/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_rfi006_power.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:47:04,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:47:04,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:47:04,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:47:04,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:47:04,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:47:04,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:47:04,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:47:04,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:47:04,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:47:04,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:47:04,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:47:04,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:47:04,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:47:04,632 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:47:04,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:47:04,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:47:04,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:47:04,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:47:04,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:47:04,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:47:04,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:47:04,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:47:04,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:47:04,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:47:04,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:47:04,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:47:04,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:47:04,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:47:04,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:47:04,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:47:04,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:47:04,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:47:04,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:47:04,642 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:47:04,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:47:04,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:47:04,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:47:04,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:47:04,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:47:04,888 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:47:04,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi006_power.oepc_bound2.i [2023-08-03 17:47:06,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:47:06,378 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:47:06,378 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi006_power.oepc_bound2.i [2023-08-03 17:47:06,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f16f3c4/e3e20c2f6e5e4c7c88a331d984d014c8/FLAG6c740e7f1 [2023-08-03 17:47:06,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f16f3c4/e3e20c2f6e5e4c7c88a331d984d014c8 [2023-08-03 17:47:06,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:47:06,413 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:47:06,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:47:06,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:47:06,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:47:06,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45863edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06, skipping insertion in model container [2023-08-03 17:47:06,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,472 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:47:06,612 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_rfi006_power.oepc_bound2.i[994,1007] [2023-08-03 17:47:06,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:47:06,851 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:47:06,859 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_rfi006_power.oepc_bound2.i[994,1007] [2023-08-03 17:47:06,866 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:47:06,868 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:47:06,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:47:06,924 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:47:06,924 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:47:06,929 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:47:06,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06 WrapperNode [2023-08-03 17:47:06,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:47:06,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:47:06,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:47:06,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:47:06,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,979 INFO L138 Inliner]: procedures = 176, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2023-08-03 17:47:06,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:47:06,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:47:06,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:47:06,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:47:06,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:07,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:07,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:07,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:07,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:07,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:47:07,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:47:07,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:47:07,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:47:07,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:07,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:47:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:47:07,075 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 17:47:07,096 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 17:47:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 17:47:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:47:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:47:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:47:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:47:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:47:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:47:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:47:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:47:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:47:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:47:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:47:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:47:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:47:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:47:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:47:07,120 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 17:47:07,277 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:47:07,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:47:07,766 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:47:08,048 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:47:08,048 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:47:08,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:47:08 BoogieIcfgContainer [2023-08-03 17:47:08,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:47:08,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:47:08,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:47:08,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:47:08,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:47:06" (1/3) ... [2023-08-03 17:47:08,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adfde7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:47:08, skipping insertion in model container [2023-08-03 17:47:08,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06" (2/3) ... [2023-08-03 17:47:08,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adfde7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:47:08, skipping insertion in model container [2023-08-03 17:47:08,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:47:08" (3/3) ... [2023-08-03 17:47:08,061 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi006_power.oepc_bound2.i [2023-08-03 17:47:08,068 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:47:08,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:47:08,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 17:47:08,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:47:08,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:47:08,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 145 transitions, 305 flow [2023-08-03 17:47:08,358 INFO L124 PetriNetUnfolderBase]: 30/461 cut-off events. [2023-08-03 17:47:08,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:08,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 461 events. 