/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:10:18,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:10:18,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:10:18,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:10:18,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:10:18,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:10:18,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:10:18,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:10:18,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:10:18,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:10:18,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:10:18,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:10:18,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:10:18,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:10:18,453 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:10:18,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:10:18,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:10:18,454 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:10:18,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:10:18,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:10:18,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:10:18,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:10:18,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:10:18,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:10:18,456 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:10:18,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:10:18,456 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:10:18,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:10:18,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:10:18,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:10:18,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:10:18,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:10:18,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:10:18,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:10:18,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:10:18,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:10:18,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:10:18,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:10:18,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:10:18,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:10:18,460 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:10:18,461 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:10:18,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:10:18,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:10:18,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:10:18,738 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:10:18,738 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:10:18,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:10:20,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:10:20,280 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:10:20,281 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:10:20,303 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc42a0242/6821d47f97a24fec8025ac3f0431e89b/FLAGc2e267867 [2023-08-04 06:10:20,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc42a0242/6821d47f97a24fec8025ac3f0431e89b [2023-08-04 06:10:20,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:10:20,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:10:20,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:10:20,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:10:20,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:10:20,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6537ce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20, skipping insertion in model container [2023-08-04 06:10:20,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,373 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:10:20,529 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 06:10:20,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:10:20,768 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:10:20,778 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 06:10:20,786 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:10:20,788 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:10:20,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:10:20,861 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:10:20,861 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:10:20,866 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:10:20,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20 WrapperNode [2023-08-04 06:10:20,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:10:20,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:10:20,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:10:20,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:10:20,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,915 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 06:10:20,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:10:20,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:10:20,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:10:20,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:10:20,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:10:20,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:10:20,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:10:20,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:10:20,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (1/1) ... [2023-08-04 06:10:20,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:10:20,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:20,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 06:10:20,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 06:10:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:10:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:10:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:10:21,051 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:10:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:10:21,051 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:10:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:10:21,052 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:10:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:10:21,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:10:21,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:10:21,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:10:21,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:10:21,054 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:10:21,237 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:10:21,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:10:21,576 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:10:21,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:10:21,703 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:10:21,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:10:21 BoogieIcfgContainer [2023-08-04 06:10:21,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:10:21,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:10:21,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:10:21,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:10:21,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:10:20" (1/3) ... [2023-08-04 06:10:21,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f4159a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:10:21, skipping insertion in model container [2023-08-04 06:10:21,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:20" (2/3) ... [2023-08-04 06:10:21,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f4159a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:10:21, skipping insertion in model container [2023-08-04 06:10:21,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:10:21" (3/3) ... [2023-08-04 06:10:21,715 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix044_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:10:21,722 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:10:21,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:10:21,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:10:21,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:10:21,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:10:21,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:22,115 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-04 06:10:22,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:22,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 941 events. 62/941 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5847 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 06:10:22,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:22,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:22,142 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:10:22,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:22,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:22,293 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-04 06:10:22,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:22,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 941 events. 62/941 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5847 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 06:10:22,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 4610 [2023-08-04 06:10:26,276 INFO L134 LiptonReduction]: Checked pairs total: 11077 [2023-08-04 06:10:26,277 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-04 06:10:26,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:10:26,297 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11c7573d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:10:26,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:10:26,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:10:26,300 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-04 06:10:26,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:26,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:26,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:10:26,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:26,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash 20801938, now seen corresponding path program 1 times [2023-08-04 06:10:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983145567] [2023-08-04 06:10:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:10:26,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:26,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983145567] [2023-08-04 06:10:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983145567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:26,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:10:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:10:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514160174] [2023-08-04 06:10:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:26,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:10:26,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 294 [2023-08-04 06:10:26,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:26,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:26,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 294 [2023-08-04 06:10:26,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:29,482 INFO L124 PetriNetUnfolderBase]: 15198/23022 cut-off events. [2023-08-04 06:10:29,483 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-04 06:10:29,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45015 conditions, 23022 events. 15198/23022 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 159879 event pairs, 4536 based on Foata normal form. 0/21095 useless extension candidates. Maximal degree in co-relation 37761. Up to 14524 conditions per place. [2023-08-04 06:10:29,645 INFO L140 encePairwiseOnDemand]: 290/294 looper letters, 58 selfloop transitions, 2 changer transitions 7/70 dead transitions. [2023-08-04 06:10:29,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 295 flow [2023-08-04 06:10:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:10:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:10:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-04 06:10:29,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2023-08-04 06:10:29,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-04 06:10:29,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-04 06:10:29,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:29,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-04 06:10:29,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:29,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:29,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:29,674 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 486 transitions. [2023-08-04 06:10:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 295 flow [2023-08-04 06:10:29,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:10:29,680 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 88 flow [2023-08-04 06:10:29,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-08-04 06:10:29,684 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-04 06:10:29,685 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 88 flow [2023-08-04 06:10:29,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:29,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:29,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:10:29,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:10:29,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:29,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1474639088, now seen corresponding path program 1 times [2023-08-04 06:10:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:29,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692714204] [2023-08-04 06:10:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:10:29,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692714204] [2023-08-04 06:10:29,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692714204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:29,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:10:29,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:10:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915691189] [2023-08-04 06:10:29,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:29,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:29,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:10:29,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-08-04 06:10:29,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:29,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:29,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-08-04 06:10:29,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:31,541 INFO L124 PetriNetUnfolderBase]: 11065/15636 cut-off events. [2023-08-04 06:10:31,541 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2023-08-04 06:10:31,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32521 conditions, 15636 events. 11065/15636 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 88466 event pairs, 9952 based on Foata normal form. 0/14768 useless extension candidates. Maximal degree in co-relation 32505. Up to 15510 conditions per place. [2023-08-04 06:10:31,633 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 34 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 06:10:31,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 172 flow [2023-08-04 06:10:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:10:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:10:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-04 06:10:31,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090702947845805 [2023-08-04 06:10:31,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-04 06:10:31,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-04 06:10:31,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:31,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-04 06:10:31,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:31,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:31,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:31,645 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 88 flow. Second operand 3 states and 449 transitions. [2023-08-04 06:10:31,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 172 flow [2023-08-04 06:10:31,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:10:31,658 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 92 flow [2023-08-04 06:10:31,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 06:10:31,659 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-04 06:10:31,659 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 92 flow [2023-08-04 06:10:31,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:31,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:31,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:10:31,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 06:10:31,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:31,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:31,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1607285394, now seen corresponding path program 1 times [2023-08-04 06:10:31,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:31,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323290381] [2023-08-04 06:10:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:31,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:10:31,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:31,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323290381] [2023-08-04 06:10:31,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323290381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:10:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175829433] [2023-08-04 06:10:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:31,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:31,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:10:31,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:10:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:31,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:10:31,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:10:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:10:31,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:10:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175829433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:31,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:10:31,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:10:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975677376] [2023-08-04 06:10:31,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:31,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:10:31,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-08-04 06:10:31,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:31,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:31,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-08-04 06:10:31,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:33,118 INFO L124 PetriNetUnfolderBase]: 9392/13069 cut-off events. [2023-08-04 06:10:33,119 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-04 06:10:33,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26258 conditions, 13069 events. 9392/13069 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 70789 event pairs, 6722 based on Foata normal form. 0/12381 useless extension candidates. Maximal degree in co-relation 26241. Up to 12925 conditions per place. [2023-08-04 06:10:33,208 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 37 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 06:10:33,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 186 flow [2023-08-04 06:10:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:10:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:10:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-04 06:10:33,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2023-08-04 06:10:33,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-04 06:10:33,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-04 06:10:33,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:33,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-04 06:10:33,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:33,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:33,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:33,215 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 92 flow. Second operand 3 states and 452 transitions. [2023-08-04 06:10:33,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 186 flow [2023-08-04 06:10:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:10:33,217 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 96 flow [2023-08-04 06:10:33,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 06:10:33,218 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-04 06:10:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 96 flow [2023-08-04 06:10:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:33,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:33,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:10:33,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:10:33,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:33,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:33,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1056842361, now seen corresponding path program 1 times [2023-08-04 06:10:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969748627] [2023-08-04 06:10:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:10:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969748627] [2023-08-04 06:10:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969748627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:10:33,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314034003] [2023-08-04 06:10:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:33,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:33,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:10:33,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:10:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:33,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:10:33,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:10:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:10:33,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:10:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314034003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:33,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:10:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:10:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526788455] [2023-08-04 06:10:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:10:33,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-08-04 06:10:33,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:33,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:33,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-08-04 06:10:33,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:34,745 INFO L124 PetriNetUnfolderBase]: 8008/10957 cut-off events. [2023-08-04 06:10:34,745 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-04 06:10:34,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22122 conditions, 10957 events. 8008/10957 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 56900 event pairs, 5800 based on Foata normal form. 0/10444 useless extension candidates. Maximal degree in co-relation 22105. Up to 10687 conditions per place. [2023-08-04 06:10:34,816 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 40 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 06:10:34,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 202 flow [2023-08-04 06:10:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:10:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:10:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-04 06:10:34,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2023-08-04 06:10:34,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-04 06:10:34,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-04 06:10:34,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:34,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-04 06:10:34,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:34,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:34,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:34,824 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 96 flow. Second operand 3 states and 455 transitions. [2023-08-04 06:10:34,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 202 flow [2023-08-04 06:10:34,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:10:34,825 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 100 flow [2023-08-04 06:10:34,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 06:10:34,827 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-04 06:10:34,827 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 100 flow [2023-08-04 06:10:34,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:34,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:34,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:10:34,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:10:35,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 06:10:35,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:35,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash -762566466, now seen corresponding path program 1 times [2023-08-04 06:10:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954870168] [2023-08-04 06:10:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:35,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:10:35,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:35,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954870168] [2023-08-04 06:10:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954870168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:10:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330818509] [2023-08-04 06:10:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:35,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:35,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:10:35,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:10:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:35,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:10:35,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:10:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 06:10:35,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:10:35,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330818509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:35,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:10:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:10:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727365120] [2023-08-04 06:10:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:10:35,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-08-04 06:10:35,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:35,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:35,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-08-04 06:10:35,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:36,079 INFO L124 PetriNetUnfolderBase]: 7576/10365 cut-off events. [2023-08-04 06:10:36,080 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-04 06:10:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21095 conditions, 10365 events. 7576/10365 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 53554 event pairs, 4824 based on Foata normal form. 0/9976 useless extension candidates. Maximal degree in co-relation 21077. Up to 8639 conditions per place. [2023-08-04 06:10:36,158 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 45 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2023-08-04 06:10:36,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 226 flow [2023-08-04 06:10:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:10:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:10:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-04 06:10:36,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2023-08-04 06:10:36,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-04 06:10:36,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-04 06:10:36,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:36,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-04 06:10:36,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,166 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 100 flow. Second operand 3 states and 460 transitions. [2023-08-04 06:10:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 226 flow [2023-08-04 06:10:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:10:36,168 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 104 flow [2023-08-04 06:10:36,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-04 06:10:36,168 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-04 06:10:36,169 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 104 flow [2023-08-04 06:10:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:36,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:10:36,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:10:36,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:36,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:36,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2129083534, now seen corresponding path program 1 times [2023-08-04 06:10:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747033283] [2023-08-04 06:10:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:36,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 06:10:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747033283] [2023-08-04 06:10:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747033283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:10:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359828035] [2023-08-04 06:10:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:36,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:36,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:10:36,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 06:10:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:36,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:10:36,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:10:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 06:10:36,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:10:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 06:10:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359828035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:10:36,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:10:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 06:10:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490977502] [2023-08-04 06:10:36,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:10:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:10:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:10:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:10:36,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 294 [2023-08-04 06:10:36,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:36,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 294 [2023-08-04 06:10:36,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:36,669 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:10:36,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:36,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 06:10:36,670 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:10:36,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 06:10:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:10:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:10:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-04 06:10:36,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2023-08-04 06:10:36,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-04 06:10:36,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-04 06:10:36,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:36,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-04 06:10:36,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,682 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,682 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 104 flow. Second operand 4 states and 556 transitions. [2023-08-04 06:10:36,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 06:10:36,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:10:36,684 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 06:10:36,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 06:10:36,686 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -30 predicate places. [2023-08-04 06:10:36,686 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 06:10:36,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:36,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:10:36,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:10:36,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:10:36,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 06:10:36,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:36,899 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 06:10:36,901 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:10:36,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:36,985 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-04 06:10:36,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:36,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 941 events. 62/941 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5847 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 06:10:36,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:36,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:10:36,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,992 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:37,024 INFO L124 PetriNetUnfolderBase]: 14/445 cut-off events. [2023-08-04 06:10:37,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:37,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 445 events. 14/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2064 event pairs, 0 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-08-04 06:10:37,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-04 06:10:40,298 INFO L134 LiptonReduction]: Checked pairs total: 6543 [2023-08-04 06:10:40,298 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-04 06:10:40,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:10:40,301 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11c7573d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:10:40,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:10:40,310 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:10:40,310 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:10:40,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:40,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:40,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:10:40,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:10:40,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1482357841, now seen corresponding path program 1 times [2023-08-04 06:10:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:40,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717333756] [2023-08-04 06:10:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:10:40,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:10:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:10:40,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:10:40,366 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:10:40,366 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:10:40,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:10:40,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:10:40,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:10:40,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 06:10:40,367 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:10:40,368 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:10:40,369 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:10:40,369 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:10:40,417 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:10:40,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:40,866 INFO L124 PetriNetUnfolderBase]: 282/4379 cut-off events. [2023-08-04 06:10:40,867 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:10:40,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 4379 events. 282/4379 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42800 event pairs, 0 based on Foata normal form. 0/3894 useless extension candidates. Maximal degree in co-relation 3147. Up to 162 conditions per place. [2023-08-04 06:10:40,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:40,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:40,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:10:40,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:40,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:40,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:41,363 INFO L124 PetriNetUnfolderBase]: 282/4379 cut-off events. [2023-08-04 06:10:41,364 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:10:41,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 4379 events. 282/4379 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42800 event pairs, 0 based on Foata normal form. 0/3894 useless extension candidates. Maximal degree in co-relation 3147. Up to 162 conditions per place. [2023-08-04 06:10:41,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 11384 [2023-08-04 06:10:45,057 INFO L134 LiptonReduction]: Checked pairs total: 38437 [2023-08-04 06:10:45,057 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 06:10:45,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:10:45,063 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11c7573d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:10:45,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:10:45,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:10:45,065 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 06:10:45,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:45,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:45,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:10:45,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:10:45,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 35320153, now seen corresponding path program 1 times [2023-08-04 06:10:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:45,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902538995] [2023-08-04 06:10:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:10:45,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:45,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902538995] [2023-08-04 06:10:45,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902538995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:45,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:10:45,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:10:45,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813931792] [2023-08-04 06:10:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:10:45,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 337 [2023-08-04 06:10:45,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:10:45,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:45,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 337 [2023-08-04 06:10:45,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand