/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/weaver_popl20-more-min-le-max.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:41:35,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:41:35,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:41:35,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:41:35,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:41:35,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:41:35,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:41:35,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:41:35,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:41:35,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:41:35,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:41:35,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:41:35,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:41:35,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:41:35,584 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:41:35,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:41:35,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:41:35,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:41:35,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:41:35,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:41:35,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:41:35,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:41:35,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:41:35,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:41:35,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:41:35,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:41:35,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:41:35,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:41:35,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:41:35,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:41:35,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:41:35,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:41:35,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:41:35,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:41:35,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:41:35,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:41:35,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:41:35,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:41:35,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:41:35,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:41:35,589 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:41:35,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:41:35,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:41:35,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:41:35,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:41:35,780 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:41:35,781 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:41:35,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-min-le-max.wvr_bound2.c [2023-08-03 20:41:36,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:41:36,967 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:41:36,967 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-min-le-max.wvr_bound2.c [2023-08-03 20:41:36,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756ec2117/86eccc0dc936489bb812a540340d3fda/FLAGc26c1f8bb [2023-08-03 20:41:36,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756ec2117/86eccc0dc936489bb812a540340d3fda [2023-08-03 20:41:36,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:41:37,000 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:41:37,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:41:37,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:41:37,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:41:37,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:41:36" (1/1) ... [2023-08-03 20:41:37,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a983052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37, skipping insertion in model container [2023-08-03 20:41:37,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:41:36" (1/1) ... [2023-08-03 20:41:37,023 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:41:37,188 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-min-le-max.wvr_bound2.c[2729,2742] [2023-08-03 20:41:37,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:41:37,209 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:41:37,233 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-min-le-max.wvr_bound2.c[2729,2742] [2023-08-03 20:41:37,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:41:37,249 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:41:37,249 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:41:37,254 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:41:37,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37 WrapperNode [2023-08-03 20:41:37,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:41:37,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:41:37,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:41:37,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:41:37,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,305 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 154 [2023-08-03 20:41:37,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:41:37,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:41:37,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:41:37,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:41:37,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:41:37,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:41:37,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:41:37,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:41:37,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (1/1) ... [2023-08-03 20:41:37,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:41:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:41:37,368 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 20:41:37,371 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 20:41:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:41:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:41:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:41:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:41:37,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:41:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:41:37,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:41:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:41:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:41:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:41:37,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:41:37,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:41:37,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:41:37,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:41:37,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:41:37,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:41:37,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:41:37,407 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 20:41:37,476 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:41:37,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:41:37,700 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:41:37,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:41:37,735 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-03 20:41:37,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:41:37 BoogieIcfgContainer [2023-08-03 20:41:37,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:41:37,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:41:37,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:41:37,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:41:37,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:41:36" (1/3) ... [2023-08-03 20:41:37,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525ad1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:41:37, skipping insertion in model container [2023-08-03 20:41:37,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:41:37" (2/3) ... [2023-08-03 20:41:37,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525ad1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:41:37, skipping insertion in model container [2023-08-03 20:41:37,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:41:37" (3/3) ... [2023-08-03 20:41:37,742 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-more-min-le-max.wvr_bound2.c [2023-08-03 20:41:37,748 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:41:37,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:41:37,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:41:37,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:41:37,810 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:41:37,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 188 transitions, 418 flow [2023-08-03 20:41:38,018 INFO L124 PetriNetUnfolderBase]: 93/635 cut-off events. [2023-08-03 20:41:38,018 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:41:38,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 635 events. 93/635 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3047 event pairs, 0 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 353. Up to 16 conditions per place. [2023-08-03 20:41:38,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 188 transitions, 418 flow [2023-08-03 20:41:38,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 188 transitions, 418 flow [2023-08-03 20:41:38,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:41:38,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 188 transitions, 418 flow [2023-08-03 20:41:38,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 188 transitions, 418 flow [2023-08-03 20:41:38,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 188 transitions, 418 flow [2023-08-03 20:41:38,105 INFO L124 PetriNetUnfolderBase]: 93/635 cut-off events. [2023-08-03 20:41:38,105 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:41:38,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 635 events. 93/635 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3047 event pairs, 0 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 353. Up to 16 conditions per place. [2023-08-03 20:41:38,117 INFO L119 LiptonReduction]: Number of co-enabled transitions 4058 [2023-08-03 20:41:42,107 INFO L134 LiptonReduction]: Checked pairs total: 6670 [2023-08-03 20:41:42,107 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-03 20:41:42,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:41:42,121 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;@1cf46dd0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:41:42,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:41:42,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:41:42,125 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2023-08-03 20:41:42,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:41:42,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:42,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 20:41:42,126 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 20:41:42,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -974613038, now seen corresponding path program 1 times [2023-08-03 20:41:42,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312916619] [2023-08-03 20:41:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:42,408 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 20:41:42,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:41:42,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312916619] [2023-08-03 20:41:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312916619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:41:42,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:41:42,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:41:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75491355] [2023-08-03 20:41:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:41:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:41:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:41:42,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:41:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:41:42,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 352 [2023-08-03 20:41:42,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 20:41:42,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:41:42,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 352 [2023-08-03 20:41:42,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:41:42,628 INFO L124 PetriNetUnfolderBase]: 1442/2185 cut-off events. [2023-08-03 20:41:42,628 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 20:41:42,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 2185 events. 1442/2185 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11025 event pairs, 737 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 3442. Up to 2049 conditions per place. [2023-08-03 20:41:42,638 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 37 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 20:41:42,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 214 flow [2023-08-03 20:41:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:41:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:41:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-03 20:41:42,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2023-08-03 20:41:42,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-03 20:41:42,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-03 20:41:42,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:41:42,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-03 20:41:42,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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 20:41:42,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 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 20:41:42,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 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 20:41:42,661 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 136 flow. Second operand 3 states and 506 transitions. [2023-08-03 20:41:42,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 214 flow [2023-08-03 20:41:42,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:41:42,666 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 146 flow [2023-08-03 20:41:42,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=146, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-03 20:41:42,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-03 20:41:42,670 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 146 flow [2023-08-03 20:41:42,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 20:41:42,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:42,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:41:42,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:41:42,671 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 20:41:42,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1012811841, now seen corresponding path program 1 times [2023-08-03 20:41:42,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:42,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783709545] [2023-08-03 20:41:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:41:42,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:41:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:41:42,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:41:42,738 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:41:42,739 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:41:42,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:41:42,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:41:42,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:41:42,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:41:42,742 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:41:42,743 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:41:42,743 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:41:42,761 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:41:42,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 223 transitions, 536 flow [2023-08-03 20:41:43,134 INFO L124 PetriNetUnfolderBase]: 855/4026 cut-off events. [2023-08-03 20:41:43,134 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:41:43,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 4026 events. 