./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/rfi000_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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:16:26,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:16:26,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:16:26,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:16:26,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:16:26,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:16:26,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:16:26,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:16:26,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:16:26,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:16:26,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:16:26,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:16:26,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:16:26,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:16:26,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:16:26,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:16:26,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:16:26,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:16:26,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:16:26,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:16:26,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:16:26,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:16:26,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:16:26,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:16:26,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:16:26,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:16:26,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:16:26,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:16:26,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:16:26,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:16:26,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:16:26,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:16:26,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:16:26,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:16:26,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:16:26,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:16:26,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:16:26,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:16:26,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:16:26,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:16:26,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:16:26,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:16:26,757 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:16:26,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:16:26,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:16:26,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:16:26,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:16:26,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:16:26,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:16:26,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:16:26,761 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:16:26,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:16:26,762 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:16:26,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:16:26,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:16:26,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:16:26,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:16:26,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:16:26,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:16:26,763 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:16:26,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:16:26,764 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:16:26,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:16:26,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:16:26,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:16:26,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:16:26,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:16:26,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:16:26,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:16:26,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:16:26,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:16:26,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:16:26,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:16:26,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:16:26,766 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:16:26,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:16:26,767 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:16:26,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:16:27,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:16:27,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:16:27,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:16:27,065 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:16:27,066 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:16:27,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-30 23:16:28,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:16:28,567 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:16:28,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-30 23:16:28,580 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2efe9cdf/647ee3a7f1824f4baa31e93d69f1ae31/FLAG0aac2ca3b [2023-08-30 23:16:28,856 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2efe9cdf/647ee3a7f1824f4baa31e93d69f1ae31 [2023-08-30 23:16:28,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:16:28,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:16:28,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:16:28,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:16:28,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:16:28,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:16:28" (1/1) ... [2023-08-30 23:16:28,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e58720b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:28, skipping insertion in model container [2023-08-30 23:16:28,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:16:28" (1/1) ... [2023-08-30 23:16:28,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:16:28,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:16:29,053 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/rfi000_tso.i[944,957] [2023-08-30 23:16:29,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:16:29,288 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:16:29,300 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/rfi000_tso.i[944,957] [2023-08-30 23:16:29,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:16:29,421 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:16:29,421 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:16:29,427 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:16:29,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29 WrapperNode [2023-08-30 23:16:29,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:16:29,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:16:29,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:16:29,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:16:29,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,507 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-30 23:16:29,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:16:29,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:16:29,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:16:29,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:16:29,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:16:29,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:16:29,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:16:29,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:16:29,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (1/1) ... [2023-08-30 23:16:29,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:16:29,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:16:29,609 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) [2023-08-30 23:16:29,631 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 [2023-08-30 23:16:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:16:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:16:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:16:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:16:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:16:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:16:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:16:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:16:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:16:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:16:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:16:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:16:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:16:29,649 