/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_safe009_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:10:12,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:10:12,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:10:12,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:10:12,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:10:12,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:10:12,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:10:12,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:10:12,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:10:12,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:10:12,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:10:12,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:10:12,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:10:12,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:10:12,759 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:10:12,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:10:12,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:10:12,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:10:12,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:10:12,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:10:12,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:10:12,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:10:12,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:10:12,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:10:12,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:10:12,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:10:12,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:10:12,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:10:12,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:10:12,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:10:12,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:10:12,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:10:12,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:10:12,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:10:12,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:10:12,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:10:12,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:10:12,766 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:10:12,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:10:12,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:10:12,766 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:10:12,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:10:12,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:10:13,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:10:13,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:10:13,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:10:13,025 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:10:13,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe009_rmo.oepc_bound2.i [2023-08-03 18:10:14,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:10:14,476 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:10:14,476 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe009_rmo.oepc_bound2.i [2023-08-03 18:10:14,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5811248b7/63425decd7fa4a6f9d3e5ebb470a58f1/FLAG9ff5c2e82 [2023-08-03 18:10:14,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5811248b7/63425decd7fa4a6f9d3e5ebb470a58f1 [2023-08-03 18:10:14,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:10:14,508 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:10:14,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:10:14,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:10:14,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:10:14,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:10:14" (1/1) ... [2023-08-03 18:10:14,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a46fdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:14, skipping insertion in model container [2023-08-03 18:10:14,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:10:14" (1/1) ... [2023-08-03 18:10:14,580 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:10:14,725 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_safe009_rmo.oepc_bound2.i[993,1006] [2023-08-03 18:10:14,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:10:14,970 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:10:14,983 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_safe009_rmo.oepc_bound2.i[993,1006] [2023-08-03 18:10:15,000 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:10:15,002 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:10:15,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:10:15,084 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:10:15,085 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:10:15,091 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:10:15,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15 WrapperNode [2023-08-03 18:10:15,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:10:15,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:10:15,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:10:15,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:10:15,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,139 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 193 [2023-08-03 18:10:15,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:10:15,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:10:15,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:10:15,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:10:15,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:10:15,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:10:15,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:10:15,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:10:15,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (1/1) ... [2023-08-03 18:10:15,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:10:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:10:15,209 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 18:10:15,211 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 18:10:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:10:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:10:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:10:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:10:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:10:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:10:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:10:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:10:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:10:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:10:15,259 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 18:10:15,389 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:10:15,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:10:15,812 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:10:16,067 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:10:16,067 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:10:16,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:10:16 BoogieIcfgContainer [2023-08-03 18:10:16,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:10:16,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:10:16,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:10:16,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:10:16,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:10:14" (1/3) ... [2023-08-03 18:10:16,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3b60e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:10:16, skipping insertion in model container [2023-08-03 18:10:16,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:10:15" (2/3) ... [2023-08-03 18:10:16,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3b60e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:10:16, skipping insertion in model container [2023-08-03 18:10:16,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:10:16" (3/3) ... [2023-08-03 18:10:16,079 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe009_rmo.oepc_bound2.i [2023-08-03 18:10:16,086 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:10:16,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:10:16,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:10:16,096 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:10:16,164 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:10:16,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 144 transitions, 303 flow [2023-08-03 18:10:16,343 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 18:10:16,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:10:16,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 30/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1913 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-08-03 18:10:16,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 144 transitions, 303 flow [2023-08-03 18:10:16,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 279 flow [2023-08-03 18:10:16,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:10:16,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 132 transitions, 279 flow [2023-08-03 18:10:16,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 132 transitions, 279 flow [2023-08-03 18:10:16,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 132 transitions, 279 flow [2023-08-03 18:10:16,417 INFO L124 PetriNetUnfolderBase]: 22/364 cut-off events. [2023-08-03 18:10:16,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:10:16,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 364 events. 22/364 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1374 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 237. Up to 16 conditions per place. [2023-08-03 18:10:16,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 1836 [2023-08-03 18:10:22,293 INFO L134 LiptonReduction]: Checked pairs total: 5227 [2023-08-03 18:10:22,293 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 18:10:22,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:10:22,326 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;@72b785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:10:22,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:10:22,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:10:22,332 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2023-08-03 18:10:22,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:10:22,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:10:22,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:10:22,334 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 18:10:22,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:10:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1997268726, now seen corresponding path program 1 times [2023-08-03 18:10:22,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:10:22,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923282057] [2023-08-03 18:10:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:10:22,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:10:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:10:22,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:10:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:10:22,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:10:22,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:10:22,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 18:10:22,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 18:10:22,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:10:22,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:10:22,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:10:22,527 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 18:10:22,530 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:10:22,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:10:22,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:10:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 166 transitions, 368 flow [2023-08-03 18:10:22,821 INFO L124 PetriNetUnfolderBase]: 93/1373 cut-off events. [2023-08-03 18:10:22,821 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:10:22,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 1373 events. 93/1373 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9189 event pairs, 0 based on Foata normal form. 0/1214 useless extension candidates. Maximal degree in co-relation 1005. Up to 54 conditions per place. [2023-08-03 18:10:22,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 166 transitions, 368 flow [2023-08-03 18:10:22,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 154 transitions, 344 flow [2023-08-03 18:10:22,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:10:22,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 154 transitions, 344 flow [2023-08-03 18:10:22,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 154 transitions, 344 flow [2023-08-03 18:10:22,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 154 transitions, 344 flow [2023-08-03 18:10:22,966 INFO L124 PetriNetUnfolderBase]: 66/1049 cut-off events. [2023-08-03 18:10:22,967 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:10:22,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 1049 events. 66/1049 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6466 event pairs, 0 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 789. Up to 54 conditions per place. [2023-08-03 18:10:22,988 INFO L119 LiptonReduction]: Number of co-enabled transitions 4508 [2023-08-03 18:10:28,551 INFO L134 LiptonReduction]: Checked pairs total: 14218 [2023-08-03 18:10:28,551 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-03 18:10:28,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:10:28,554 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;@72b785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:10:28,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:10:28,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:10:28,560 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-08-03 18:10:28,560 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 18:10:28,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:10:28,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:10:28,561 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 18:10:28,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:10:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 923925349, now seen corresponding path program 1 times [2023-08-03 18:10:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:10:28,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122840548] [2023-08-03 18:10:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:10:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:10:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:10:28,796 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 18:10:28,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:10:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122840548] [2023-08-03 18:10:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122840548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:10:28,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:10:28,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:10:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317922243] [2023-08-03 18:10:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:10:28,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:10:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:10:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:10:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:10:28,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:10:28,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 18:10:28,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:10:28,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:10:28,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:10:53,791 INFO L124 PetriNetUnfolderBase]: 155552/203196 cut-off events. [2023-08-03 18:10:53,792 INFO L125 PetriNetUnfolderBase]: For 3720/3720 co-relation queries the response was YES. [2023-08-03 18:10:54,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406271 conditions, 203196 events. 155552/203196 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 5536. Compared 1300993 event pairs, 126978 based on Foata normal form. 5292/195894 useless extension candidates. Maximal degree in co-relation 116368. Up to 198414 conditions per place. [2023-08-03 18:10:55,204 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 37 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-03 18:10:55,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 216 flow [2023-08-03 18:10:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:10:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:10:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-03 18:10:55,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551601423487544 [2023-08-03 18:10:55,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-03 18:10:55,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-03 18:10:55,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:10:55,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-03 18:10:55,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 18:10:55,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:10:55,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:10:55,251 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 130 flow. Second operand 3 states and 468 transitions. [2023-08-03 18:10:55,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 216 flow [2023-08-03 18:10:55,267 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 18:10:55,268 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 132 flow [2023-08-03 18:10:55,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, 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 18:10:55,279 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-08-03 18:10:55,281 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 132 flow [2023-08-03 18:10:55,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 18:10:55,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:10:55,287 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:10:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:10:55,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 18:10:55,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:10:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2078606315, now seen corresponding path program 1 times [2023-08-03 18:10:55,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:10:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100462821] [2023-08-03 18:10:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:10:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:10:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:10:55,409 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 18:10:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:10:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100462821] [2023-08-03 18:10:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100462821] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:10:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730692309] [2023-08-03 18:10:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:10:55,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:10:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:10:55,413 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 18:10:55,419 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 18:10:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:10:55,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:10:55,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:10:55,591 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 18:10:55,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:10:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730692309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:10:55,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:10:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:10:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749009509] [2023-08-03 18:10:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:10:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:10:55,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:10:55,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:10:55,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:10:55,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 281 [2023-08-03 18:10:55,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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 18:10:55,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:10:55,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 281 [2023-08-03 18:10:55,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:15,804 INFO L124 PetriNetUnfolderBase]: 135758/177603 cut-off events. [2023-08-03 18:11:15,804 INFO L125 PetriNetUnfolderBase]: For 3231/3231 co-relation queries the response was YES. [2023-08-03 18:11:16,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355139 conditions, 177603 events. 135758/177603 cut-off events. For 3231/3231 co-relation queries the response was YES. Maximal size of possible extension queue 4822. Compared 1125260 event pairs, 91944 based on Foata normal form. 9/170556 useless extension candidates. Maximal degree in co-relation 126715. Up to 173293 conditions per place. [2023-08-03 18:11:16,931 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 40 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-03 18:11:16,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 234 flow [2023-08-03 18:11:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:11:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:11:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 750 transitions. [2023-08-03 18:11:16,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338078291814946 [2023-08-03 18:11:16,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 750 transitions. [2023-08-03 18:11:16,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 750 transitions. [2023-08-03 18:11:16,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:16,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 750 transitions. [2023-08-03 18:11:16,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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 18:11:16,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:11:16,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:11:16,940 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 132 flow. Second operand 5 states and 750 transitions. [2023-08-03 18:11:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 234 flow [2023-08-03 18:11:16,941 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 18:11:16,942 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 146 flow [2023-08-03 18:11:16,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, 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 18:11:16,943 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2023-08-03 18:11:16,943 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 146 flow [2023-08-03 18:11:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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 18:11:16,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:16,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:16,953 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 18:11:17,153 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 18:11:17,154 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 18:11:17,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1858617174, now seen corresponding path program 1 times [2023-08-03 18:11:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607259210] [2023-08-03 18:11:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:17,274 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 18:11:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607259210] [2023-08-03 18:11:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607259210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621974193] [2023-08-03 18:11:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:17,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:17,280 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 18:11:17,285 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 18:11:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:17,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:11:17,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:17,420 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 18:11:17,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:11:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621974193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:11:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:11:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632056192] [2023-08-03 18:11:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:17,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:11:17,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 146 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 18:11:17,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:17,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:11:17,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:35,701 INFO L124 PetriNetUnfolderBase]: 131626/170164 cut-off events. [2023-08-03 18:11:35,702 INFO L125 PetriNetUnfolderBase]: For 2986/2986 co-relation queries the response was YES. [2023-08-03 18:11:36,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342227 conditions, 170164 events. 131626/170164 cut-off events. For 2986/2986 co-relation queries the response was YES. Maximal size of possible extension queue 4656. Compared 1056880 event pairs, 104758 based on Foata normal form. 0/164392 useless extension candidates. Maximal degree in co-relation 98152. Up to 167284 conditions per place. [2023-08-03 18:11:36,695 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 43 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 18:11:36,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 256 flow [2023-08-03 18:11:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-03 18:11:36,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587188612099644 [2023-08-03 18:11:36,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-03 18:11:36,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-03 18:11:36,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:36,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-03 18:11:36,699 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 18:11:36,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:11:36,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:11:36,701 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 146 flow. Second operand 3 states and 471 transitions. [2023-08-03 18:11:36,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 256 flow [2023-08-03 18:11:36,703 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 18:11:36,704 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 154 flow [2023-08-03 18:11:36,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, 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 18:11:36,705 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-08-03 18:11:36,705 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 154 flow [2023-08-03 18:11:36,705 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 18:11:36,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:36,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:36,711 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 18:11:36,911 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 18:11:36,912 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 18:11:36,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash -771212803, now seen corresponding path program 1 times [2023-08-03 18:11:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:36,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059965678] [2023-08-03 18:11:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:36,985 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 18:11:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059965678] [2023-08-03 18:11:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059965678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851452284] [2023-08-03 18:11:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:36,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:36,988 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 18:11:36,988 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 18:11:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:37,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:11:37,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:37,145 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 18:11:37,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:11:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851452284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:11:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:11:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701288419] [2023-08-03 18:11:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:37,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:11:37,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 154 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 18:11:37,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:37,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:11:37,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:55,246 INFO L124 PetriNetUnfolderBase]: 129210/166692 cut-off events. [2023-08-03 18:11:55,246 INFO L125 PetriNetUnfolderBase]: For 1644/1644 co-relation queries the response was YES. [2023-08-03 18:11:55,796 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 1011937 event pairs, 101106 based on Foata normal form. 0/161640 useless extension candidates. Maximal degree in co-relation 96468. Up to 159000 conditions per place. [2023-08-03 18:11:56,468 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 51 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 18:11:56,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 290 flow [2023-08-03 18:11:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-03 18:11:56,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658362989323843 [2023-08-03 18:11:56,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-03 18:11:56,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-03 18:11:56,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:56,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-03 18:11:56,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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 18:11:56,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:11:56,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:11:56,474 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 154 flow. Second operand 3 states and 477 transitions. [2023-08-03 18:11:56,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 290 flow [2023-08-03 18:11:56,476 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 18:11:56,477 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 163 flow [2023-08-03 18:11:56,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, 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 18:11:56,478 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-03 18:11:56,478 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 163 flow [2023-08-03 18:11:56,478 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 18:11:56,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:56,478 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:56,493 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 18:11:56,684 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 18:11:56,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 18:11:56,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1647385841, now seen corresponding path program 1 times [2023-08-03 18:11:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277159211] [2023-08-03 18:11:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:56,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:56,738 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 18:11:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277159211] [2023-08-03 18:11:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277159211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:56,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186261998] [2023-08-03 18:11:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:56,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:56,745 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 18:11:56,749 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 18:11:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:56,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:11:56,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:56,873 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 18:11:56,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:11:56,888 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 18:11:56,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186261998] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:11:56,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:11:56,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:11:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581126805] [2023-08-03 18:11:56,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:11:56,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:11:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:11:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:56,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 281 [2023-08-03 18:11:56,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 163 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 18:11:56,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:56,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 281 [2023-08-03 18:11:56,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:12:11,099 INFO L124 PetriNetUnfolderBase]: 101266/129275 cut-off events. [2023-08-03 18:12:11,099 INFO L125 PetriNetUnfolderBase]: For 9534/9534 co-relation queries the response was YES. [2023-08-03 18:12:11,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268621 conditions, 129275 events. 101266/129275 cut-off events. For 9534/9534 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 747594 event pairs, 66420 based on Foata normal form. 3/129089 useless extension candidates. Maximal degree in co-relation 95325. Up to 127384 conditions per place. [2023-08-03 18:12:11,924 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 42 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-03 18:12:11,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 54 transitions, 261 flow [2023-08-03 18:12:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:12:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:12:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 608 transitions. [2023-08-03 18:12:11,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409252669039146 [2023-08-03 18:12:11,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 608 transitions. [2023-08-03 18:12:11,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 608 transitions. [2023-08-03 18:12:11,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:12:11,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 608 transitions. [2023-08-03 18:12:11,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 18:12:11,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:12:11,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:12:11,930 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 163 flow. Second operand 4 states and 608 transitions. [2023-08-03 18:12:11,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 54 transitions, 261 flow [2023-08-03 18:12:11,934 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 18:12:11,935 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 159 flow [2023-08-03 18:12:11,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, 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 18:12:11,936 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2023-08-03 18:12:11,936 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 159 flow [2023-08-03 18:12:11,937 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 18:12:11,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:12:11,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:12:11,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:12:12,139 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 18:12:12,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 18:12:12,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:12:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1965588033, now seen corresponding path program 1 times [2023-08-03 18:12:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:12:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818265475] [2023-08-03 18:12:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:12,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:12:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:12,226 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 18:12:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:12:12,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818265475] [2023-08-03 18:12:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818265475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:12:12,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571262309] [2023-08-03 18:12:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:12,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:12:12,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:12:12,229 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 18:12:12,232 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 18:12:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:12,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:12:12,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:12:12,370 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 18:12:12,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:12:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571262309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:12:12,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:12:12,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:12:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097633343] [2023-08-03 18:12:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:12:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:12:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:12:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:12:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:12:12,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 281 [2023-08-03 18:12:12,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 159 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 18:12:12,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:12:12,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 281 [2023-08-03 18:12:12,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:12:26,439 INFO L124 PetriNetUnfolderBase]: 100858/128584 cut-off events. [2023-08-03 18:12:26,440 INFO L125 PetriNetUnfolderBase]: For 8431/8431 co-relation queries the response was YES. [2023-08-03 18:12:26,885 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 3793. Compared 742310 event pairs, 31342 based on Foata normal form. 144/128539 useless extension candidates. Maximal degree in co-relation 94632. Up to 126018 conditions per place. [2023-08-03 18:12:27,268 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 57 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-03 18:12:27,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 327 flow [2023-08-03 18:12:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:12:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:12:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2023-08-03 18:12:27,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444839857651246 [2023-08-03 18:12:27,271 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2023-08-03 18:12:27,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2023-08-03 18:12:27,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:12:27,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2023-08-03 18:12:27,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:12:27,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:12:27,275 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:12:27,275 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 159 flow. Second operand 5 states and 765 transitions. [2023-08-03 18:12:27,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 327 flow [2023-08-03 18:12:27,282 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 18:12:27,283 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 171 flow [2023-08-03 18:12:27,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, 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 18:12:27,284 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2023-08-03 18:12:27,284 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 171 flow [2023-08-03 18:12:27,284 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 18:12:27,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:12:27,284 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 18:12:27,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 18:12:27,489 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 18:12:27,489 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 18:12:27,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:12:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash -63193635, now seen corresponding path program 1 times [2023-08-03 18:12:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:12:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661088053] [2023-08-03 18:12:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:12:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:27,553 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 18:12:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:12:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661088053] [2023-08-03 18:12:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661088053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:12:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962522129] [2023-08-03 18:12:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:27,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:12:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:12:27,555 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 18:12:27,561 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 18:12:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:27,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:12:27,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:12:27,873 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 18:12:27,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:12:27,886 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 18:12:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962522129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:12:27,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:12:27,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:12:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427618118] [2023-08-03 18:12:27,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:12:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:12:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:12:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:12:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:12:27,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 281 [2023-08-03 18:12:27,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 18:12:27,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:12:27,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 281 [2023-08-03 18:12:27,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:12:40,182 INFO L124 PetriNetUnfolderBase]: 83944/106234 cut-off events. [2023-08-03 18:12:40,182 INFO L125 PetriNetUnfolderBase]: For 7705/7705 co-relation queries the response was YES. [2023-08-03 18:12:40,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220618 conditions, 106234 events. 83944/106234 cut-off events. For 7705/7705 co-relation queries the response was YES. Maximal size of possible extension queue 3505. Compared 601246 event pairs, 52534 based on Foata normal form. 36/106117 useless extension candidates. Maximal degree in co-relation 78155. Up to 104044 conditions per place. [2023-08-03 18:12:40,993 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 18:12:40,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 311 flow [2023-08-03 18:12:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:12:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:12:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-08-03 18:12:40,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550711743772242 [2023-08-03 18:12:40,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-08-03 18:12:40,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-08-03 18:12:40,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:12:40,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-08-03 18:12:40,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 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 18:12:40,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:12:40,998 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:12:40,999 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 171 flow. Second operand 4 states and 619 transitions. [2023-08-03 18:12:40,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 311 flow [2023-08-03 18:12:41,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 306 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:12:41,005 INFO L231 Difference]: Finished difference. Result has 71 places, 46 transitions, 162 flow [2023-08-03 18:12:41,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=71, PETRI_TRANSITIONS=46} [2023-08-03 18:12:41,006 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2023-08-03 18:12:41,006 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions, 162 flow [2023-08-03 18:12:41,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 18:12:41,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:12:41,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:12:41,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 18:12:41,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:12:41,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 18:12:41,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:12:41,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1193164259, now seen corresponding path program 1 times [2023-08-03 18:12:41,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:12:41,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862041436] [2023-08-03 18:12:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:41,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:12:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:12:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:12:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862041436] [2023-08-03 18:12:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862041436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:12:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482727621] [2023-08-03 18:12:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:41,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:12:41,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:12:41,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:12:41,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:12:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:41,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:12:41,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:12:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:12:41,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:12:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:12:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482727621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:12:41,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:12:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:12:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331679054] [2023-08-03 18:12:41,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:12:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:12:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:12:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:12:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:12:41,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 281 [2023-08-03 18:12:41,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 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 18:12:41,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:12:41,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 281 [2023-08-03 18:12:41,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:12:51,866 INFO L124 PetriNetUnfolderBase]: 75688/95719 cut-off events. [2023-08-03 18:12:51,866 INFO L125 PetriNetUnfolderBase]: For 6004/6004 co-relation queries the response was YES. [2023-08-03 18:12:52,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199003 conditions, 95719 events. 75688/95719 cut-off events. For 6004/6004 co-relation queries the response was YES. Maximal size of possible extension queue 3263. Compared 522947 event pairs, 35320 based on Foata normal form. 576/96142 useless extension candidates. Maximal degree in co-relation 70438. Up to 62836 conditions per place. [2023-08-03 18:12:52,478 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 65 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-03 18:12:52,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 362 flow [2023-08-03 18:12:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:12:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:12:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-08-03 18:12:52,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622775800711743 [2023-08-03 18:12:52,480 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-08-03 18:12:52,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-08-03 18:12:52,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:12:52,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-08-03 18:12:52,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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 18:12:52,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:12:52,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:12:52,484 INFO L175 Difference]: Start difference. First operand has 71 places, 46 transitions, 162 flow. Second operand 4 states and 632 transitions. [2023-08-03 18:12:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 362 flow [2023-08-03 18:12:52,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:12:52,488 INFO L231 Difference]: Finished difference. Result has 73 places, 47 transitions, 176 flow [2023-08-03 18:12:52,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=4, PETRI_FLOW=176, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2023-08-03 18:12:52,489 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-08-03 18:12:52,489 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 176 flow [2023-08-03 18:12:52,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 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 18:12:52,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:12:52,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:12:52,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:12:52,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:12:52,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:12:52,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:12:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash -912172882, now seen corresponding path program 1 times [2023-08-03 18:12:52,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:12:52,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509432492] [2023-08-03 18:12:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:12:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:12:52,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:12:52,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509432492] [2023-08-03 18:12:52,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509432492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:12:52,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442333597] [2023-08-03 18:12:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:12:52,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:12:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:12:52,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:12:52,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:12:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:12:52,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:12:52,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:12:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:12:52,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:12:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442333597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:12:52,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:12:52,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:12:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025432536] [2023-08-03 18:12:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:12:52,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:12:52,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:12:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:12:52,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:12:52,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 281 [2023-08-03 18:12:52,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 176 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 18:12:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:12:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 281 [2023-08-03 18:12:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:13:02,059 INFO L124 PetriNetUnfolderBase]: 65704/82855 cut-off events. [2023-08-03 18:13:02,059 INFO L125 PetriNetUnfolderBase]: For 19780/19780 co-relation queries the response was YES. [2023-08-03 18:13:02,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181583 conditions, 82855 events. 65704/82855 cut-off events. For 19780/19780 co-relation queries the response was YES. Maximal size of possible extension queue 2683. Compared 436122 event pairs, 952 based on Foata normal form. 2304/85006 useless extension candidates. Maximal degree in co-relation 64119. Up to 61440 conditions per place. [2023-08-03 18:13:02,592 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 75 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-03 18:13:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 404 flow [2023-08-03 18:13:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:13:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:13:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2023-08-03 18:13:02,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565836298932384 [2023-08-03 18:13:02,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2023-08-03 18:13:02,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2023-08-03 18:13:02,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:13:02,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2023-08-03 18:13:02,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 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 18:13:02,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:13:02,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:13:02,599 INFO L175 Difference]: Start difference. First operand has 73 places, 47 transitions, 176 flow. Second operand 5 states and 782 transitions. [2023-08-03 18:13:02,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 404 flow [2023-08-03 18:13:02,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 397 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:13:02,674 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 165 flow [2023-08-03 18:13:02,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2023-08-03 18:13:02,675 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-08-03 18:13:02,675 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 165 flow [2023-08-03 18:13:02,676 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 18:13:02,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:13:02,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:13:02,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 18:13:02,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 18:13:02,881 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 18:13:02,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:13:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash -423962222, now seen corresponding path program 1 times [2023-08-03 18:13:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:13:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798371272] [2023-08-03 18:13:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:02,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:13:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:13:03,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:13:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798371272] [2023-08-03 18:13:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798371272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:13:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:13:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:13:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580976860] [2023-08-03 18:13:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:13:03,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:13:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:13:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:13:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:13:03,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:13:03,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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 18:13:03,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:13:03,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:13:03,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:13:14,096 INFO L124 PetriNetUnfolderBase]: 72136/91825 cut-off events. [2023-08-03 18:13:14,096 INFO L125 PetriNetUnfolderBase]: For 24703/24703 co-relation queries the response was YES. [2023-08-03 18:13:14,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197272 conditions, 91825 events. 72136/91825 cut-off events. For 24703/24703 co-relation queries the response was YES. Maximal size of possible extension queue 3110. Compared 510398 event pairs, 40399 based on Foata normal form. 2304/94120 useless extension candidates. Maximal degree in co-relation 69797. Up to 77662 conditions per place. [2023-08-03 18:13:14,661 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 59 selfloop transitions, 3 changer transitions 29/98 dead transitions. [2023-08-03 18:13:14,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 98 transitions, 500 flow [2023-08-03 18:13:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:13:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:13:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2023-08-03 18:13:14,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679715302491103 [2023-08-03 18:13:14,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2023-08-03 18:13:14,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2023-08-03 18:13:14,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:13:14,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2023-08-03 18:13:14,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 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 18:13:14,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:13:14,665 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:13:14,666 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 165 flow. Second operand 5 states and 798 transitions. [2023-08-03 18:13:14,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 98 transitions, 500 flow [2023-08-03 18:13:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:13:14,694 INFO L231 Difference]: Finished difference. Result has 77 places, 47 transitions, 187 flow [2023-08-03 18:13:14,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=47} [2023-08-03 18:13:14,695 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 18 predicate places. [2023-08-03 18:13:14,695 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 47 transitions, 187 flow [2023-08-03 18:13:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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 18:13:14,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:13:14,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:13:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 18:13:14,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 18:13:14,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:13:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1121418146, now seen corresponding path program 1 times [2023-08-03 18:13:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:13:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144592119] [2023-08-03 18:13:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:13:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:13:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:13:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144592119] [2023-08-03 18:13:14,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144592119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:13:14,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:13:14,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:13:14,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808957009] [2023-08-03 18:13:14,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:13:14,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:13:14,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:13:14,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:13:14,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:13:14,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 281 [2023-08-03 18:13:14,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 47 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 18:13:14,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:13:14,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 281 [2023-08-03 18:13:14,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:13:24,975 INFO L124 PetriNetUnfolderBase]: 69296/88719 cut-off events. [2023-08-03 18:13:24,975 INFO L125 PetriNetUnfolderBase]: For 42261/42261 co-relation queries the response was YES. [2023-08-03 18:13:25,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212360 conditions, 88719 events. 69296/88719 cut-off events. For 42261/42261 co-relation queries the response was YES. Maximal size of possible extension queue 2934. Compared 498565 event pairs, 49266 based on Foata normal form. 2160/90856 useless extension candidates. Maximal degree in co-relation 212280. Up to 72789 conditions per place. [2023-08-03 18:13:25,641 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 71 selfloop transitions, 3 changer transitions 31/112 dead transitions. [2023-08-03 18:13:25,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 624 flow [2023-08-03 18:13:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:13:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:13:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2023-08-03 18:13:25,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5850533807829181 [2023-08-03 18:13:25,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2023-08-03 18:13:25,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2023-08-03 18:13:25,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:13:25,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2023-08-03 18:13:25,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 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 18:13:25,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:13:25,648 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:13:25,648 INFO L175 Difference]: Start difference. First operand has 77 places, 47 transitions, 187 flow. Second operand 5 states and 822 transitions. [2023-08-03 18:13:25,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 624 flow [2023-08-03 18:13:26,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 617 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:13:26,294 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 209 flow [2023-08-03 18:13:26,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2023-08-03 18:13:26,294 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-08-03 18:13:26,294 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 209 flow [2023-08-03 18:13:26,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 18:13:26,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:13:26,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:13:26,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 18:13:26,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 18:13:26,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:13:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 830057624, now seen corresponding path program 1 times [2023-08-03 18:13:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:13:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244632322] [2023-08-03 18:13:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:13:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:13:26,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:13:26,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244632322] [2023-08-03 18:13:26,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244632322] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:13:26,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448931188] [2023-08-03 18:13:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:26,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:13:26,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:13:26,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:13:26,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 18:13:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:26,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 18:13:26,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:13:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:13:26,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:13:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448931188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:13:26,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:13:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-03 18:13:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316943181] [2023-08-03 18:13:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:13:26,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:13:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:13:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:13:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-03 18:13:26,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 281 [2023-08-03 18:13:26,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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 18:13:26,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:13:26,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 281 [2023-08-03 18:13:26,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:13:34,669 INFO L124 PetriNetUnfolderBase]: 55448/70089 cut-off events. [2023-08-03 18:13:34,670 INFO L125 PetriNetUnfolderBase]: For 58016/58016 co-relation queries the response was YES. [2023-08-03 18:13:34,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191696 conditions, 70089 events. 55448/70089 cut-off events. For 58016/58016 co-relation queries the response was YES. Maximal size of possible extension queue 2288. Compared 373623 event pairs, 11671 based on Foata normal form. 324/70360 useless extension candidates. Maximal degree in co-relation 166605. Up to 65268 conditions per place. [2023-08-03 18:13:35,189 INFO L140 encePairwiseOnDemand]: 273/281 looper letters, 71 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-08-03 18:13:35,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 524 flow [2023-08-03 18:13:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:13:35,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:13:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-03 18:13:35,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571767497034401 [2023-08-03 18:13:35,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-03 18:13:35,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-03 18:13:35,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:13:35,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-03 18:13:35,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 18:13:35,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:13:35,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:13:35,194 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 209 flow. Second operand 3 states and 482 transitions. [2023-08-03 18:13:35,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 524 flow [2023-08-03 18:13:35,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 517 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:13:35,229 INFO L231 Difference]: Finished difference. Result has 79 places, 55 transitions, 251 flow [2023-08-03 18:13:35,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2023-08-03 18:13:35,229 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2023-08-03 18:13:35,229 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 251 flow [2023-08-03 18:13:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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 18:13:35,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:13:35,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:13:35,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 18:13:35,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 18:13:35,431 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 18:13:35,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:13:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1379509053, now seen corresponding path program 1 times [2023-08-03 18:13:35,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:13:35,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004762946] [2023-08-03 18:13:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:13:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:13:35,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:13:35,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004762946] [2023-08-03 18:13:35,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004762946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:13:35,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109396493] [2023-08-03 18:13:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:35,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:13:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:13:35,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:13:35,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 18:13:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:35,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 18:13:35,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:13:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:13:36,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:13:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:13:36,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109396493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:13:36,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:13:36,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-03 18:13:36,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856344231] [2023-08-03 18:13:36,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:13:36,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 18:13:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:13:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 18:13:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-03 18:13:36,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-08-03 18:13:36,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 251 flow. Second operand has 9 states, 9 states have (on average 139.44444444444446) internal successors, (1255), 9 states have internal predecessors, (1255), 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 18:13:36,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:13:36,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-08-03 18:13:36,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:13:49,259 INFO L124 PetriNetUnfolderBase]: 92803/121331 cut-off events. [2023-08-03 18:13:49,259 INFO L125 PetriNetUnfolderBase]: For 123805/123805 co-relation queries the response was YES. [2023-08-03 18:13:49,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360758 conditions, 121331 events. 92803/121331 cut-off events. For 123805/123805 co-relation queries the response was YES. Maximal size of possible extension queue 3609. Compared 744078 event pairs, 3891 based on Foata normal form. 5599/126828 useless extension candidates. Maximal degree in co-relation 279555. Up to 37309 conditions per place. [2023-08-03 18:13:50,094 INFO L140 encePairwiseOnDemand]: 267/281 looper letters, 275 selfloop transitions, 73 changer transitions 76/429 dead transitions. [2023-08-03 18:13:50,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 429 transitions, 2708 flow [2023-08-03 18:13:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-03 18:13:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-03 18:13:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2498 transitions. [2023-08-03 18:13:50,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556049822064056 [2023-08-03 18:13:50,099 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2498 transitions. [2023-08-03 18:13:50,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2498 transitions. [2023-08-03 18:13:50,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:13:50,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2498 transitions. [2023-08-03 18:13:50,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 156.125) internal successors, (2498), 16 states have internal predecessors, (2498), 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 18:13:50,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 281.0) internal successors, (4777), 17 states have internal predecessors, (4777), 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 18:13:50,111 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 281.0) internal successors, (4777), 17 states have internal predecessors, (4777), 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 18:13:50,111 INFO L175 Difference]: Start difference. First operand has 79 places, 55 transitions, 251 flow. Second operand 16 states and 2498 transitions. [2023-08-03 18:13:50,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 429 transitions, 2708 flow [2023-08-03 18:13:50,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 429 transitions, 2691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:13:50,185 INFO L231 Difference]: Finished difference. Result has 106 places, 131 transitions, 917 flow [2023-08-03 18:13:50,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=917, PETRI_PLACES=106, PETRI_TRANSITIONS=131} [2023-08-03 18:13:50,186 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 47 predicate places. [2023-08-03 18:13:50,186 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 131 transitions, 917 flow [2023-08-03 18:13:50,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.44444444444446) internal successors, (1255), 9 states have internal predecessors, (1255), 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 18:13:50,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:13:50,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:13:50,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 18:13:50,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 18:13:50,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 18:13:50,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:13:50,395 INFO L85 PathProgramCache]: Analyzing trace with hash 568100318, now seen corresponding path program 1 times [2023-08-03 18:13:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:13:50,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172936177] [2023-08-03 18:13:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:13:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:13:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:13:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172936177] [2023-08-03 18:13:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172936177] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:13:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346220673] [2023-08-03 18:13:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:13:51,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:13:51,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:13:51,853 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:13:51,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 18:13:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:13:52,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-03 18:13:52,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:13:52,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 18:13:52,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-03 18:13:52,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-03 18:13:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:13:52,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:13:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:13:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346220673] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:13:53,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:13:53,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 9] total 20 [2023-08-03 18:13:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121579815] [2023-08-03 18:13:53,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:13:53,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-03 18:13:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:13:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-03 18:13:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-03 18:13:53,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 281 [2023-08-03 18:13:53,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 917 flow. Second operand has 22 states, 22 states have (on average 128.63636363636363) internal successors, (2830), 22 states have internal predecessors, (2830), 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 18:13:53,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:13:53,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 281 [2023-08-03 18:13:53,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:14:38,857 INFO L124 PetriNetUnfolderBase]: 235985/311586 cut-off events. [2023-08-03 18:14:38,857 INFO L125 PetriNetUnfolderBase]: For 1132449/1137266 co-relation queries the response was YES.