30/461 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1926 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2023-08-03 17:47:08,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 145 transitions, 305 flow [2023-08-03 17:47:08,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 133 transitions, 281 flow [2023-08-03 17:47:08,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:47:08,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 133 transitions, 281 flow [2023-08-03 17:47:08,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 133 transitions, 281 flow [2023-08-03 17:47:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 281 flow [2023-08-03 17:47:08,438 INFO L124 PetriNetUnfolderBase]: 22/365 cut-off events. [2023-08-03 17:47:08,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 365 events. 22/365 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1368 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2023-08-03 17:47:08,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 1836 [2023-08-03 17:47:14,836 INFO L134 LiptonReduction]: Checked pairs total: 4806 [2023-08-03 17:47:14,836 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-03 17:47:14,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:47:14,851 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;@46524ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:47:14,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 17:47:14,857 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:47:14,857 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 17:47:14,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:14,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:14,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:47:14,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:47:14,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -630827893, now seen corresponding path program 1 times [2023-08-03 17:47:14,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:14,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650271048] [2023-08-03 17:47:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:14,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:47:14,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:47:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:47:15,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:47:15,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:47:15,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 17:47:15,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 17:47:15,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 17:47:15,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 17:47:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:47:15,031 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 17:47:15,033 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:47:15,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:47:15,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:47:15,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 167 transitions, 370 flow [2023-08-03 17:47:15,251 INFO L124 PetriNetUnfolderBase]: 93/1374 cut-off events. [2023-08-03 17:47:15,251 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:47:15,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 1374 events. 93/1374 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9238 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1006. Up to 54 conditions per place. [2023-08-03 17:47:15,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 167 transitions, 370 flow [2023-08-03 17:47:15,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 155 transitions, 346 flow [2023-08-03 17:47:15,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:47:15,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 155 transitions, 346 flow [2023-08-03 17:47:15,262 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 155 transitions, 346 flow [2023-08-03 17:47:15,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 155 transitions, 346 flow [2023-08-03 17:47:15,368 INFO L124 PetriNetUnfolderBase]: 66/1050 cut-off events. [2023-08-03 17:47:15,369 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:47:15,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 1050 events. 66/1050 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6461 event pairs, 0 based on Foata normal form. 0/945 useless extension candidates. Maximal degree in co-relation 790. Up to 54 conditions per place. [2023-08-03 17:47:15,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 4508 [2023-08-03 17:47:22,737 INFO L134 LiptonReduction]: Checked pairs total: 14696 [2023-08-03 17:47:22,737 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 17:47:22,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:47:22,740 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;@46524ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:47:22,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 17:47:22,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:47:22,746 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-08-03 17:47:22,746 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 17:47:22,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:22,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:47:22,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:47:22,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1413056459, now seen corresponding path program 1 times [2023-08-03 17:47:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:22,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721080692] [2023-08-03 17:47:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:47:22,950 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 17:47:22,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:47:22,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721080692] [2023-08-03 17:47:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721080692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:47:22,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:47:22,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:47:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100500301] [2023-08-03 17:47:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:47:22,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:47:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:47:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:47:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:47:23,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 283 [2023-08-03 17:47:23,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 17:47:23,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:47:23,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 283 [2023-08-03 17:47:23,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:47:54,622 INFO L124 PetriNetUnfolderBase]: 155552/202344 cut-off events. [2023-08-03 17:47:54,623 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-03 17:47:55,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406187 conditions, 202344 events. 155552/202344 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 5463. Compared 1285549 event pairs, 126978 based on Foata normal form. 5292/196476 useless extension candidates. Maximal degree in co-relation 116340. Up to 198414 conditions per place. [2023-08-03 17:47:55,869 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 37 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-03 17:47:55,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 216 flow [2023-08-03 17:47:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:47:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:47:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-03 17:47:55,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547703180212014 [2023-08-03 17:47:55,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-03 17:47:55,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-03 17:47:55,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:47:55,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-03 17:47:55,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 17:47:55,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:47:55,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:47:55,906 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 130 flow. Second operand 3 states and 471 transitions. [2023-08-03 17:47:55,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 216 flow [2023-08-03 17:47:55,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 210 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:47:55,924 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 132 flow [2023-08-03 17:47:55,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-03 17:47:55,930 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-08-03 17:47:55,933 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 132 flow [2023-08-03 17:47:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 17:47:55,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:55,939 