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:16:29,772 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:16:29,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:16:30,107 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:16:30,247 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:16:30,248 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:16:30,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:30 BoogieIcfgContainer [2023-08-30 23:16:30,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:16:30,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:16:30,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:16:30,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:16:30,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:16:28" (1/3) ... [2023-08-30 23:16:30,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210261d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:16:30, skipping insertion in model container [2023-08-30 23:16:30,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:29" (2/3) ... [2023-08-30 23:16:30,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210261d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:16:30, skipping insertion in model container [2023-08-30 23:16:30,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:30" (3/3) ... [2023-08-30 23:16:30,257 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-08-30 23:16:30,264 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:16:30,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:16:30,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:16:30,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:16:30,318 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:16:30,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 190 flow [2023-08-30 23:16:30,381 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-30 23:16:30,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:30,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-30 23:16:30,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 90 transitions, 190 flow [2023-08-30 23:16:30,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 88 transitions, 182 flow [2023-08-30 23:16:30,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:16:30,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 88 transitions, 182 flow [2023-08-30 23:16:30,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 88 transitions, 182 flow [2023-08-30 23:16:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 88 transitions, 182 flow [2023-08-30 23:16:30,425 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-30 23:16:30,425 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:30,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-30 23:16:30,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 1156 [2023-08-30 23:16:33,268 INFO L134 LiptonReduction]: Checked pairs total: 3494 [2023-08-30 23:16:33,271 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-30 23:16:33,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:16:33,299 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;@70eeef7e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:16:33,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 23:16:33,309 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 23:16:33,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:33,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:33,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:16:33,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:16:33,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1153820224, now seen corresponding path program 1 times [2023-08-30 23:16:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732663521] [2023-08-30 23:16:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:33,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:33,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732663521] [2023-08-30 23:16:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732663521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:33,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:33,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:16:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911557376] [2023-08-30 23:16:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:16:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:16:33,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:16:33,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 166 [2023-08-30 23:16:33,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:33,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:33,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 166 [2023-08-30 23:16:33,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:33,999 INFO L130 PetriNetUnfolder]: 294/501 cut-off events. [2023-08-30 23:16:34,000 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 23:16:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 501 events. 294/501 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2036 event pairs, 69 based on Foata normal form. 28/472 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2023-08-30 23:16:34,004 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 22 selfloop transitions, 2 changer transitions 4/29 dead transitions. [2023-08-30 23:16:34,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 120 flow [2023-08-30 23:16:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:16:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:16:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-08-30 23:16:34,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200803212851406 [2023-08-30 23:16:34,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-08-30 23:16:34,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-08-30 23:16:34,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:34,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-08-30 23:16:34,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:34,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:34,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:34,029 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 3 states and 259 transitions. [2023-08-30 23:16:34,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 120 flow [2023-08-30 23:16:34,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:34,033 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-30 23:16:34,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-30 23:16:34,037 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 23:16:34,037 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-30 23:16:34,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:34,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:34,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:34,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:16:34,039 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)] === [2023-08-30 23:16:34,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 721288587, now seen corresponding path program 1 times [2023-08-30 23:16:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:34,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868584323] [2023-08-30 23:16:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:34,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:35,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868584323] [2023-08-30 23:16:35,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868584323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:35,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:35,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:35,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107103802] [2023-08-30 23:16:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:35,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:35,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:35,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 23:16:35,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:35,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:35,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 23:16:35,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:35,624 INFO L130 PetriNetUnfolder]: 337/591 cut-off events. [2023-08-30 23:16:35,625 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 23:16:35,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 591 events. 337/591 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2397 event pairs, 100 based on Foata normal form. 41/632 useless extension candidates. Maximal degree in co-relation 1224. Up to 439 conditions per place. [2023-08-30 23:16:35,629 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 27 selfloop transitions, 10 changer transitions 22/59 dead transitions. [2023-08-30 23:16:35,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 59 transitions, 254 flow [2023-08-30 23:16:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:16:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:16:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2023-08-30 23:16:35,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2023-08-30 23:16:35,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2023-08-30 23:16:35,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2023-08-30 23:16:35,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:35,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2023-08-30 23:16:35,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:35,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:35,640 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:35,640 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 7 states and 524 transitions. [2023-08-30 23:16:35,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 59 transitions, 254 flow [2023-08-30 23:16:35,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 59 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:35,643 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 117 flow [2023-08-30 23:16:35,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=117, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-30 23:16:35,644 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-30 23:16:35,645 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 117 flow [2023-08-30 23:16:35,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:35,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:35,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:35,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:16:35,646 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)] === [2023-08-30 23:16:35,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:35,646 INFO L85 PathProgramCache]: Analyzing trace with hash 885095490, now seen corresponding path program 1 times [2023-08-30 23:16:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:35,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156378235] [2023-08-30 23:16:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156378235] [2023-08-30 23:16:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156378235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:36,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905812383] [2023-08-30 23:16:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:36,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:36,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 23:16:36,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:36,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:36,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 23:16:36,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:36,800 INFO L130 PetriNetUnfolder]: 271/481 cut-off events. [2023-08-30 23:16:36,800 INFO L131 PetriNetUnfolder]: For 424/424 co-relation queries the response was YES. [2023-08-30 23:16:36,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 481 events. 271/481 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1814 event pairs, 89 based on Foata normal form. 39/520 useless extension candidates. Maximal degree in co-relation 1506. Up to 229 conditions per place. [2023-08-30 23:16:36,804 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 30 selfloop transitions, 7 changer transitions 21/58 dead transitions. [2023-08-30 23:16:36,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 365 flow [2023-08-30 23:16:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:16:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:16:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2023-08-30 23:16:36,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414802065404475 [2023-08-30 23:16:36,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2023-08-30 23:16:36,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2023-08-30 23:16:36,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:36,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2023-08-30 23:16:36,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:36,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:36,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:36,812 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 117 flow. Second operand 7 states and 513 transitions. [2023-08-30 23:16:36,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 365 flow [2023-08-30 23:16:36,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 58 transitions, 357 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:36,816 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 174 flow [2023-08-30 23:16:36,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-30 23:16:36,817 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2023-08-30 23:16:36,817 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 174 flow [2023-08-30 23:16:36,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:36,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:36,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:36,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:16:36,818 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)] === [2023-08-30 23:16:36,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:36,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1532632972, now seen corresponding path program 1 times [2023-08-30 23:16:36,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:36,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255630781] [2023-08-30 23:16:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:36,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:38,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255630781] [2023-08-30 23:16:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255630781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:16:38,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708781025] [2023-08-30 23:16:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:38,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:16:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:38,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:16:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:16:38,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 23:16:38,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:38,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 23:16:38,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:38,275 INFO L130 PetriNetUnfolder]: 211/387 cut-off events. [2023-08-30 23:16:38,276 INFO L131 PetriNetUnfolder]: For 597/618 co-relation queries the response was YES. [2023-08-30 23:16:38,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 387 events. 211/387 cut-off events. For 597/618 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1446 event pairs, 48 based on Foata normal form. 32/415 useless extension candidates. Maximal degree in co-relation 1369. Up to 318 conditions per place. [2023-08-30 23:16:38,279 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 36 selfloop transitions, 9 changer transitions 10/58 dead transitions. [2023-08-30 23:16:38,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 403 flow [2023-08-30 23:16:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:16:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:16:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 598 transitions. [2023-08-30 23:16:38,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503012048192771 [2023-08-30 23:16:38,282 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 598 transitions. [2023-08-30 23:16:38,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 598 transitions. [2023-08-30 23:16:38,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:38,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 598 transitions. [2023-08-30 23:16:38,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,287 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 174 flow. Second operand 8 states and 598 transitions. [2023-08-30 23:16:38,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 403 flow [2023-08-30 23:16:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 385 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 23:16:38,293 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 239 flow [2023-08-30 23:16:38,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-08-30 23:16:38,294 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2023-08-30 23:16:38,294 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 239 flow [2023-08-30 23:16:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:38,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:38,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:16:38,295 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)] === [2023-08-30 23:16:38,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash 848568254, now seen corresponding path program 1 times [2023-08-30 23:16:38,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:38,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967562894] [2023-08-30 23:16:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:38,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967562894] [2023-08-30 23:16:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967562894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:38,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:38,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:16:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507762191] [2023-08-30 23:16:38,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:38,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:16:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:38,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:16:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:16:38,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 166 [2023-08-30 23:16:38,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:38,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 166 [2023-08-30 23:16:38,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:38,683 INFO L130 PetriNetUnfolder]: 66/153 cut-off events. [2023-08-30 23:16:38,683 INFO L131 PetriNetUnfolder]: For 235/244 co-relation queries the response was YES. [2023-08-30 23:16:38,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 153 events. 66/153 cut-off events. For 235/244 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 9 based on Foata normal form. 30/181 useless extension candidates. Maximal degree in co-relation 591. Up to 94 conditions per place. [2023-08-30 23:16:38,685 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 42 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-30 23:16:38,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 388 flow [2023-08-30 23:16:38,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:16:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:16:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-30 23:16:38,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040160642570282 [2023-08-30 23:16:38,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-30 23:16:38,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-30 23:16:38,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:38,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-30 23:16:38,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,689 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 239 flow. Second operand 3 states and 251 transitions. [2023-08-30 23:16:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 388 flow [2023-08-30 23:16:38,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 364 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 23:16:38,692 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 229 flow [2023-08-30 23:16:38,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-30 23:16:38,693 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-30 23:16:38,694 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 229 flow [2023-08-30 23:16:38,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:38,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:38,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:38,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:16:38,695 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)] === [2023-08-30 23:16:38,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:38,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1010908484, now seen corresponding path program 1 times [2023-08-30 23:16:38,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:38,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901030942] [2023-08-30 23:16:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901030942] [2023-08-30 23:16:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901030942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:40,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:40,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:16:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102005915] [2023-08-30 23:16:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:16:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:16:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:16:40,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 23:16:40,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 229 flow. Second operand has 9 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:40,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:40,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 23:16:40,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:40,657 INFO L130 PetriNetUnfolder]: 66/159 cut-off events. [2023-08-30 23:16:40,657 INFO L131 PetriNetUnfolder]: For 171/178 co-relation queries the response was YES. [2023-08-30 23:16:40,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 159 events. 66/159 cut-off events. For 171/178 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 493 event pairs, 21 based on Foata normal form. 11/170 useless extension candidates. Maximal degree in co-relation 626. Up to 124 conditions per place. [2023-08-30 23:16:40,659 INFO L137 encePairwiseOnDemand]: 157/166 looper letters, 33 selfloop transitions, 16 changer transitions 4/56 dead transitions. [2023-08-30 23:16:40,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 426 flow [2023-08-30 23:16:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 23:16:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 23:16:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2023-08-30 23:16:40,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44216867469879517 [2023-08-30 23:16:40,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2023-08-30 23:16:40,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2023-08-30 23:16:40,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:40,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2023-08-30 23:16:40,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:40,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:40,668 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:40,668 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 229 flow. Second operand 10 states and 734 transitions. [2023-08-30 23:16:40,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 426 flow [2023-08-30 23:16:40,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:40,671 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 321 flow [2023-08-30 23:16:40,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-30 23:16:40,672 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-08-30 23:16:40,672 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 321 flow [2023-08-30 23:16:40,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:40,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:40,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:40,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:16:40,675 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)] === [2023-08-30 23:16:40,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 36994820, now seen corresponding path program 1 times [2023-08-30 23:16:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:40,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414550257] [2023-08-30 23:16:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:41,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414550257] [2023-08-30 23:16:41,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414550257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:41,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:41,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:16:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366790406] [2023-08-30 23:16:41,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:41,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:16:41,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:16:41,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:16:41,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 23:16:41,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 321 flow. Second operand has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:41,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:41,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 23:16:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:42,166 INFO L130 PetriNetUnfolder]: 98/236 cut-off events. [2023-08-30 23:16:42,167 INFO L131 PetriNetUnfolder]: For 481/494 co-relation queries the response was YES. [2023-08-30 23:16:42,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 236 events. 98/236 cut-off events. For 481/494 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 931 event pairs, 15 based on Foata normal form. 18/254 useless extension candidates. Maximal degree in co-relation 1042. Up to 118 conditions per place. [2023-08-30 23:16:42,169 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 49 selfloop transitions, 15 changer transitions 14/81 dead transitions. [2023-08-30 23:16:42,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 721 flow [2023-08-30 23:16:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:16:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:16:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2023-08-30 23:16:42,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44653614457831325 [2023-08-30 23:16:42,171 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 593 transitions. [2023-08-30 23:16:42,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 593 transitions. [2023-08-30 23:16:42,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:42,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 593 transitions. [2023-08-30 23:16:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.125) internal successors, (593), 8 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:42,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:42,176 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:42,176 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 321 flow. Second operand 8 states and 593 transitions. [2023-08-30 23:16:42,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 721 flow [2023-08-30 23:16:42,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 677 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-30 23:16:42,181 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 390 flow [2023-08-30 23:16:42,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-30 23:16:42,181 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2023-08-30 23:16:42,182 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 390 flow [2023-08-30 23:16:42,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:42,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:42,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:42,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:16:42,183 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)] === [2023-08-30 23:16:42,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1634806898, now seen corresponding path program 2 times [2023-08-30 23:16:42,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:42,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097753890] [2023-08-30 23:16:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:42,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:44,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097753890] [2023-08-30 23:16:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097753890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:16:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096303367] [2023-08-30 23:16:44,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:44,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:16:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:16:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:16:44,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 23:16:44,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:44,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:44,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 23:16:44,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:44,757 INFO L130 PetriNetUnfolder]: 127/311 cut-off events. [2023-08-30 23:16:44,757 INFO L131 PetriNetUnfolder]: For 901/921 co-relation queries the response was YES. [2023-08-30 23:16:44,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 311 events. 127/311 cut-off events. For 901/921 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1427 event pairs, 31 based on Foata normal form. 24/334 useless extension candidates. Maximal degree in co-relation 1461. Up to 162 conditions per place. [2023-08-30 23:16:44,760 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 50 selfloop transitions, 24 changer transitions 14/91 dead transitions. [2023-08-30 23:16:44,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 865 flow [2023-08-30 23:16:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:16:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:16:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 678 transitions. [2023-08-30 23:16:44,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538152610441767 [2023-08-30 23:16:44,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 678 transitions. [2023-08-30 23:16:44,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 678 transitions. [2023-08-30 23:16:44,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:44,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 678 transitions. [2023-08-30 23:16:44,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.33333333333333) internal successors, (678), 9 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:44,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:44,768 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:44,769 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 390 flow. Second operand 9 states and 678 transitions. [2023-08-30 23:16:44,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 865 flow [2023-08-30 23:16:44,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 833 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:44,775 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 530 flow [2023-08-30 23:16:44,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-08-30 23:16:44,775 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-08-30 23:16:44,775 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 530 flow [2023-08-30 23:16:44,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:44,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:44,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:44,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:16:44,777 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)] === [2023-08-30 23:16:44,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash 964595912, now seen corresponding path program 3 times [2023-08-30 23:16:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001696075] [2023-08-30 23:16:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:44,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:44,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001696075] [2023-08-30 23:16:44,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001696075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:44,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:44,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:44,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104726948] [2023-08-30 23:16:44,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:44,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:16:44,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:16:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:16:45,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 166 [2023-08-30 23:16:45,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:45,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:45,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 166 [2023-08-30 23:16:45,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:45,087 INFO L130 PetriNetUnfolder]: 55/157 cut-off events. [2023-08-30 23:16:45,087 INFO L131 PetriNetUnfolder]: For 601/609 co-relation queries the response was YES. [2023-08-30 23:16:45,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 157 events. 55/157 cut-off events. For 601/609 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 625 event pairs, 6 based on Foata normal form. 32/188 useless extension candidates. Maximal degree in co-relation 834. Up to 82 conditions per place. [2023-08-30 23:16:45,089 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 50 selfloop transitions, 5 changer transitions 11/69 dead transitions. [2023-08-30 23:16:45,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 784 flow [2023-08-30 23:16:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 23:16:45,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894578313253012 [2023-08-30 23:16:45,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 23:16:45,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 23:16:45,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:45,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 23:16:45,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:45,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:45,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:45,096 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 530 flow. Second operand 4 states and 325 transitions. [2023-08-30 23:16:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 784 flow [2023-08-30 23:16:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 674 flow, removed 35 selfloop flow, removed 7 redundant places. [2023-08-30 23:16:45,101 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 353 flow [2023-08-30 23:16:45,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-08-30 23:16:45,102 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2023-08-30 23:16:45,103 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 353 flow [2023-08-30 23:16:45,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:45,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:45,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:45,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:16:45,104 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)] === [2023-08-30 23:16:45,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash 741524624, now seen corresponding path program 1 times [2023-08-30 23:16:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706478454] [2023-08-30 23:16:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:47,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:47,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706478454] [2023-08-30 23:16:47,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706478454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:47,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:16:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112083574] [2023-08-30 23:16:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:47,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:16:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:16:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:16:47,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 23:16:47,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 353 flow. Second operand has 11 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:47,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:47,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 23:16:47,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:48,002 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-08-30 23:16:48,002 INFO L131 PetriNetUnfolder]: For 293/299 co-relation queries the response was YES. [2023-08-30 23:16:48,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 103 events. 33/103 cut-off events. For 293/299 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 303 event pairs, 1 based on Foata normal form. 7/110 useless extension candidates. Maximal degree in co-relation 481. Up to 44 conditions per place. [2023-08-30 23:16:48,003 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 31 selfloop transitions, 9 changer transitions 17/60 dead transitions. [2023-08-30 23:16:48,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 559 flow [2023-08-30 23:16:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:16:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:16:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 652 transitions. [2023-08-30 23:16:48,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364123159303882 [2023-08-30 23:16:48,006 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 652 transitions. [2023-08-30 23:16:48,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 652 transitions. [2023-08-30 23:16:48,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:48,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 652 transitions. [2023-08-30 23:16:48,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:48,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:48,011 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:48,011 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 353 flow. Second operand 9 states and 652 transitions. [2023-08-30 23:16:48,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 559 flow [2023-08-30 23:16:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 480 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-30 23:16:48,015 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 279 flow [2023-08-30 23:16:48,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=279, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2023-08-30 23:16:48,016 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2023-08-30 23:16:48,016 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 279 flow [2023-08-30 23:16:48,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:48,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:48,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:48,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:16:48,017 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)] === [2023-08-30 23:16:48,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1303551252, now seen corresponding path program 2 times [2023-08-30 23:16:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:48,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426958918] [2023-08-30 23:16:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:50,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:50,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426958918] [2023-08-30 23:16:50,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426958918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:50,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:50,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:16:50,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721635942] [2023-08-30 23:16:50,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:50,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:16:50,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:16:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:16:50,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-30 23:16:50,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 279 flow. Second operand has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:50,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:50,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-30 23:16:50,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:50,534 INFO L130 PetriNetUnfolder]: 23/83 cut-off events. [2023-08-30 23:16:50,534 INFO L131 PetriNetUnfolder]: For 177/180 co-relation queries the response was YES. [2023-08-30 23:16:50,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 83 events. 23/83 cut-off events. For 177/180 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 2 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 363. Up to 43 conditions per place. [2023-08-30 23:16:50,535 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 28 selfloop transitions, 2 changer transitions 21/53 dead transitions. [2023-08-30 23:16:50,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 53 transitions, 449 flow [2023-08-30 23:16:50,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:16:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:16:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 554 transitions. [2023-08-30 23:16:50,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171686746987952 [2023-08-30 23:16:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 554 transitions. [2023-08-30 23:16:50,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 554 transitions. [2023-08-30 23:16:50,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:50,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 554 transitions. [2023-08-30 23:16:50,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:50,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:50,542 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:50,542 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 279 flow. Second operand 8 states and 554 transitions. [2023-08-30 23:16:50,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 53 transitions, 449 flow [2023-08-30 23:16:50,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 389 flow, removed 6 selfloop flow, removed 15 redundant places. [2023-08-30 23:16:50,546 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 190 flow [2023-08-30 23:16:50,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2023-08-30 23:16:50,547 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2023-08-30 23:16:50,547 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 190 flow [2023-08-30 23:16:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:50,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:50,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:50,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:16:50,548 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)] === [2023-08-30 23:16:50,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -291110304, now seen corresponding path program 3 times [2023-08-30 23:16:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:50,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272171647] [2023-08-30 23:16:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:50,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:51,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272171647] [2023-08-30 23:16:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272171647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:51,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:16:51,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128885873] [2023-08-30 23:16:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:51,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:51,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 23:16:51,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:51,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:51,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 23:16:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:51,290 INFO L130 PetriNetUnfolder]: 16/52 cut-off events. [2023-08-30 23:16:51,291 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 23:16:51,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 52 events. 16/52 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 4 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 224. Up to 33 conditions per place. [2023-08-30 23:16:51,291 INFO L137 encePairwiseOnDemand]: 161/166 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 23:16:51,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 34 transitions, 276 flow [2023-08-30 23:16:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 352 transitions. [2023-08-30 23:16:51,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42409638554216866 [2023-08-30 23:16:51,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 352 transitions. [2023-08-30 23:16:51,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 352 transitions. [2023-08-30 23:16:51,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:51,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 352 transitions. [2023-08-30 23:16:51,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:51,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:51,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:51,295 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 190 flow. Second operand 5 states and 352 transitions. [2023-08-30 23:16:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 34 transitions, 276 flow [2023-08-30 23:16:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 240 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-30 23:16:51,297 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-30 23:16:51,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-30 23:16:51,298 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2023-08-30 23:16:51,298 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-30 23:16:51,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:51,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 23:16:51,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 23:16:51,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 23:16:51,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 23:16:51,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-30 23:16:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:16:51,303 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:51,307 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:16:51,307 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:16:51,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:16:51 BasicIcfg [2023-08-30 23:16:51,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:16:51,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:16:51,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:16:51,311 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:16:51,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:30" (3/4) ... [2023-08-30 23:16:51,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:16:51,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:16:51,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:16:51,323 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-08-30 23:16:51,323 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-30 23:16:51,324 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 23:16:51,324 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:16:51,360 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:16:51,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:16:51,361 INFO L158 Benchmark]: Toolchain (without parser) took 22502.25ms. Allocated memory was 90.2MB in the beginning and 371.2MB in the end (delta: 281.0MB). Free memory was 66.2MB in the beginning and 183.7MB in the end (delta: -117.5MB). Peak memory consumption was 165.9MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,361 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:16:51,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.16ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 62.8MB in the end (delta: 3.3MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.07ms. Allocated memory is still 90.2MB. Free memory was 62.8MB in the beginning and 59.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,362 INFO L158 Benchmark]: Boogie Preprocessor took 68.29ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 57.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,362 INFO L158 Benchmark]: RCFGBuilder took 672.27ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 38.7MB in the end (delta: 18.7MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,363 INFO L158 Benchmark]: TraceAbstraction took 21058.92ms. Allocated memory was 90.2MB in the beginning and 371.2MB in the end (delta: 281.0MB). Free memory was 37.7MB in the beginning and 185.8MB in the end (delta: -148.1MB). Peak memory consumption was 133.8MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,363 INFO L158 Benchmark]: Witness Printer took 49.60ms. Allocated memory is still 371.2MB. Free memory was 185.8MB in the beginning and 183.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:16:51,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.16ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 62.8MB in the end (delta: 3.3MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.07ms. Allocated memory is still 90.2MB. Free memory was 62.8MB in the beginning and 59.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.29ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 57.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 672.27ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 38.7MB in the end (delta: 18.7MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21058.92ms. Allocated memory was 90.2MB in the beginning and 371.2MB in the end (delta: 281.0MB). Free memory was 37.7MB in the beginning and 185.8MB in the end (delta: -148.1MB). Peak memory consumption was 133.8MB. Max. memory is 16.1GB. * Witness Printer took 49.60ms. Allocated memory is still 371.2MB. Free memory was 185.8MB in the beginning and 183.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 93 PlacesBefore, 28 PlacesAfterwards, 88 TransitionsBefore, 22 TransitionsAfterwards, 1156 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 3494 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1103, independent: 942, independent conditional: 0, independent unconditional: 942, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1103, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, 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, 110 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: 21.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 518 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 399 mSDsluCounter, 798 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 777 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2066 IncrementalHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 21 mSDtfsCounter, 2066 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=8, InterpolantAutomatonStates: 81, 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, 0.4s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 3275 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! [2023-08-30 23:16:51,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE