./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58dc011fd2a961d9f4b52b23fa43b2842c59061a7eec6829cf4a27698c4c4b05 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:09:13,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:09:13,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:09:13,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:09:13,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:09:13,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:09:13,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:09:13,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:09:13,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:09:13,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:09:13,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:09:13,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:09:13,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:09:13,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:09:13,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:09:13,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:09:13,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:09:13,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:09:13,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:09:13,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:09:13,420 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:09:13,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:09:13,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:09:13,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:09:13,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:09:13,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:09:13,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:09:13,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:09:13,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:09:13,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:09:13,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:09:13,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:09:13,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:09:13,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:09:13,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:09:13,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:09:13,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:09:13,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:09:13,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:09:13,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:09:13,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:09:13,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:09:13,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:09:13,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:09:13,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:09:13,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:09:13,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:09:13,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:09:13,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:09:13,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:09:13,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:09:13,453 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:09:13,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:09:13,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:09:13,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:09:13,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:09:13,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:09:13,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:09:13,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:09:13,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:09:13,455 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:09:13,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:09:13,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:09:13,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:09:13,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:09:13,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:09:13,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:09:13,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:09:13,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:09:13,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:09:13,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:09:13,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:09:13,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:09:13,458 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:09:13,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:09:13,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:09:13,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58dc011fd2a961d9f4b52b23fa43b2842c59061a7eec6829cf4a27698c4c4b05 [2022-07-12 10:09:13,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:09:13,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:09:13,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:09:13,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:09:13,688 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:09:13,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:13,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc6a0e9c/99991af55d8d4f1c9af0998352449799/FLAGa51d0cf23 [2022-07-12 10:09:14,178 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:09:14,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:14,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc6a0e9c/99991af55d8d4f1c9af0998352449799/FLAGa51d0cf23 [2022-07-12 10:09:14,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc6a0e9c/99991af55d8d4f1c9af0998352449799 [2022-07-12 10:09:14,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:09:14,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:09:14,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:09:14,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:09:14,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:09:14,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4afa6533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14, skipping insertion in model container [2022-07-12 10:09:14,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:09:14,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:09:14,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2022-07-12 10:09:14,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:09:14,603 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:09:14,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2022-07-12 10:09:14,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:09:14,672 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:09:14,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14 WrapperNode [2022-07-12 10:09:14,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:09:14,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:09:14,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:09:14,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:09:14,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,724 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-07-12 10:09:14,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:09:14,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:09:14,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:09:14,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:09:14,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:09:14,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:09:14,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:09:14,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:09:14,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (1/1) ... [2022-07-12 10:09:14,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:09:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:09:14,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:09:14,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:09:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:09:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:09:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:09:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:09:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:09:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:09:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:09:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:09:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:09:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:09:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:09:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:09:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:09:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:09:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:09:14,816 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:09:14,911 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:09:14,928 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:09:15,105 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:09:15,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:09:15,113 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:09:15,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:15 BoogieIcfgContainer [2022-07-12 10:09:15,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:09:15,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:09:15,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:09:15,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:09:15,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:09:14" (1/3) ... [2022-07-12 10:09:15,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fec3960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:09:15, skipping insertion in model container [2022-07-12 10:09:15,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:14" (2/3) ... [2022-07-12 10:09:15,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fec3960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:09:15, skipping insertion in model container [2022-07-12 10:09:15,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:15" (3/3) ... [2022-07-12 10:09:15,125 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:15,129 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:09:15,153 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:09:15,153 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:09:15,153 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:09:15,222 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:09:15,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-07-12 10:09:15,319 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2022-07-12 10:09:15,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:09:15,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-12 10:09:15,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-07-12 10:09:15,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-07-12 10:09:15,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:09:15,344 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4364c776, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62180ec5 [2022-07-12 10:09:15,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:09:15,364 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2022-07-12 10:09:15,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:09:15,364 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:15,365 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:15,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1681563862, now seen corresponding path program 1 times [2022-07-12 10:09:15,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:15,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441014379] [2022-07-12 10:09:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:15,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:15,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441014379] [2022-07-12 10:09:15,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441014379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:15,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:15,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459060798] [2022-07-12 10:09:15,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:15,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:15,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:15,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-12 10:09:15,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:15,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:15,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-12 10:09:15,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:16,078 INFO L129 PetriNetUnfolder]: 74/262 cut-off events. [2022-07-12 10:09:16,078 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:09:16,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 262 events. 74/262 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 979 event pairs, 2 based on Foata normal form. 10/263 useless extension candidates. Maximal degree in co-relation 387. Up to 56 conditions per place. [2022-07-12 10:09:16,083 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 17 selfloop transitions, 2 changer transitions 22/101 dead transitions. [2022-07-12 10:09:16,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 299 flow [2022-07-12 10:09:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2022-07-12 10:09:16,101 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2022-07-12 10:09:16,102 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2022-07-12 10:09:16,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2022-07-12 10:09:16,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:16,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2022-07-12 10:09:16,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,123 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 711 transitions. [2022-07-12 10:09:16,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 299 flow [2022-07-12 10:09:16,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:09:16,131 INFO L242 Difference]: Finished difference. Result has 97 places, 75 transitions, 176 flow [2022-07-12 10:09:16,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2022-07-12 10:09:16,137 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-07-12 10:09:16,138 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 176 flow [2022-07-12 10:09:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,139 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:16,139 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:09:16,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1200547319, now seen corresponding path program 1 times [2022-07-12 10:09:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557757194] [2022-07-12 10:09:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:16,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557757194] [2022-07-12 10:09:16,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557757194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:16,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:16,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445557142] [2022-07-12 10:09:16,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:16,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:16,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:16,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:16,299 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-12 10:09:16,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:16,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-12 10:09:16,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:16,423 INFO L129 PetriNetUnfolder]: 29/177 cut-off events. [2022-07-12 10:09:16,423 INFO L130 PetriNetUnfolder]: For 44/48 co-relation queries the response was YES. [2022-07-12 10:09:16,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 177 events. 29/177 cut-off events. For 44/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 513 event pairs, 6 based on Foata normal form. 4/174 useless extension candidates. Maximal degree in co-relation 299. Up to 24 conditions per place. [2022-07-12 10:09:16,425 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 14 selfloop transitions, 3 changer transitions 16/93 dead transitions. [2022-07-12 10:09:16,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 299 flow [2022-07-12 10:09:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 775 transitions. [2022-07-12 10:09:16,427 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-12 10:09:16,427 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 775 transitions. [2022-07-12 10:09:16,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 775 transitions. [2022-07-12 10:09:16,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:16,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 775 transitions. [2022-07-12 10:09:16,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,431 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,431 INFO L186 Difference]: Start difference. First operand has 97 places, 75 transitions, 176 flow. Second operand 10 states and 775 transitions. [2022-07-12 10:09:16,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 299 flow [2022-07-12 10:09:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 265 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-12 10:09:16,434 INFO L242 Difference]: Finished difference. Result has 99 places, 75 transitions, 182 flow [2022-07-12 10:09:16,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=99, PETRI_TRANSITIONS=75} [2022-07-12 10:09:16,435 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2022-07-12 10:09:16,435 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 182 flow [2022-07-12 10:09:16,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:16,436 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:16,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:09:16,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:16,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash 251008458, now seen corresponding path program 1 times [2022-07-12 10:09:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:16,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698837151] [2022-07-12 10:09:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:16,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698837151] [2022-07-12 10:09:16,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698837151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:16,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:16,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:16,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633658296] [2022-07-12 10:09:16,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:16,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:16,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:16,550 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-12 10:09:16,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 75 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:16,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-12 10:09:16,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:16,658 INFO L129 PetriNetUnfolder]: 13/155 cut-off events. [2022-07-12 10:09:16,659 INFO L130 PetriNetUnfolder]: For 31/39 co-relation queries the response was YES. [2022-07-12 10:09:16,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 155 events. 13/155 cut-off events. For 31/39 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 419 event pairs, 3 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 243. Up to 19 conditions per place. [2022-07-12 10:09:16,660 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 15 selfloop transitions, 3 changer transitions 10/88 dead transitions. [2022-07-12 10:09:16,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 88 transitions, 290 flow [2022-07-12 10:09:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 770 transitions. [2022-07-12 10:09:16,662 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8279569892473119 [2022-07-12 10:09:16,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 770 transitions. [2022-07-12 10:09:16,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 770 transitions. [2022-07-12 10:09:16,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:16,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 770 transitions. [2022-07-12 10:09:16,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,666 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,666 INFO L186 Difference]: Start difference. First operand has 99 places, 75 transitions, 182 flow. Second operand 10 states and 770 transitions. [2022-07-12 10:09:16,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 88 transitions, 290 flow [2022-07-12 10:09:16,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 254 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-07-12 10:09:16,669 INFO L242 Difference]: Finished difference. Result has 100 places, 75 transitions, 186 flow [2022-07-12 10:09:16,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=100, PETRI_TRANSITIONS=75} [2022-07-12 10:09:16,669 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 15 predicate places. [2022-07-12 10:09:16,670 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 75 transitions, 186 flow [2022-07-12 10:09:16,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,670 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:16,670 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:09:16,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:16,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1109782807, now seen corresponding path program 1 times [2022-07-12 10:09:16,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:16,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883990294] [2022-07-12 10:09:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:16,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:16,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:16,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883990294] [2022-07-12 10:09:16,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883990294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:16,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:16,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:16,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229753450] [2022-07-12 10:09:16,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:16,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:16,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-12 10:09:16,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 75 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:16,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-12 10:09:16,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:16,928 INFO L129 PetriNetUnfolder]: 26/219 cut-off events. [2022-07-12 10:09:16,928 INFO L130 PetriNetUnfolder]: For 58/77 co-relation queries the response was YES. [2022-07-12 10:09:16,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 219 events. 26/219 cut-off events. For 58/77 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 819 event pairs, 1 based on Foata normal form. 4/217 useless extension candidates. Maximal degree in co-relation 365. Up to 25 conditions per place. [2022-07-12 10:09:16,929 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 24 selfloop transitions, 8 changer transitions 11/101 dead transitions. [2022-07-12 10:09:16,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 384 flow [2022-07-12 10:09:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:09:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:09:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 837 transitions. [2022-07-12 10:09:16,931 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-07-12 10:09:16,931 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 837 transitions. [2022-07-12 10:09:16,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 837 transitions. [2022-07-12 10:09:16,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:16,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 837 transitions. [2022-07-12 10:09:16,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.0909090909091) internal successors, (837), 11 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,934 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,935 INFO L186 Difference]: Start difference. First operand has 100 places, 75 transitions, 186 flow. Second operand 11 states and 837 transitions. [2022-07-12 10:09:16,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 384 flow [2022-07-12 10:09:16,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 336 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-07-12 10:09:16,937 INFO L242 Difference]: Finished difference. Result has 104 places, 80 transitions, 235 flow [2022-07-12 10:09:16,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=235, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-07-12 10:09:16,938 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2022-07-12 10:09:16,938 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 235 flow [2022-07-12 10:09:16,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:16,938 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:16,938 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:16,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:09:16,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash -155865445, now seen corresponding path program 2 times [2022-07-12 10:09:16,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:16,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402723911] [2022-07-12 10:09:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:17,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402723911] [2022-07-12 10:09:17,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402723911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:17,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:17,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902790771] [2022-07-12 10:09:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:17,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:17,072 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-12 10:09:17,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:17,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-12 10:09:17,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:17,206 INFO L129 PetriNetUnfolder]: 21/203 cut-off events. [2022-07-12 10:09:17,206 INFO L130 PetriNetUnfolder]: For 168/385 co-relation queries the response was YES. [2022-07-12 10:09:17,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 203 events. 21/203 cut-off events. For 168/385 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 779 event pairs, 6 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 419. Up to 30 conditions per place. [2022-07-12 10:09:17,208 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 16 selfloop transitions, 6 changer transitions 16/97 dead transitions. [2022-07-12 10:09:17,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 97 transitions, 406 flow [2022-07-12 10:09:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 753 transitions. [2022-07-12 10:09:17,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8096774193548387 [2022-07-12 10:09:17,210 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 753 transitions. [2022-07-12 10:09:17,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 753 transitions. [2022-07-12 10:09:17,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:17,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 753 transitions. [2022-07-12 10:09:17,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,214 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,214 INFO L186 Difference]: Start difference. First operand has 104 places, 80 transitions, 235 flow. Second operand 10 states and 753 transitions. [2022-07-12 10:09:17,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 97 transitions, 406 flow [2022-07-12 10:09:17,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 374 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-07-12 10:09:17,217 INFO L242 Difference]: Finished difference. Result has 108 places, 80 transitions, 256 flow [2022-07-12 10:09:17,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=256, PETRI_PLACES=108, PETRI_TRANSITIONS=80} [2022-07-12 10:09:17,218 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2022-07-12 10:09:17,218 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 80 transitions, 256 flow [2022-07-12 10:09:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,219 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:17,219 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:17,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:09:17,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash 366282073, now seen corresponding path program 1 times [2022-07-12 10:09:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:17,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552810426] [2022-07-12 10:09:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:17,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:17,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552810426] [2022-07-12 10:09:17,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552810426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:17,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:17,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070793540] [2022-07-12 10:09:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:17,301 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-12 10:09:17,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 80 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:17,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-12 10:09:17,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:17,397 INFO L129 PetriNetUnfolder]: 12/141 cut-off events. [2022-07-12 10:09:17,398 INFO L130 PetriNetUnfolder]: For 221/349 co-relation queries the response was YES. [2022-07-12 10:09:17,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 141 events. 12/141 cut-off events. For 221/349 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 2 based on Foata normal form. 4/141 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2022-07-12 10:09:17,399 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 12 selfloop transitions, 5 changer transitions 18/92 dead transitions. [2022-07-12 10:09:17,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 393 flow [2022-07-12 10:09:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:09:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:09:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 823 transitions. [2022-07-12 10:09:17,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.804496578690127 [2022-07-12 10:09:17,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 823 transitions. [2022-07-12 10:09:17,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 823 transitions. [2022-07-12 10:09:17,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:17,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 823 transitions. [2022-07-12 10:09:17,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.81818181818181) internal successors, (823), 11 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,405 INFO L186 Difference]: Start difference. First operand has 108 places, 80 transitions, 256 flow. Second operand 11 states and 823 transitions. [2022-07-12 10:09:17,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 393 flow [2022-07-12 10:09:17,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 92 transitions, 324 flow, removed 26 selfloop flow, removed 11 redundant places. [2022-07-12 10:09:17,408 INFO L242 Difference]: Finished difference. Result has 109 places, 74 transitions, 216 flow [2022-07-12 10:09:17,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=109, PETRI_TRANSITIONS=74} [2022-07-12 10:09:17,409 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2022-07-12 10:09:17,409 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 74 transitions, 216 flow [2022-07-12 10:09:17,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,409 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:17,409 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:09:17,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:17,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1201238983, now seen corresponding path program 1 times [2022-07-12 10:09:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:17,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645677978] [2022-07-12 10:09:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:17,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:17,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645677978] [2022-07-12 10:09:17,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645677978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:17,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:17,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844913718] [2022-07-12 10:09:17,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:17,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:17,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:17,489 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-12 10:09:17,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 74 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:17,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-12 10:09:17,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:17,565 INFO L129 PetriNetUnfolder]: 4/81 cut-off events. [2022-07-12 10:09:17,565 INFO L130 PetriNetUnfolder]: For 61/66 co-relation queries the response was YES. [2022-07-12 10:09:17,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 81 events. 4/81 cut-off events. For 61/66 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 149. Up to 7 conditions per place. [2022-07-12 10:09:17,566 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-07-12 10:09:17,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 79 transitions, 284 flow [2022-07-12 10:09:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 781 transitions. [2022-07-12 10:09:17,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8397849462365592 [2022-07-12 10:09:17,567 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 781 transitions. [2022-07-12 10:09:17,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 781 transitions. [2022-07-12 10:09:17,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:17,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 781 transitions. [2022-07-12 10:09:17,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,571 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,571 INFO L186 Difference]: Start difference. First operand has 109 places, 74 transitions, 216 flow. Second operand 10 states and 781 transitions. [2022-07-12 10:09:17,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 79 transitions, 284 flow [2022-07-12 10:09:17,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 79 transitions, 222 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-07-12 10:09:17,572 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-07-12 10:09:17,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-07-12 10:09:17,573 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2022-07-12 10:09:17,573 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-07-12 10:09:17,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:17,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 10:09:17,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-12 10:09:17,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:09:17,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-12 10:09:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:09:17,577 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-07-12 10:09:17,579 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:09:17,579 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:09:17,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:09:17 BasicIcfg [2022-07-12 10:09:17,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:09:17,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:09:17,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:09:17,583 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:09:17,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:15" (3/4) ... [2022-07-12 10:09:17,585 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:09:17,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:09:17,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:09:17,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-12 10:09:17,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-12 10:09:17,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:09:17,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:09:17,593 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:09:17,620 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:09:17,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:09:17,621 INFO L158 Benchmark]: Toolchain (without parser) took 3401.22ms. Allocated memory was 104.9MB in the beginning and 186.6MB in the end (delta: 81.8MB). Free memory was 72.5MB in the beginning and 90.6MB in the end (delta: -18.1MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,621 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 59.0MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:09:17,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.35ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 69.6MB in the end (delta: 2.6MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.68ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 67.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,622 INFO L158 Benchmark]: Boogie Preprocessor took 29.35ms. Allocated memory is still 104.9MB. Free memory was 67.5MB in the beginning and 66.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,622 INFO L158 Benchmark]: RCFGBuilder took 359.63ms. Allocated memory is still 104.9MB. Free memory was 66.1MB in the beginning and 53.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,622 INFO L158 Benchmark]: TraceAbstraction took 2465.55ms. Allocated memory was 104.9MB in the beginning and 186.6MB in the end (delta: 81.8MB). Free memory was 53.4MB in the beginning and 92.7MB in the end (delta: -39.2MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,622 INFO L158 Benchmark]: Witness Printer took 37.54ms. Allocated memory is still 186.6MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:17,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 59.0MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.35ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 69.6MB in the end (delta: 2.6MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.68ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 67.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.35ms. Allocated memory is still 104.9MB. Free memory was 67.5MB in the beginning and 66.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.63ms. Allocated memory is still 104.9MB. Free memory was 66.1MB in the beginning and 53.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2465.55ms. Allocated memory was 104.9MB in the beginning and 186.6MB in the end (delta: 81.8MB). Free memory was 53.4MB in the beginning and 92.7MB in the end (delta: -39.2MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. * Witness Printer took 37.54ms. Allocated memory is still 186.6MB. Free memory was 92.7MB in the beginning and 90.6MB 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: - 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 7 procedures, 116 locations, 4 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: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 231 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 385 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 98 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=5, InterpolantAutomatonStates: 71, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 1970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:09:17,657 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