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:47:55,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:47:55,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:47:55,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:55,940 INFO L85 PathProgramCache]: Analyzing trace with hash 238450298, now seen corresponding path program 1 times [2023-08-03 17:47:55,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308912567] [2023-08-03 17:47:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:47:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:47:56,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:47:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308912567] [2023-08-03 17:47:56,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308912567] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:47:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839284585] [2023-08-03 17:47:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:56,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:47:56,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:47:56,064 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) [2023-08-03 17:47:56,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 17:47:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:47:56,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:47:56,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:47:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:47:56,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:47:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839284585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:47:56,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:47:56,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:47:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022568764] [2023-08-03 17:47:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:47:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:47:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:47:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:47:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:47:56,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 283 [2023-08-03 17:47:56,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 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 17:47:56,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:47:56,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 283 [2023-08-03 17:47:56,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:20,472 INFO L124 PetriNetUnfolderBase]: 135758/176979 cut-off events. [2023-08-03 17:48:20,472 INFO L125 PetriNetUnfolderBase]: For 3183/3183 co-relation queries the response was YES. [2023-08-03 17:48:20,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354899 conditions, 176979 events. 135758/176979 cut-off events. For 3183/3183 co-relation queries the response was YES. Maximal size of possible extension queue 4781. Compared 1115502 event pairs, 91944 based on Foata normal form. 9/171144 useless extension candidates. Maximal degree in co-relation 126635. Up to 173293 conditions per place. [2023-08-03 17:48:21,565 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 40 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-03 17:48:21,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 234 flow [2023-08-03 17:48:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:48:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:48:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 755 transitions. [2023-08-03 17:48:21,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335689045936396 [2023-08-03 17:48:21,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 755 transitions. [2023-08-03 17:48:21,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 755 transitions. [2023-08-03 17:48:21,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:21,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 755 transitions. [2023-08-03 17:48:21,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 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 17:48:21,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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 17:48:21,576 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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 17:48:21,577 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 132 flow. Second operand 5 states and 755 transitions. [2023-08-03 17:48:21,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 234 flow [2023-08-03 17:48:21,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:48:21,581 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 146 flow [2023-08-03 17:48:21,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-03 17:48:21,582 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2023-08-03 17:48:21,582 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 146 flow [2023-08-03 17:48:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 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 17:48:21,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:21,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:48:21,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 17:48:21,789 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 [2023-08-03 17:48:21,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:48:21,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:21,790 INFO L85 PathProgramCache]: Analyzing trace with hash 618325753, now seen corresponding path program 1 times [2023-08-03 17:48:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:21,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785842610] [2023-08-03 17:48:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:21,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:48:21,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785842610] [2023-08-03 17:48:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785842610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:48:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261110184] [2023-08-03 17:48:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:21,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:48:21,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:48:21,892 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) [2023-08-03 17:48:21,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 17:48:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:22,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:48:22,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:48:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:48:22,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:48:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261110184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:48:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:48:22,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118173719] [2023-08-03 17:48:22,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:22,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:22,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:48:22,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 283 [2023-08-03 17:48:22,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 17:48:22,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:22,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 283 [2023-08-03 17:48:22,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:45,108 INFO L124 PetriNetUnfolderBase]: 131626/169972 cut-off events. [2023-08-03 17:48:45,109 INFO L125 PetriNetUnfolderBase]: For 2794/2794 co-relation queries the response was YES. [2023-08-03 17:48:45,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342035 conditions, 169972 events. 131626/169972 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 4654. Compared 1053812 event pairs, 104758 based on Foata normal form. 0/164404 useless extension candidates. Maximal degree in co-relation 98088. Up to 167284 conditions per place. [2023-08-03 17:48:46,113 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 43 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 17:48:46,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 256 flow [2023-08-03 17:48:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-03 17:48:46,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558303886925795 [2023-08-03 17:48:46,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-03 17:48:46,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-03 17:48:46,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:46,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-03 17:48:46,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 17:48:46,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:48:46,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:48:46,119 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 146 flow. Second operand 3 states and 474 transitions. [2023-08-03 17:48:46,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 256 flow [2023-08-03 17:48:46,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 249 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 17:48:46,121 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 154 flow [2023-08-03 17:48:46,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2023-08-03 17:48:46,122 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-08-03 17:48:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 154 flow [2023-08-03 17:48:46,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 17:48:46,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:46,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:48:46,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 17:48:46,327 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 [2023-08-03 17:48:46,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:48:46,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash -762480234, now seen corresponding path program 1 times [2023-08-03 17:48:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:46,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312329850] [2023-08-03 17:48:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:46,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:48:46,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:46,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312329850] [2023-08-03 17:48:46,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312329850] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:48:46,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362234678] [2023-08-03 17:48:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:46,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:48:46,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:48:46,421 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) [2023-08-03 17:48:46,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 17:48:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:46,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:48:46,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:48:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 17:48:46,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:48:46,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362234678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:46,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:48:46,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:48:46,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583227323] [2023-08-03 17:48:46,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:46,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:46,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:46,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:48:46,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 283 [2023-08-03 17:48:46,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 17:48:46,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:46,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 283 [2023-08-03 17:48:46,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:49:09,143 INFO L124 PetriNetUnfolderBase]: 129210/166692 cut-off events. [2023-08-03 17:49:09,143 INFO L125 PetriNetUnfolderBase]: For 1644/1644 co-relation queries the response was YES. [2023-08-03 17:49:09,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335895 conditions, 166692 events. 129210/166692 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 4689. Compared 1013114 event pairs, 101106 based on Foata normal form. 0/161652 useless extension candidates. Maximal degree in co-relation 96468. Up to 159000 conditions per place. [2023-08-03 17:49:10,363 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 51 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 17:49:10,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 290 flow [2023-08-03 17:49:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:49:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:49:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-03 17:49:10,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653710247349824 [2023-08-03 17:49:10,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-03 17:49:10,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-03 17:49:10,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:49:10,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-03 17:49:10,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 17:49:10,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:49:10,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 17:49:10,374 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 154 flow. Second operand 3 states and 480 transitions. [2023-08-03 17:49:10,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 290 flow [2023-08-03 17:49:10,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:49:10,380 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 163 flow [2023-08-03 17:49:10,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-08-03 17:49:10,381 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-03 17:49:10,381 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 163 flow [2023-08-03 17:49:10,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 17:49:10,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:49:10,381 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:49:10,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 17:49:10,599 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 [2023-08-03 17:49:10,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:49:10,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:49:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1970200105, now seen corresponding path program 1 times [2023-08-03 17:49:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:49:10,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122026680] [2023-08-03 17:49:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:10,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:49:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:49:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:49:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122026680] [2023-08-03 17:49:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122026680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:49:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653849227] [2023-08-03 17:49:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:10,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:49:10,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:49:10,651 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) [2023-08-03 17:49:10,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 17:49:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:10,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:49:10,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:49:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:49:10,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:49:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:49:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653849227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:49:10,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:49:10,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:49:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756840131] [2023-08-03 17:49:10,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:49:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:49:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:49:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:49:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:49:10,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 283 [2023-08-03 17:49:10,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 17:49:10,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:49:10,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 283 [2023-08-03 17:49:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:49:28,879 INFO L124 PetriNetUnfolderBase]: 101266/129275 cut-off events. [2023-08-03 17:49:28,880 INFO L125 PetriNetUnfolderBase]: For 9552/9552 co-relation queries the response was YES. [2023-08-03 17:49:29,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268621 conditions, 129275 events. 101266/129275 cut-off events. For 9552/9552 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 748133 event pairs, 66420 based on Foata normal form. 3/129098 useless extension candidates. Maximal degree in co-relation 95325. Up to 127384 conditions per place. [2023-08-03 17:49:29,716 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 42 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-03 17:49:29,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 54 transitions, 261 flow [2023-08-03 17:49:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:49:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:49:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 612 transitions. [2023-08-03 17:49:29,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406360424028268 [2023-08-03 17:49:29,718 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 612 transitions. [2023-08-03 17:49:29,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 612 transitions. [2023-08-03 17:49:29,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:49:29,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 612 transitions. [2023-08-03 17:49:29,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 17:49:29,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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 17:49:29,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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 17:49:29,722 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 163 flow. Second operand 4 states and 612 transitions. [2023-08-03 17:49:29,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 54 transitions, 261 flow [2023-08-03 17:49:29,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 54 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:49:29,729 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 159 flow [2023-08-03 17:49:29,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-08-03 17:49:29,730 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2023-08-03 17:49:29,730 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 159 flow [2023-08-03 17:49:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 17:49:29,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:49:29,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:49:29,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 17:49:29,935 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 [2023-08-03 17:49:29,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:49:29,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:49:29,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1804506500, now seen corresponding path program 1 times [2023-08-03 17:49:29,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:49:29,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361429191] [2023-08-03 17:49:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:49:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:49:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:49:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361429191] [2023-08-03 17:49:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361429191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:49:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125143633] [2023-08-03 17:49:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:30,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:49:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:49:30,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:49:30,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 17:49:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:30,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:49:30,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:49:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:49:30,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:49:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125143633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:49:30,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:49:30,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 17:49:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418374001] [2023-08-03 17:49:30,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:49:30,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:49:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:49:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:49:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:49:30,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 283 [2023-08-03 17:49:30,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 17:49:30,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:49:30,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 283 [2023-08-03 17:49:30,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:49:48,022 INFO L124 PetriNetUnfolderBase]: 100858/128584 cut-off events. [2023-08-03 17:49:48,023 INFO L125 PetriNetUnfolderBase]: For 8431/8431 co-relation queries the response was YES. [2023-08-03 17:49:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266644 conditions, 128584 events. 100858/128584 cut-off events. For 8431/8431 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 743045 event pairs, 31342 based on Foata normal form. 144/128548 useless extension candidates. Maximal degree in co-relation 94632. Up to 126018 conditions per place. [2023-08-03 17:49:48,857 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 57 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-03 17:49:48,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 327 flow [2023-08-03 17:49:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:49:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:49:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 770 transitions. [2023-08-03 17:49:48,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441696113074205 [2023-08-03 17:49:48,860 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 770 transitions. [2023-08-03 17:49:48,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 770 transitions. [2023-08-03 17:49:48,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:49:48,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 770 transitions. [2023-08-03 17:49:48,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:49:48,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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 17:49:48,864 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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 17:49:48,864 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 159 flow. Second operand 5 states and 770 transitions. [2023-08-03 17:49:48,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 327 flow [2023-08-03 17:49:48,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 17:49:48,875 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 171 flow [2023-08-03 17:49:48,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-08-03 17:49:48,876 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2023-08-03 17:49:48,876 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 171 flow [2023-08-03 17:49:48,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 17:49:48,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:49:48,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:49:48,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 17:49:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:49:49,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:49:49,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:49:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash 462103302, now seen corresponding path program 1 times [2023-08-03 17:49:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:49:49,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044829145] [2023-08-03 17:49:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:49:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:49:49,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:49:49,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044829145] [2023-08-03 17:49:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044829145] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:49:49,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124373327] [2023-08-03 17:49:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:49,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:49:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:49:49,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:49:49,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 17:49:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:49,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:49:49,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:49:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:49:49,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:49:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:49:49,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124373327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:49:49,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:49:49,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:49:49,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071457189] [2023-08-03 17:49:49,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:49:49,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:49:49,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:49:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:49:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:49:49,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 283 [2023-08-03 17:49:49,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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 17:49:49,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:49:49,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 283 [2023-08-03 17:49:49,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand