/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix056_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:44:02,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:44:02,127 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:44:02,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:44:02,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:44:02,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:44:02,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:44:02,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:44:02,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:44:02,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:44:02,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:44:02,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:44:02,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:44:02,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:44:02,162 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:44:02,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:44:02,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:44:02,163 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:44:02,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:44:02,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:44:02,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:44:02,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:44:02,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:44:02,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:44:02,164 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:44:02,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:44:02,165 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:44:02,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:44:02,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:44:02,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:44:02,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:44:02,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:44:02,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:44:02,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:44:02,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:44:02,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:44:02,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:44:02,167 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:44:02,167 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:44:02,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:44:02,167 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:44:02,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:44:02,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:44:02,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:44:02,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:44:02,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:44:02,354 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:44:02,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix056_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:44:03,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:44:03,419 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:44:03,419 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix056_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:44:03,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee501856d/b1728a346d39424a81a2cdfae67d4077/FLAG9852823aa [2023-08-03 17:44:03,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee501856d/b1728a346d39424a81a2cdfae67d4077 [2023-08-03 17:44:03,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:44:03,439 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:44:03,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:44:03,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:44:03,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:44:03,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc49721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03, skipping insertion in model container [2023-08-03 17:44:03,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,473 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:44:03,592 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_mix056_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:44:03,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:44:03,742 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:44:03,749 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_mix056_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:44:03,754 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:44:03,755 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:44:03,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:44:03,793 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:44:03,794 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:44:03,798 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:44:03,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03 WrapperNode [2023-08-03 17:44:03,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:44:03,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:44:03,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:44:03,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:44:03,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,827 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-08-03 17:44:03,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:44:03,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:44:03,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:44:03,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:44:03,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:44:03,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:44:03,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:44:03,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:44:03,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (1/1) ... [2023-08-03 17:44:03,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:44:03,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:44:03,878 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) [2023-08-03 17:44:03,892 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 [2023-08-03 17:44:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:44:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:44:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:44:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:44:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:44:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:44:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:44:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:44:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:44:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:44:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:44:03,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:44:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:44:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:44:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:44:03,907 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:44:04,006 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:44:04,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:44:04,298 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:44:04,375 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:44:04,375 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:44:04,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:44:04 BoogieIcfgContainer [2023-08-03 17:44:04,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:44:04,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:44:04,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:44:04,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:44:04,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:44:03" (1/3) ... [2023-08-03 17:44:04,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fb38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:44:04, skipping insertion in model container [2023-08-03 17:44:04,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:03" (2/3) ... [2023-08-03 17:44:04,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fb38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:44:04, skipping insertion in model container [2023-08-03 17:44:04,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:44:04" (3/3) ... [2023-08-03 17:44:04,381 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix056_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:44:04,386 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:44:04,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:44:04,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:44:04,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:44:04,423 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:44:04,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:44:04,542 INFO L124 PetriNetUnfolderBase]: 30/447 cut-off events. [2023-08-03 17:44:04,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:04,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 447 events. 30/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1957 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-03 17:44:04,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:44:04,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 128 transitions, 271 flow [2023-08-03 17:44:04,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:44:04,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 17:44:04,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 17:44:04,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:44:04,615 INFO L124 PetriNetUnfolderBase]: 30/447 cut-off events. [2023-08-03 17:44:04,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 447 events. 30/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1957 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-03 17:44:04,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 2728 [2023-08-03 17:44:07,135 INFO L134 LiptonReduction]: Checked pairs total: 7058 [2023-08-03 17:44:07,136 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 17:44:07,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:44:07,148 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;@448c515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:44:07,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:44:07,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:44:07,150 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:44:07,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:07,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:07,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:44:07,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:44:07,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash 17200928, now seen corresponding path program 1 times [2023-08-03 17:44:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:07,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017670240] [2023-08-03 17:44:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:07,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:44:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:44:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:44:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017670240] [2023-08-03 17:44:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017670240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:44:07,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:44:07,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:44:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582417956] [2023-08-03 17:44:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:44:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:44:07,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:44:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:44:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:44:07,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 237 [2023-08-03 17:44:07,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:44:07,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:44:07,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 237 [2023-08-03 17:44:07,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:44:07,818 INFO L124 PetriNetUnfolderBase]: 2468/4176 cut-off events. [2023-08-03 17:44:07,818 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 17:44:07,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8135 conditions, 4176 events. 2468/4176 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 26282 event pairs, 650 based on Foata normal form. 150/3844 useless extension candidates. Maximal degree in co-relation 6885. Up to 2665 conditions per place. [2023-08-03 17:44:07,833 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 45 selfloop transitions, 2 changer transitions 4/56 dead transitions. [2023-08-03 17:44:07,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 235 flow [2023-08-03 17:44:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:44:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:44:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-08-03 17:44:07,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443037974683544 [2023-08-03 17:44:07,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-08-03 17:44:07,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-08-03 17:44:07,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:44:07,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-08-03 17:44:07,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:44:07,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:44:07,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:44:07,852 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 85 flow. Second operand 3 states and 387 transitions. [2023-08-03 17:44:07,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 235 flow [2023-08-03 17:44:07,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:44:07,856 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 81 flow [2023-08-03 17:44:07,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-03 17:44:07,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-03 17:44:07,859 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 81 flow [2023-08-03 17:44:07,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:44:07,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:07,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:44:07,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:44:07,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:44:07,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -649705906, now seen corresponding path program 1 times [2023-08-03 17:44:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:07,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305441407] [2023-08-03 17:44:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:07,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:44:07,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:44:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:44:07,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:44:07,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:44:07,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:44:07,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:44:07,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:44:07,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:44:07,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:44:07,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:44:07,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:44:07,895 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:44:07,897 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:44:07,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:44:07,918 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:44:07,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:44:08,053 INFO L124 PetriNetUnfolderBase]: 93/1376 cut-off events. [2023-08-03 17:44:08,053 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:44:08,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1376 events. 93/1376 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9451 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-03 17:44:08,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:44:08,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 153 transitions, 342 flow [2023-08-03 17:44:08,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:44:08,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 17:44:08,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 17:44:08,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:44:08,151 INFO L124 PetriNetUnfolderBase]: 93/1376 cut-off events. [2023-08-03 17:44:08,151 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:44:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1376 events. 93/1376 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9451 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-03 17:44:08,171 INFO L119 LiptonReduction]: Number of co-enabled transitions 6560 [2023-08-03 17:44:10,748 INFO L134 LiptonReduction]: Checked pairs total: 21052 [2023-08-03 17:44:10,748 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-03 17:44:10,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:44:10,751 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;@448c515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:44:10,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:44:10,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:44:10,752 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:44:10,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:10,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:44:10,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:44:10,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 26196377, now seen corresponding path program 1 times [2023-08-03 17:44:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227066735] [2023-08-03 17:44:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:44:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:44:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:44:10,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227066735] [2023-08-03 17:44:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227066735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:44:10,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:44:10,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:44:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971360225] [2023-08-03 17:44:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:44:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:44:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:44:10,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:44:10,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:44:10,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 267 [2023-08-03 17:44:10,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:44:10,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:44:10,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 267 [2023-08-03 17:44:10,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:45:13,037 INFO L124 PetriNetUnfolderBase]: 633758/829591 cut-off events. [2023-08-03 17:45:13,038 INFO L125 PetriNetUnfolderBase]: For 9581/9581 co-relation queries the response was YES. [2023-08-03 17:45:14,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1633196 conditions, 829591 events. 633758/829591 cut-off events. For 9581/9581 co-relation queries the response was YES. Maximal size of possible extension queue 19532. Compared 6151095 event pairs, 105203 based on Foata normal form. 17577/752170 useless extension candidates. Maximal degree in co-relation 1376151. Up to 729279 conditions per place. [2023-08-03 17:45:17,286 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 75 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-03 17:45:17,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 389 flow [2023-08-03 17:45:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:45:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:45:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-03 17:45:17,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780274656679151 [2023-08-03 17:45:17,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-03 17:45:17,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-03 17:45:17,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:45:17,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-03 17:45:17,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:45:17,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:45:17,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:45:17,292 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 144 flow. Second operand 3 states and 463 transitions. [2023-08-03 17:45:17,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 389 flow [2023-08-03 17:45:17,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 383 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:45:17,309 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 157 flow [2023-08-03 17:45:17,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-03 17:45:17,310 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 17:45:17,310 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 157 flow [2023-08-03 17:45:17,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:45:17,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:45:17,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:45:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:45:17,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:45:17,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:45:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -977395983, now seen corresponding path program 1 times [2023-08-03 17:45:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:45:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599780497] [2023-08-03 17:45:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:45:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:45:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:45:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:45:17,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:45:17,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599780497] [2023-08-03 17:45:17,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599780497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:45:17,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:45:17,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:45:17,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22888927] [2023-08-03 17:45:17,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:45:17,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:45:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:45:17,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:45:17,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:45:17,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 17:45:17,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:45:17,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:45:17,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 17:45:17,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand