow [2023-09-01 09:53:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:53:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:53:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 574 transitions. [2023-09-01 09:53:38,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245562130177515 [2023-09-01 09:53:38,524 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 574 transitions. [2023-09-01 09:53:38,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 574 transitions. [2023-09-01 09:53:38,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:38,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 574 transitions. [2023-09-01 09:53:38,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 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 09:53:38,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,527 INFO L175 Difference]: Start difference. First operand has 58 places, 27 transitions, 129 flow. Second operand 8 states and 574 transitions. [2023-09-01 09:53:38,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 36 transitions, 233 flow [2023-09-01 09:53:38,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 201 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-09-01 09:53:38,528 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 94 flow [2023-09-01 09:53:38,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2023-09-01 09:53:38,529 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-09-01 09:53:38,529 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 94 flow [2023-09-01 09:53:38,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 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 09:53:38,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:38,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:38,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:53:38,530 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 09:53:38,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash -189233210, now seen corresponding path program 4 times [2023-09-01 09:53:38,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:38,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831568516] [2023-09-01 09:53:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:38,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:41,100 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 09:53:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:41,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831568516] [2023-09-01 09:53:41,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831568516] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:41,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:41,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 09:53:41,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142417653] [2023-09-01 09:53:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:41,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 09:53:41,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 09:53:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 09:53:41,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 169 [2023-09-01 09:53:41,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 94 flow. Second operand has 12 states, 12 states have (on average 64.5) internal successors, (774), 12 states have internal predecessors, (774), 0 states have call successors, (0), 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 09:53:41,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:41,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 169 [2023-09-01 09:53:41,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:41,658 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-09-01 09:53:41,659 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 09:53:41,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 40 events. 8/40 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 127. Up to 15 conditions per place. [2023-09-01 09:53:41,659 INFO L137 encePairwiseOnDemand]: 159/169 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-09-01 09:53:41,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 24 transitions, 149 flow [2023-09-01 09:53:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 09:53:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 09:53:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 652 transitions. [2023-09-01 09:53:41,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857988165680473 [2023-09-01 09:53:41,661 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 652 transitions. [2023-09-01 09:53:41,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 652 transitions. [2023-09-01 09:53:41,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:41,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 652 transitions. [2023-09-01 09:53:41,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.2) internal successors, (652), 10 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 09:53:41,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 169.0) internal successors, (1859), 11 states have internal predecessors, (1859), 0 states have call successors, (0), 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 09:53:41,666 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 169.0) internal successors, (1859), 11 states have internal predecessors, (1859), 0 states have call successors, (0), 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 09:53:41,667 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 94 flow. Second operand 10 states and 652 transitions. [2023-09-01 09:53:41,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 24 transitions, 149 flow [2023-09-01 09:53:41,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 24 transitions, 127 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-09-01 09:53:41,668 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-09-01 09:53:41,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-09-01 09:53:41,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-09-01 09:53:41,669 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-09-01 09:53:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.5) internal successors, (774), 12 states have internal predecessors, (774), 0 states have call successors, (0), 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 09:53:41,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 09:53:41,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-09-01 09:53:41,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-09-01 09:53:41,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-09-01 09:53:41,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-09-01 09:53:41,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 09:53:41,686 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:41,690 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:53:41,690 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:53:41,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:53:41 BasicIcfg [2023-09-01 09:53:41,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:53:41,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:53:41,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:53:41,696 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:53:41,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:25" (3/4) ... [2023-09-01 09:53:41,698 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:53:41,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:53:41,716 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:53:41,722 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-09-01 09:53:41,722 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-09-01 09:53:41,722 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:53:41,722 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:53:41,754 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:53:41,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:53:41,754 INFO L158 Benchmark]: Toolchain (without parser) took 17451.67ms. Allocated memory was 65.0MB in the beginning and 553.6MB in the end (delta: 488.6MB). Free memory was 40.2MB in the beginning and 216.1MB in the end (delta: -175.9MB). Peak memory consumption was 311.9MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,755 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:53:41,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.22ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 40.0MB in the beginning and 58.0MB in the end (delta: -18.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.98ms. Allocated memory is still 88.1MB. Free memory was 58.0MB in the beginning and 54.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,755 INFO L158 Benchmark]: Boogie Preprocessor took 45.27ms. Allocated memory is still 88.1MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,756 INFO L158 Benchmark]: RCFGBuilder took 664.17ms. Allocated memory is still 88.1MB. Free memory was 52.8MB in the beginning and 49.7MB in the end (delta: 3.1MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,756 INFO L158 Benchmark]: TraceAbstraction took 16222.98ms. Allocated memory was 88.1MB in the beginning and 553.6MB in the end (delta: 465.6MB). Free memory was 49.3MB in the beginning and 219.2MB in the end (delta: -169.9MB). Peak memory consumption was 294.0MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,756 INFO L158 Benchmark]: Witness Printer took 58.58ms. Allocated memory is still 553.6MB. Free memory was 219.2MB in the beginning and 216.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.22ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 40.0MB in the beginning and 58.0MB in the end (delta: -18.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.98ms. Allocated memory is still 88.1MB. Free memory was 58.0MB in the beginning and 54.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.27ms. Allocated memory is still 88.1MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 664.17ms. Allocated memory is still 88.1MB. Free memory was 52.8MB in the beginning and 49.7MB in the end (delta: 3.1MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * TraceAbstraction took 16222.98ms. Allocated memory was 88.1MB in the beginning and 553.6MB in the end (delta: 465.6MB). Free memory was 49.3MB in the beginning and 219.2MB in the end (delta: -169.9MB). Peak memory consumption was 294.0MB. Max. memory is 16.1GB. * Witness Printer took 58.58ms. Allocated memory is still 553.6MB. Free memory was 219.2MB in the beginning and 216.1MB 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: 2.4s, 95 PlacesBefore, 29 PlacesAfterwards, 90 TransitionsBefore, 23 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 4348 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1805, independent: 1601, independent conditional: 0, independent unconditional: 1601, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 681, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1805, independent: 949, independent conditional: 0, independent unconditional: 949, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 681, unknown conditional: 0, unknown unconditional: 681] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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: 16.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 529 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 420 mSDsluCounter, 705 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1957 IncrementalHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 50 mSDtfsCounter, 1957 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=9, InterpolantAutomatonStates: 77, 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, 10.1s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 3033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 09:53:41,783 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