855/4026 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31992 event pairs, 33 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 2382. Up to 192 conditions per place. [2023-08-03 20:41:43,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 223 transitions, 536 flow [2023-08-03 20:41:43,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 223 transitions, 536 flow [2023-08-03 20:41:43,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:41:43,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 223 transitions, 536 flow [2023-08-03 20:41:43,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 223 transitions, 536 flow [2023-08-03 20:41:43,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 223 transitions, 536 flow [2023-08-03 20:41:43,464 INFO L124 PetriNetUnfolderBase]: 855/4026 cut-off events. [2023-08-03 20:41:43,464 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:41:43,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 4026 events. 855/4026 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31992 event pairs, 33 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 2382. Up to 192 conditions per place. [2023-08-03 20:41:43,531 INFO L119 LiptonReduction]: Number of co-enabled transitions 10168 [2023-08-03 20:41:47,686 INFO L134 LiptonReduction]: Checked pairs total: 22285 [2023-08-03 20:41:47,687 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-03 20:41:47,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:41:47,689 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;@1cf46dd0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:41:47,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:41:47,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:41:47,691 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2023-08-03 20:41:47,691 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:41:47,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:47,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:41:47,692 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 20:41:47,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash -633402414, now seen corresponding path program 1 times [2023-08-03 20:41:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:47,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030729051] [2023-08-03 20:41:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:47,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:47,730 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 20:41:47,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:41:47,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030729051] [2023-08-03 20:41:47,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030729051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:41:47,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:41:47,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:41:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493354250] [2023-08-03 20:41:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:41:47,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:41:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:41:47,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:41:47,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:41:47,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 407 [2023-08-03 20:41:47,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 20:41:47,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:41:47,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 407 [2023-08-03 20:41:47,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:41:57,016 INFO L124 PetriNetUnfolderBase]: 129355/160787 cut-off events. [2023-08-03 20:41:57,016 INFO L125 PetriNetUnfolderBase]: For 20970/20970 co-relation queries the response was YES. [2023-08-03 20:41:57,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329112 conditions, 160787 events. 129355/160787 cut-off events. For 20970/20970 co-relation queries the response was YES. Maximal size of possible extension queue 3422. Compared 842164 event pairs, 61282 based on Foata normal form. 0/101053 useless extension candidates. Maximal degree in co-relation 105472. Up to 154988 conditions per place. [2023-08-03 20:41:57,763 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 57 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-03 20:41:57,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 352 flow [2023-08-03 20:41:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:41:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:41:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-03 20:41:57,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799344799344799 [2023-08-03 20:41:57,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-03 20:41:57,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-03 20:41:57,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:41:57,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-03 20:41:57,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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 20:41:57,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:41:57,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:41:57,772 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 228 flow. Second operand 3 states and 586 transitions. [2023-08-03 20:41:57,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 352 flow [2023-08-03 20:41:57,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:41:57,785 INFO L231 Difference]: Finished difference. Result has 61 places, 69 transitions, 238 flow [2023-08-03 20:41:57,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=61, PETRI_TRANSITIONS=69} [2023-08-03 20:41:57,786 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2023-08-03 20:41:57,786 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 69 transitions, 238 flow [2023-08-03 20:41:57,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 20:41:57,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:57,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 20:41:57,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 20:41:57,786 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 20:41:57,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:57,787 INFO L85 PathProgramCache]: Analyzing trace with hash 20928726, now seen corresponding path program 1 times [2023-08-03 20:41:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:57,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309222341] [2023-08-03 20:41:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:57,843 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 20:41:57,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:41:57,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309222341] [2023-08-03 20:41:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309222341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:41:57,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002178631] [2023-08-03 20:41:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:57,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:41:57,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:41:57,861 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 20:41:57,864 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 20:41:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:57,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:41:57,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:41:57,989 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 20:41:57,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:41:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002178631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:41:57,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:41:57,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:41:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619468182] [2023-08-03 20:41:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:41:57,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:41:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:41:57,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:41:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:41:58,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:41:58,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 69 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 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 20:41:58,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:41:58,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:41:58,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:07,272 INFO L124 PetriNetUnfolderBase]: 129305/160743 cut-off events. [2023-08-03 20:42:07,272 INFO L125 PetriNetUnfolderBase]: For 21042/21042 co-relation queries the response was YES. [2023-08-03 20:42:07,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329022 conditions, 160743 events. 129305/160743 cut-off events. For 21042/21042 co-relation queries the response was YES. Maximal size of possible extension queue 3450. Compared 840544 event pairs, 48329 based on Foata normal form. 9/101044 useless extension candidates. Maximal degree in co-relation 192847. Up to 154890 conditions per place. [2023-08-03 20:42:08,065 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 60 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-03 20:42:08,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 378 flow [2023-08-03 20:42:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:42:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:42:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 935 transitions. [2023-08-03 20:42:08,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-08-03 20:42:08,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 935 transitions. [2023-08-03 20:42:08,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 935 transitions. [2023-08-03 20:42:08,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:08,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 935 transitions. [2023-08-03 20:42:08,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 20:42:08,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:42:08,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:42:08,074 INFO L175 Difference]: Start difference. First operand has 61 places, 69 transitions, 238 flow. Second operand 5 states and 935 transitions. [2023-08-03 20:42:08,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 378 flow [2023-08-03 20:42:08,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 368 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:42:08,091 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 243 flow [2023-08-03 20:42:08,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2023-08-03 20:42:08,093 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2023-08-03 20:42:08,093 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 243 flow [2023-08-03 20:42:08,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 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 20:42:08,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:08,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:08,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 20:42:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:08,298 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 20:42:08,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1874582069, now seen corresponding path program 1 times [2023-08-03 20:42:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905804700] [2023-08-03 20:42:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:08,338 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 20:42:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905804700] [2023-08-03 20:42:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905804700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:42:08,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:42:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:42:08,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170059376] [2023-08-03 20:42:08,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:42:08,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:42:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:42:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:42:08,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 407 [2023-08-03 20:42:08,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 20:42:08,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:08,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 407 [2023-08-03 20:42:08,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:17,015 INFO L124 PetriNetUnfolderBase]: 128517/159955 cut-off events. [2023-08-03 20:42:17,015 INFO L125 PetriNetUnfolderBase]: For 16329/16329 co-relation queries the response was YES. [2023-08-03 20:42:17,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325652 conditions, 159955 events. 128517/159955 cut-off events. For 16329/16329 co-relation queries the response was YES. Maximal size of possible extension queue 3540. Compared 862179 event pairs, 60948 based on Foata normal form. 0/100455 useless extension candidates. Maximal degree in co-relation 108413. Up to 153728 conditions per place. [2023-08-03 20:42:17,977 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 62 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-03 20:42:17,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 389 flow [2023-08-03 20:42:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:42:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:42:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-08-03 20:42:17,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823914823914824 [2023-08-03 20:42:17,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-08-03 20:42:17,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-08-03 20:42:17,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:17,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-08-03 20:42:17,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 20:42:17,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:42:17,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:42:17,983 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 243 flow. Second operand 3 states and 589 transitions. [2023-08-03 20:42:17,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 389 flow [2023-08-03 20:42:17,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 382 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:42:17,991 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 251 flow [2023-08-03 20:42:17,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-03 20:42:17,992 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2023-08-03 20:42:17,992 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 251 flow [2023-08-03 20:42:17,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 20:42:17,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:17,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:17,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 20:42:17,993 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 20:42:17,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash -193899895, now seen corresponding path program 1 times [2023-08-03 20:42:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:17,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759516823] [2023-08-03 20:42:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:18,048 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 20:42:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759516823] [2023-08-03 20:42:18,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759516823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:42:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583077785] [2023-08-03 20:42:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:18,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:42:18,050 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 20:42:18,053 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 20:42:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:18,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:42:18,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:42:18,128 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 20:42:18,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:42:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583077785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:42:18,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:42:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:42:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223700427] [2023-08-03 20:42:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:42:18,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:42:18,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:42:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:42:18,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 407 [2023-08-03 20:42:18,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 20:42:18,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:18,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 407 [2023-08-03 20:42:18,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:26,758 INFO L124 PetriNetUnfolderBase]: 128373/160555 cut-off events. [2023-08-03 20:42:26,758 INFO L125 PetriNetUnfolderBase]: For 11643/11643 co-relation queries the response was YES. [2023-08-03 20:42:27,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326375 conditions, 160555 events. 128373/160555 cut-off events. For 11643/11643 co-relation queries the response was YES. Maximal size of possible extension queue 3981. Compared 878474 event pairs, 57942 based on Foata normal form. 0/101495 useless extension candidates. Maximal degree in co-relation 108788. Up to 150492 conditions per place. [2023-08-03 20:42:27,503 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 67 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-03 20:42:27,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 411 flow [2023-08-03 20:42:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:42:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:42:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-03 20:42:27,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-03 20:42:27,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-03 20:42:27,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-03 20:42:27,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:27,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-03 20:42:27,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:27,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:42:27,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:42:27,509 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 251 flow. Second operand 3 states and 592 transitions. [2023-08-03 20:42:27,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 411 flow [2023-08-03 20:42:27,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:42:27,515 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 260 flow [2023-08-03 20:42:27,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-08-03 20:42:27,515 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2023-08-03 20:42:27,515 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 260 flow [2023-08-03 20:42:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 20:42:27,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:27,516 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:27,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 20:42:27,720 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,SelfDestructingSolverStorable5 [2023-08-03 20:42:27,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 20:42:27,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 213423438, now seen corresponding path program 1 times [2023-08-03 20:42:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:27,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900711074] [2023-08-03 20:42:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:27,765 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 20:42:27,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900711074] [2023-08-03 20:42:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900711074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:42:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249143995] [2023-08-03 20:42:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:42:27,767 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 20:42:27,770 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 20:42:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:28,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:42:28,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:42:28,035 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 20:42:28,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:42:28,050 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 20:42:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249143995] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:42:28,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:42:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:42:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11827204] [2023-08-03 20:42:28,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:42:28,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:42:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:42:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:42:28,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:42:28,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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 20:42:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:42:28,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:36,607 INFO L124 PetriNetUnfolderBase]: 124757/155850 cut-off events. [2023-08-03 20:42:36,608 INFO L125 PetriNetUnfolderBase]: For 12937/12937 co-relation queries the response was YES. [2023-08-03 20:42:36,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318277 conditions, 155850 events. 124757/155850 cut-off events. For 12937/12937 co-relation queries the response was YES. Maximal size of possible extension queue 3920. Compared 846916 event pairs, 47301 based on Foata normal form. 3/99243 useless extension candidates. Maximal degree in co-relation 98540. Up to 149283 conditions per place. [2023-08-03 20:42:37,473 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 62 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-03 20:42:37,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 398 flow [2023-08-03 20:42:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:42:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:42:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-08-03 20:42:37,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2023-08-03 20:42:37,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-08-03 20:42:37,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-08-03 20:42:37,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:37,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-08-03 20:42:37,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 20:42:37,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:42:37,490 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:42:37,490 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 260 flow. Second operand 4 states and 760 transitions. [2023-08-03 20:42:37,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 398 flow [2023-08-03 20:42:37,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:42:37,500 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 256 flow [2023-08-03 20:42:37,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-03 20:42:37,501 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-08-03 20:42:37,501 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 256 flow [2023-08-03 20:42:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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 20:42:37,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:37,501 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:37,509 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 20:42:37,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:37,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 20:42:37,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash -173249260, now seen corresponding path program 1 times [2023-08-03 20:42:37,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:37,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407280211] [2023-08-03 20:42:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:37,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:37,765 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 20:42:37,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407280211] [2023-08-03 20:42:37,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407280211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:42:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460361702] [2023-08-03 20:42:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:37,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:42:37,781 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 20:42:37,783 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 20:42:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:37,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:42:37,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:42:37,882 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 20:42:37,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:42:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460361702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:42:37,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:42:37,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:42:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971921279] [2023-08-03 20:42:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:42:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:42:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:42:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:42:37,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:42:37,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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 20:42:37,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:37,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:42:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:46,136 INFO L124 PetriNetUnfolderBase]: 124325/155337 cut-off events. [2023-08-03 20:42:46,136 INFO L125 PetriNetUnfolderBase]: For 12501/12501 co-relation queries the response was YES. [2023-08-03 20:42:46,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316990 conditions, 155337 events. 124325/155337 cut-off events. For 12501/12501 co-relation queries the response was YES. Maximal size of possible extension queue 3887. Compared 843177 event pairs, 22543 based on Foata normal form. 81/98997 useless extension candidates. Maximal degree in co-relation 133280. Up to 148038 conditions per place. [2023-08-03 20:42:47,034 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 74 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-03 20:42:47,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 450 flow [2023-08-03 20:42:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:42:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:42:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 947 transitions. [2023-08-03 20:42:47,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46535626535626534 [2023-08-03 20:42:47,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 947 transitions. [2023-08-03 20:42:47,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 947 transitions. [2023-08-03 20:42:47,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:47,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 947 transitions. [2023-08-03 20:42:47,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.4) internal successors, (947), 5 states have internal predecessors, (947), 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 20:42:47,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:42:47,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:42:47,041 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 256 flow. Second operand 5 states and 947 transitions. [2023-08-03 20:42:47,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 450 flow [2023-08-03 20:42:47,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:42:47,051 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 259 flow [2023-08-03 20:42:47,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-03 20:42:47,052 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-08-03 20:42:47,052 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 259 flow [2023-08-03 20:42:47,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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 20:42:47,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:47,052 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, 1] [2023-08-03 20:42:47,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 20:42:47,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:47,256 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 20:42:47,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2130315274, now seen corresponding path program 1 times [2023-08-03 20:42:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181513054] [2023-08-03 20:42:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:47,314 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 20:42:47,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:47,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181513054] [2023-08-03 20:42:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181513054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:42:47,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573052288] [2023-08-03 20:42:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:47,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:47,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:42:47,316 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 20:42:47,318 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 20:42:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:47,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:42:47,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:42:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:42:47,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:42:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573052288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:42:47,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:42:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:42:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773558314] [2023-08-03 20:42:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:42:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:42:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:42:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:42:47,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 407 [2023-08-03 20:42:47,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 20:42:47,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:47,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 407 [2023-08-03 20:42:47,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:55,050 INFO L124 PetriNetUnfolderBase]: 110501/138624 cut-off events. [2023-08-03 20:42:55,050 INFO L125 PetriNetUnfolderBase]: For 10013/10013 co-relation queries the response was YES. [2023-08-03 20:42:55,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282404 conditions, 138624 events. 110501/138624 cut-off events. For 10013/10013 co-relation queries the response was YES. Maximal size of possible extension queue 3742. Compared 756517 event pairs, 49906 based on Foata normal form. 0/88386 useless extension candidates. Maximal degree in co-relation 121802. Up to 116459 conditions per place. [2023-08-03 20:42:55,780 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 75 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-03 20:42:55,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 463 flow [2023-08-03 20:42:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:42:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:42:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-03 20:42:55,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905814905814906 [2023-08-03 20:42:55,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-03 20:42:55,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-03 20:42:55,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:55,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-03 20:42:55,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 20:42:55,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:42:55,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:42:55,800 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 259 flow. Second operand 3 states and 599 transitions. [2023-08-03 20:42:55,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 463 flow [2023-08-03 20:42:55,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 456 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:42:55,811 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 264 flow [2023-08-03 20:42:55,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-08-03 20:42:55,813 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2023-08-03 20:42:55,813 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 264 flow [2023-08-03 20:42:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 20:42:55,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:55,814 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:55,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 20:42:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:56,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 20:42:56,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2113904225, now seen corresponding path program 1 times [2023-08-03 20:42:56,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:56,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660115249] [2023-08-03 20:42:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:42:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660115249] [2023-08-03 20:42:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660115249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:42:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670035373] [2023-08-03 20:42:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:56,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:42:56,081 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 20:42:56,083 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 20:42:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:56,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:42:56,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:42:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:42:56,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:42:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:42:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670035373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:42:56,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:42:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:42:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757594884] [2023-08-03 20:42:56,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:42:56,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:42:56,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:42:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:42:56,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:42:56,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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 20:42:56,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:56,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:42:56,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:03,814 INFO L124 PetriNetUnfolderBase]: 105236/131874 cut-off events. [2023-08-03 20:43:03,815 INFO L125 PetriNetUnfolderBase]: For 13187/13187 co-relation queries the response was YES. [2023-08-03 20:43:04,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274017 conditions, 131874 events. 105236/131874 cut-off events. For 13187/13187 co-relation queries the response was YES. Maximal size of possible extension queue 3791. Compared 728985 event pairs, 40489 based on Foata normal form. 27/85776 useless extension candidates. Maximal degree in co-relation 120386. Up to 125966 conditions per place. [2023-08-03 20:43:04,625 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 71 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-03 20:43:04,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 436 flow [2023-08-03 20:43:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:43:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:43:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 768 transitions. [2023-08-03 20:43:04,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2023-08-03 20:43:04,627 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 768 transitions. [2023-08-03 20:43:04,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 768 transitions. [2023-08-03 20:43:04,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:04,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 768 transitions. [2023-08-03 20:43:04,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 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 20:43:04,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:04,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:04,631 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 264 flow. Second operand 4 states and 768 transitions. [2023-08-03 20:43:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 436 flow [2023-08-03 20:43:04,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:43:04,708 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 260 flow [2023-08-03 20:43:04,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-03 20:43:04,709 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2023-08-03 20:43:04,709 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 260 flow [2023-08-03 20:43:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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 20:43:04,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:04,710 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:04,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 20:43:04,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:04,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 20:43:04,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash 818050428, now seen corresponding path program 1 times [2023-08-03 20:43:04,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656330841] [2023-08-03 20:43:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:04,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:05,052 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 20:43:05,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:05,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656330841] [2023-08-03 20:43:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656330841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:05,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400833318] [2023-08-03 20:43:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:05,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:05,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:05,054 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 20:43:05,093 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 20:43:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:05,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:43:05,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:05,237 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 20:43:05,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:43:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400833318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:43:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:43:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:43:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837898771] [2023-08-03 20:43:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:43:05,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:43:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:43:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:43:05,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:43:05,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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 20:43:05,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:05,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:43:05,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:12,408 INFO L124 PetriNetUnfolderBase]: 103184/129336 cut-off events. [2023-08-03 20:43:12,408 INFO L125 PetriNetUnfolderBase]: For 10994/10994 co-relation queries the response was YES. [2023-08-03 20:43:12,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267807 conditions, 129336 events. 103184/129336 cut-off events. For 10994/10994 co-relation queries the response was YES. Maximal size of possible extension queue 3791. Compared 697006 event pairs, 2011 based on Foata normal form. 324/84399 useless extension candidates. Maximal degree in co-relation 118496. Up to 116556 conditions per place. [2023-08-03 20:43:13,006 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 84 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-08-03 20:43:13,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 492 flow [2023-08-03 20:43:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:43:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:43:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 956 transitions. [2023-08-03 20:43:13,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697788697788698 [2023-08-03 20:43:13,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 956 transitions. [2023-08-03 20:43:13,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 956 transitions. [2023-08-03 20:43:13,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:13,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 956 transitions. [2023-08-03 20:43:13,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.2) internal successors, (956), 5 states have internal predecessors, (956), 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 20:43:13,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:43:13,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:43:13,033 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 260 flow. Second operand 5 states and 956 transitions. [2023-08-03 20:43:13,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 492 flow [2023-08-03 20:43:13,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 478 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:43:13,095 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 263 flow [2023-08-03 20:43:13,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-03 20:43:13,096 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2023-08-03 20:43:13,096 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 263 flow [2023-08-03 20:43:13,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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 20:43:13,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:13,097 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, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:13,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 20:43:13,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:13,301 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 20:43:13,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash 515167884, now seen corresponding path program 1 times [2023-08-03 20:43:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350664203] [2023-08-03 20:43:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:13,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:43:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350664203] [2023-08-03 20:43:13,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350664203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185228750] [2023-08-03 20:43:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:13,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:13,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:13,391 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 20:43:13,401 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 20:43:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:13,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:43:13,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:43:13,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:43:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185228750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:43:13,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:43:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:43:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192222495] [2023-08-03 20:43:13,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:43:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:43:13,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:43:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:43:13,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 407 [2023-08-03 20:43:13,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 20:43:13,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:13,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 407 [2023-08-03 20:43:13,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:20,366 INFO L124 PetriNetUnfolderBase]: 97592/123456 cut-off events. [2023-08-03 20:43:20,366 INFO L125 PetriNetUnfolderBase]: For 13415/13415 co-relation queries the response was YES. [2023-08-03 20:43:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255925 conditions, 123456 events. 97592/123456 cut-off events. For 13415/13415 co-relation queries the response was YES. Maximal size of possible extension queue 3134. Compared 680451 event pairs, 39979 based on Foata normal form. 0/81579 useless extension candidates. Maximal degree in co-relation 117503. Up to 89549 conditions per place. [2023-08-03 20:43:21,025 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 76 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-03 20:43:21,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 467 flow [2023-08-03 20:43:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:43:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:43:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-03 20:43:21,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905814905814906 [2023-08-03 20:43:21,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-03 20:43:21,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-03 20:43:21,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:21,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-03 20:43:21,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 20:43:21,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:43:21,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:43:21,030 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 263 flow. Second operand 3 states and 599 transitions. [2023-08-03 20:43:21,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 467 flow [2023-08-03 20:43:21,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 460 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:43:21,059 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 268 flow [2023-08-03 20:43:21,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2023-08-03 20:43:21,059 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 13 predicate places. [2023-08-03 20:43:21,059 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 268 flow [2023-08-03 20:43:21,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 20:43:21,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:21,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:21,067 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 20:43:21,264 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,SelfDestructingSolverStorable11 [2023-08-03 20:43:21,265 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 20:43:21,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -21303740, now seen corresponding path program 1 times [2023-08-03 20:43:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:21,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442472625] [2023-08-03 20:43:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:43:21,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:21,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442472625] [2023-08-03 20:43:21,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442472625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:21,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111924079] [2023-08-03 20:43:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:21,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:21,321 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 20:43:21,323 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 20:43:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:21,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:43:21,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:43:21,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:43:21,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111924079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:43:21,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:43:21,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:43:21,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823246807] [2023-08-03 20:43:21,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:43:21,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:43:21,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:43:21,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:43:21,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 407 [2023-08-03 20:43:21,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 20:43:21,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:21,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 407 [2023-08-03 20:43:21,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:28,465 INFO L124 PetriNetUnfolderBase]: 97657/124028 cut-off events. [2023-08-03 20:43:28,466 INFO L125 PetriNetUnfolderBase]: For 15479/15479 co-relation queries the response was YES. [2023-08-03 20:43:28,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262782 conditions, 124028 events. 97657/124028 cut-off events. For 15479/15479 co-relation queries the response was YES. Maximal size of possible extension queue 2955. Compared 688382 event pairs, 46928 based on Foata normal form. 0/84064 useless extension candidates. Maximal degree in co-relation 122921. Up to 104236 conditions per place. [2023-08-03 20:43:29,287 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 77 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-08-03 20:43:29,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 474 flow [2023-08-03 20:43:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:43:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:43:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-03 20:43:29,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905814905814906 [2023-08-03 20:43:29,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-03 20:43:29,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-03 20:43:29,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:29,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-03 20:43:29,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 20:43:29,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:43:29,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:43:29,292 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 268 flow. Second operand 3 states and 599 transitions. [2023-08-03 20:43:29,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 474 flow [2023-08-03 20:43:31,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:43:31,061 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 278 flow [2023-08-03 20:43:31,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2023-08-03 20:43:31,062 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2023-08-03 20:43:31,062 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 278 flow [2023-08-03 20:43:31,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 20:43:31,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:31,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:31,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 20:43:31,267 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 20:43:31,267 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 20:43:31,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2042218084, now seen corresponding path program 1 times [2023-08-03 20:43:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:31,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207167591] [2023-08-03 20:43:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:43:31,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:31,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207167591] [2023-08-03 20:43:31,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207167591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:31,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389952743] [2023-08-03 20:43:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:31,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:31,339 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 20:43:31,355 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 20:43:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:31,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:43:31,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:43:31,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:43:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:43:31,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389952743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:43:31,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:43:31,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:43:31,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518960824] [2023-08-03 20:43:31,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:43:31,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:43:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:43:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:43:31,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:43:31,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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 20:43:31,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:31,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:43:31,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:38,375 INFO L124 PetriNetUnfolderBase]: 94066/119519 cut-off events. [2023-08-03 20:43:38,375 INFO L125 PetriNetUnfolderBase]: For 13478/13478 co-relation queries the response was YES. [2023-08-03 20:43:38,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254698 conditions, 119519 events. 94066/119519 cut-off events. For 13478/13478 co-relation queries the response was YES. Maximal size of possible extension queue 3116. Compared 656305 event pairs, 37682 based on Foata normal form. 162/81724 useless extension candidates. Maximal degree in co-relation 205590. Up to 108400 conditions per place. [2023-08-03 20:43:39,006 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 78 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-03 20:43:39,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 474 flow [2023-08-03 20:43:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:43:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:43:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 773 transitions. [2023-08-03 20:43:39,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748157248157248 [2023-08-03 20:43:39,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 773 transitions. [2023-08-03 20:43:39,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 773 transitions. [2023-08-03 20:43:39,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:39,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 773 transitions. [2023-08-03 20:43:39,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 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 20:43:39,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:39,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:39,011 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 278 flow. Second operand 4 states and 773 transitions. [2023-08-03 20:43:39,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 474 flow [2023-08-03 20:43:41,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:43:41,449 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 274 flow [2023-08-03 20:43:41,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2023-08-03 20:43:41,449 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 17 predicate places. [2023-08-03 20:43:41,449 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 274 flow [2023-08-03 20:43:41,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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 20:43:41,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:41,450 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:41,456 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 20:43:41,654 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 20:43:41,656 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 20:43:41,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash -20640491, now seen corresponding path program 1 times [2023-08-03 20:43:41,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:41,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408558673] [2023-08-03 20:43:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:41,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:43:41,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408558673] [2023-08-03 20:43:41,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408558673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028491919] [2023-08-03 20:43:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:41,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:41,749 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 20:43:41,750 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 20:43:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:41,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:43:41,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:43:41,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:43:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:43:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028491919] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:43:41,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:43:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:43:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161521091] [2023-08-03 20:43:41,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:43:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:43:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:43:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:43:41,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:43:41,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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 20:43:41,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:41,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:43:41,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:46,422 INFO L124 PetriNetUnfolderBase]: 60737/77488 cut-off events. [2023-08-03 20:43:46,422 INFO L125 PetriNetUnfolderBase]: For 11156/11156 co-relation queries the response was YES. [2023-08-03 20:43:46,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165309 conditions, 77488 events. 60737/77488 cut-off events. For 11156/11156 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 402327 event pairs, 18132 based on Foata normal form. 756/53367 useless extension candidates. Maximal degree in co-relation 151660. Up to 41650 conditions per place. [2023-08-03 20:43:46,785 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 85 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-03 20:43:46,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 520 flow [2023-08-03 20:43:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:43:46,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:43:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 781 transitions. [2023-08-03 20:43:46,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2023-08-03 20:43:46,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 781 transitions. [2023-08-03 20:43:46,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 781 transitions. [2023-08-03 20:43:46,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:46,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 781 transitions. [2023-08-03 20:43:46,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:46,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:46,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:46,790 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 274 flow. Second operand 4 states and 781 transitions. [2023-08-03 20:43:46,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 520 flow [2023-08-03 20:43:47,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 514 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:43:47,388 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 288 flow [2023-08-03 20:43:47,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-03 20:43:47,388 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 19 predicate places. [2023-08-03 20:43:47,388 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 288 flow [2023-08-03 20:43:47,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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 20:43:47,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:47,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:47,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 20:43:47,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 20:43:47,594 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 20:43:47,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash -733906681, now seen corresponding path program 1 times [2023-08-03 20:43:47,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:47,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147069925] [2023-08-03 20:43:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:43:47,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147069925] [2023-08-03 20:43:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147069925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917391165] [2023-08-03 20:43:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:47,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:47,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:47,815 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:43:47,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 20:43:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:47,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:43:47,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:43:47,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:43:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:43:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917391165] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:43:47,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:43:47,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:43:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983025757] [2023-08-03 20:43:47,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:43:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:43:47,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:43:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:43:47,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:43:47,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 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 20:43:47,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:47,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:43:47,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:52,227 INFO L124 PetriNetUnfolderBase]: 57175/72743 cut-off events. [2023-08-03 20:43:52,227 INFO L125 PetriNetUnfolderBase]: For 19926/19926 co-relation queries the response was YES. [2023-08-03 20:43:52,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162755 conditions, 72743 events. 57175/72743 cut-off events. For 19926/19926 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 371128 event pairs, 24135 based on Foata normal form. 495/49745 useless extension candidates. Maximal degree in co-relation 160451. Up to 50108 conditions per place. [2023-08-03 20:43:52,786 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 86 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-08-03 20:43:52,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 536 flow [2023-08-03 20:43:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:43:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:43:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 781 transitions. [2023-08-03 20:43:52,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2023-08-03 20:43:52,788 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 781 transitions. [2023-08-03 20:43:52,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 781 transitions. [2023-08-03 20:43:52,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:52,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 781 transitions. [2023-08-03 20:43:52,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:52,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:52,792 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:52,792 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 288 flow. Second operand 4 states and 781 transitions. [2023-08-03 20:43:52,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 536 flow [2023-08-03 20:43:53,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 100 transitions, 532 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:43:53,351 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 304 flow [2023-08-03 20:43:53,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2023-08-03 20:43:53,351 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 23 predicate places. [2023-08-03 20:43:53,352 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 304 flow [2023-08-03 20:43:53,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 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 20:43:53,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:53,352 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:53,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 20:43:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 20:43:53,553 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 20:43:53,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -305580624, now seen corresponding path program 1 times [2023-08-03 20:43:53,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:53,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621822142] [2023-08-03 20:43:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:53,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:43:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621822142] [2023-08-03 20:43:53,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621822142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788424996] [2023-08-03 20:43:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:53,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:53,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:53,655 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:43:53,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 20:43:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:53,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:43:53,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:43:53,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:43:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:43:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788424996] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:43:53,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:43:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:43:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131355369] [2023-08-03 20:43:53,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:43:53,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:43:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:43:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:43:53,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:43:53,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 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 20:43:53,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:53,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:43:53,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:58,418 INFO L124 PetriNetUnfolderBase]: 57157/72710 cut-off events. [2023-08-03 20:43:58,419 INFO L125 PetriNetUnfolderBase]: For 20748/20748 co-relation queries the response was YES. [2023-08-03 20:43:58,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166404 conditions, 72710 events. 57157/72710 cut-off events. For 20748/20748 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 371596 event pairs, 31845 based on Foata normal form. 17/49242 useless extension candidates. Maximal degree in co-relation 164057. Up to 68837 conditions per place. [2023-08-03 20:43:58,832 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 85 selfloop transitions, 3 changer transitions 3/101 dead transitions. [2023-08-03 20:43:58,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 554 flow [2023-08-03 20:43:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:43:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:43:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 781 transitions. [2023-08-03 20:43:58,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2023-08-03 20:43:58,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 781 transitions. [2023-08-03 20:43:58,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 781 transitions. [2023-08-03 20:43:58,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:58,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 781 transitions. [2023-08-03 20:43:58,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:58,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:58,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:43:58,837 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 304 flow. Second operand 4 states and 781 transitions. [2023-08-03 20:43:58,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 554 flow [2023-08-03 20:44:00,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 550 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:44:00,084 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 302 flow [2023-08-03 20:44:00,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2023-08-03 20:44:00,085 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 27 predicate places. [2023-08-03 20:44:00,085 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 302 flow [2023-08-03 20:44:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 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 20:44:00,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:44:00,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:44:00,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-03 20:44:00,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 20:44:00,289 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 20:44:00,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:44:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash 749041372, now seen corresponding path program 1 times [2023-08-03 20:44:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:44:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921508136] [2023-08-03 20:44:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:00,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:44:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:44:00,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:44:00,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921508136] [2023-08-03 20:44:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921508136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:44:00,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:44:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:44:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657083399] [2023-08-03 20:44:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:44:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:44:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:44:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:44:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:44:00,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 407 [2023-08-03 20:44:00,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 20:44:00,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:44:00,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 407 [2023-08-03 20:44:00,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:44:04,884 INFO L124 PetriNetUnfolderBase]: 52893/67059 cut-off events. [2023-08-03 20:44:04,884 INFO L125 PetriNetUnfolderBase]: For 18554/18554 co-relation queries the response was YES. [2023-08-03 20:44:05,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150229 conditions, 67059 events. 52893/67059 cut-off events. For 18554/18554 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 335274 event pairs, 27362 based on Foata normal form. 0/47274 useless extension candidates. Maximal degree in co-relation 149990. Up to 50682 conditions per place. [2023-08-03 20:44:05,248 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 110 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-08-03 20:44:05,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 122 transitions, 766 flow [2023-08-03 20:44:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:44:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:44:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 799 transitions. [2023-08-03 20:44:05,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907862407862408 [2023-08-03 20:44:05,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 799 transitions. [2023-08-03 20:44:05,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 799 transitions. [2023-08-03 20:44:05,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:44:05,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 799 transitions. [2023-08-03 20:44:05,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 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 20:44:05,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:44:05,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 20:44:05,253 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 302 flow. Second operand 4 states and 799 transitions. [2023-08-03 20:44:05,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 122 transitions, 766 flow [2023-08-03 20:44:06,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 749 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 20:44:06,356 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 306 flow [2023-08-03 20:44:06,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2023-08-03 20:44:06,356 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 27 predicate places. [2023-08-03 20:44:06,357 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 306 flow [2023-08-03 20:44:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 20:44:06,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:44:06,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:44:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 20:44:06,357 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 20:44:06,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:44:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1224526361, now seen corresponding path program 1 times [2023-08-03 20:44:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:44:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374606162] [2023-08-03 20:44:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:44:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:44:06,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:44:06,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374606162] [2023-08-03 20:44:06,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374606162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:44:06,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:44:06,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:44:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025693378] [2023-08-03 20:44:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:44:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:44:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:44:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:44:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:44:06,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-03 20:44:06,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 178.4) internal successors, (892), 5 states have internal predecessors, (892), 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 20:44:06,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:44:06,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-03 20:44:06,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:44:10,960 INFO L124 PetriNetUnfolderBase]: 52890/67058 cut-off events. [2023-08-03 20:44:10,961 INFO L125 PetriNetUnfolderBase]: For 26754/26754 co-relation queries the response was YES. [2023-08-03 20:44:11,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160678 conditions, 67058 events. 52890/67058 cut-off events. For 26754/26754 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 335244 event pairs, 31998 based on Foata normal form. 1/47248 useless extension candidates. Maximal degree in co-relation 160432. Up to 64181 conditions per place. [2023-08-03 20:44:11,343 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 62 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-03 20:44:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 73 transitions, 436 flow [2023-08-03 20:44:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:44:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:44:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-08-03 20:44:11,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651924651924652 [2023-08-03 20:44:11,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-08-03 20:44:11,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-08-03 20:44:11,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:44:11,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-08-03 20:44:11,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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 20:44:11,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:44:11,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 20:44:11,347 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 306 flow. Second operand 3 states and 568 transitions. [2023-08-03 20:44:11,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 73 transitions, 436 flow [2023-08-03 20:44:11,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 73 transitions, 430 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 20:44:11,866 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 312 flow [2023-08-03 20:44:11,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2023-08-03 20:44:11,866 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2023-08-03 20:44:11,866 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 312 flow [2023-08-03 20:44:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.4) internal successors, (892), 5 states have internal predecessors, (892), 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 20:44:11,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:44:11,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:44:11,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 20:44:11,867 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 20:44:11,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:44:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1916903847, now seen corresponding path program 1 times [2023-08-03 20:44:11,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:44:11,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436779329] [2023-08-03 20:44:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:11,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:44:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:44:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:44:12,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436779329] [2023-08-03 20:44:12,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436779329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:44:12,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616418826] [2023-08-03 20:44:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:12,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:44:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:44:12,071 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:44:12,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 20:44:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:12,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:44:12,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:44:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:44:12,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:44:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:44:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616418826] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:44:12,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:44:12,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-08-03 20:44:12,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171602726] [2023-08-03 20:44:12,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:44:12,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 20:44:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:44:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 20:44:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-03 20:44:12,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 407 [2023-08-03 20:44:12,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 312 flow. Second operand has 10 states, 10 states have (on average 172.3) internal successors, (1723), 10 states have internal predecessors, (1723), 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 20:44:12,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:44:12,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 407 [2023-08-03 20:44:12,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:44:16,693 INFO L124 PetriNetUnfolderBase]: 50037/64190 cut-off events. [2023-08-03 20:44:16,694 INFO L125 PetriNetUnfolderBase]: For 18301/21229 co-relation queries the response was YES. [2023-08-03 20:44:16,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149410 conditions, 64190 events. 50037/64190 cut-off events. For 18301/21229 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 329179 event pairs, 22776 based on Foata normal form. 2928/50229 useless extension candidates. Maximal degree in co-relation 149380. Up to 48390 conditions per place. [2023-08-03 20:44:17,114 INFO L140 encePairwiseOnDemand]: 402/407 looper letters, 109 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2023-08-03 20:44:17,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 122 transitions, 766 flow [2023-08-03 20:44:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:44:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:44:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-08-03 20:44:17,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46044226044226044 [2023-08-03 20:44:17,116 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-08-03 20:44:17,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-08-03 20:44:17,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:44:17,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-08-03 20:44:17,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 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 20:44:17,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:44:17,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:44:17,120 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 312 flow. Second operand 5 states and 937 transitions. [2023-08-03 20:44:17,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 122 transitions, 766 flow [2023-08-03 20:44:17,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 122 transitions, 762 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:44:17,624 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 324 flow [2023-08-03 20:44:17,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2023-08-03 20:44:17,625 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 32 predicate places. [2023-08-03 20:44:17,625 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 324 flow [2023-08-03 20:44:17,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 172.3) internal successors, (1723), 10 states have internal predecessors, (1723), 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 20:44:17,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:44:17,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:44:17,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 20:44:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:44:17,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 20:44:17,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:44:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash -456526136, now seen corresponding path program 1 times [2023-08-03 20:44:17,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:44:17,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785646442] [2023-08-03 20:44:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:17,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:44:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-03 20:44:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:44:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785646442] [2023-08-03 20:44:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785646442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:44:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086423784] [2023-08-03 20:44:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:44:17,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:44:17,941 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:44:17,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 20:44:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:18,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:44:18,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:44:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-03 20:44:18,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:44:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-03 20:44:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086423784] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 20:44:18,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 20:44:18,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-03 20:44:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025189288] [2023-08-03 20:44:18,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:44:18,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:44:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:44:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:44:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-03 20:44:18,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 407 [2023-08-03 20:44:18,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 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 20:44:18,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:44:18,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 407 [2023-08-03 20:44:18,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:44:22,588 INFO L124 PetriNetUnfolderBase]: 47136/61280 cut-off events. [2023-08-03 20:44:22,588 INFO L125 PetriNetUnfolderBase]: For 23998/29847 co-relation queries the response was YES. [2023-08-03 20:44:22,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155148 conditions, 61280 events. 47136/61280 cut-off events. For 23998/29847 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 320127 event pairs, 25005 based on Foata normal form. 5849/53142 useless extension candidates. Maximal degree in co-relation 155110. Up to 46124 conditions per place. [2023-08-03 20:44:22,976 INFO L140 encePairwiseOnDemand]: 402/407 looper letters, 108 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-08-03 20:44:22,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 760 flow [2023-08-03 20:44:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:44:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:44:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 934 transitions. [2023-08-03 20:44:22,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458968058968059 [2023-08-03 20:44:22,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 934 transitions. [2023-08-03 20:44:22,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 934 transitions. [2023-08-03 20:44:22,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:44:22,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 934 transitions. [2023-08-03 20:44:22,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.8) internal successors, (934), 5 states have internal predecessors, (934), 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 20:44:22,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:44:22,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:44:22,981 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 324 flow. Second operand 5 states and 934 transitions. [2023-08-03 20:44:22,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 760 flow [2023-08-03 20:44:23,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 121 transitions, 749 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 20:44:23,503 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 332 flow [2023-08-03 20:44:23,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2023-08-03 20:44:23,504 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-08-03 20:44:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 332 flow [2023-08-03 20:44:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 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 20:44:23,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:44:23,504 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:44:23,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 20:44:23,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:44:23,709 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 20:44:23,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:44:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash 197004230, now seen corresponding path program 1 times [2023-08-03 20:44:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:44:23,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796353458] [2023-08-03 20:44:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:44:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 20:44:23,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:44:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796353458] [2023-08-03 20:44:23,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796353458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:44:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948335726] [2023-08-03 20:44:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:23,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:44:23,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:44:23,790 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:44:23,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 20:44:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:23,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:44:23,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:44:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-08-03 20:44:23,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:44:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-08-03 20:44:24,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948335726] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 20:44:24,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 20:44:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-03 20:44:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418133608] [2023-08-03 20:44:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:44:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:44:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:44:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:44:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-03 20:44:24,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 407 [2023-08-03 20:44:24,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 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 20:44:24,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:44:24,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 407 [2023-08-03 20:44:24,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:44:28,378 INFO L124 PetriNetUnfolderBase]: 44304/58349 cut-off events. [2023-08-03 20:44:28,379 INFO L125 PetriNetUnfolderBase]: For 26980/35733 co-relation queries the response was YES. [2023-08-03 20:44:28,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155350 conditions, 58349 events. 44304/58349 cut-off events. For 26980/35733 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 307643 event pairs, 22686 based on Foata normal form. 8753/55965 useless extension candidates. Maximal degree in co-relation 155311. Up to 43987 conditions per place. [2023-08-03 20:44:28,734 INFO L140 encePairwiseOnDemand]: 402/407 looper letters, 107 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-03 20:44:28,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 763 flow [2023-08-03 20:44:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:44:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:44:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2023-08-03 20:44:28,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45798525798525797 [2023-08-03 20:44:28,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2023-08-03 20:44:28,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2023-08-03 20:44:28,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:44:28,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2023-08-03 20:44:28,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 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 20:44:28,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:44:28,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 20:44:28,739 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 332 flow. Second operand 5 states and 932 transitions. [2023-08-03 20:44:28,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 763 flow [2023-08-03 20:44:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 752 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 20:44:29,280 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 340 flow [2023-08-03 20:44:29,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2023-08-03 20:44:29,281 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 36 predicate places. [2023-08-03 20:44:29,281 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 340 flow [2023-08-03 20:44:29,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 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 20:44:29,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:44:29,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:44:29,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 20:44:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-03 20:44:29,487 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 20:44:29,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:44:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 895848407, now seen corresponding path program 1 times [2023-08-03 20:44:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:44:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193317647] [2023-08-03 20:44:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:44:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:44:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:44:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193317647] [2023-08-03 20:44:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193317647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:44:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720468607] [2023-08-03 20:44:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:44:30,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:44:30,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:44:30,053 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:44:30,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 20:44:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:44:30,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-03 20:44:30,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:44:30,243 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 20:44:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:44:30,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-03 20:44:30,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:44:30,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-03 20:44:30,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:44:30,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-03 20:44:30,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:44:30,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-03 20:44:30,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:44:30,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-03 20:44:30,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-08-03 20:44:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 20:44:30,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:44:31,034 WARN L839 $PredicateComparison]: unable to prove that (and (or (<= c_~min~0 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int))) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))) (forall ((v_ArrVal_971 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse0) (<= .cse0 c_~max~0))))) is different from false [2023-08-03 20:44:34,376 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse0 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse1) (<= .cse1 .cse0))))))) (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse2 c_~max~0) (<= c_~min~0 .cse2) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< .cse2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))))) (or (and (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse3 c_~max~0) (<= c_~min~0 .cse3)))) (or (<= c_~min~0 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< c_~max~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_969 (Array Int Int))) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))))) is different from false [2023-08-03 20:44:34,824 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< c_~max~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))) (.cse5 (forall ((v_ArrVal_969 (Array Int Int))) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset)))) (.cse6 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (or (and (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse0 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse1) (<= .cse1 .cse0))))))) (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse2 c_~max~0) (<= c_~min~0 .cse2) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< .cse2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))))) (or (and (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse3 c_~max~0) (<= c_~min~0 .cse3)))) (or (<= c_~min~0 c_~max~0) .cse4)) .cse5)) (< .cse6 c_~min~0)) (or (and (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse7 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse7 c_~max~0) (<= .cse6 .cse7) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< .cse7 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))))) (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse8 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse6 .cse8) (<= .cse8 .cse9)))) (<= .cse9 c_~max~0)))) (or (and (or (<= .cse6 c_~max~0) .cse4) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse10 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse10 c_~max~0) (<= .cse6 .cse10))))) .cse5)) (<= c_~min~0 .cse6)))) is different from false [2023-08-03 20:44:35,317 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse13 (select |c_#memory_int| c_~A~0.base))) (let ((.cse4 (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< c_~max~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))) (.cse6 (select .cse13 c_~A~0.offset)) (.cse5 (forall ((v_ArrVal_969 (Array Int Int))) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))))) (let ((.cse7 (and (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse14 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse14 c_~max~0) (<= .cse6 .cse14) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< .cse14 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))))) (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse16 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse15 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse6 .cse15) (<= .cse15 .cse16)))) (<= .cse16 c_~max~0)))) (or (and (or (<= .cse6 c_~max~0) .cse4) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse17 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse17 c_~max~0) (<= .cse6 .cse17))))) .cse5))) (.cse8 (select .cse13 (+ c_~A~0.offset (* c_thread1Thread1of2ForFork1_~i~0 4))))) (and (or (and (or (and (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse0 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse1) (<= .cse1 .cse0))))))) (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse2 c_~max~0) (<= c_~min~0 .cse2) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< .cse2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))))) (or (and (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse3 c_~max~0) (<= c_~min~0 .cse3)))) (or (<= c_~min~0 c_~max~0) .cse4)) .cse5)) (< .cse6 c_~min~0)) (or .cse7 (<= c_~min~0 .cse6))) (< .cse8 c_~min~0)) (or (<= c_~min~0 .cse8) (and (or (< .cse6 .cse8) (and (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse8 .cse9) (<= .cse9 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (< .cse9 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset)))))) (or (and (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse10 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse10 c_~max~0) (<= .cse8 .cse10)))) (or .cse4 (<= .cse8 c_~max~0))) .cse5) (forall ((v_ArrVal_969 (Array Int Int))) (let ((.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_969) c_~A~0.base) c_~A~0.offset))) (or (<= .cse11 c_~max~0) (forall ((v_ArrVal_971 (Array Int Int)) (v_ArrVal_970 (Array Int Int))) (let ((.cse12 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_971) c_~A~0.base) c_~A~0.offset))) (or (<= .cse8 .cse12) (<= .cse12 .cse11))))))))) (or .cse7 (<= .cse8 .cse6)))))))) is different from false [2023-08-03 20:44:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 1 times theorem prover too weak. 16 trivial. 16 not checked. [2023-08-03 20:44:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720468607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:44:46,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:44:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 15] total 29 [2023-08-03 20:44:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918343291] [2023-08-03 20:44:46,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:44:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-03 20:44:46,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:44:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-03 20:44:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=457, Unknown=19, NotChecked=204, Total=870 [2023-08-03 20:44:46,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 407 [2023-08-03 20:44:46,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 340 flow. Second operand has 30 states, 30 states have (on average 124.9) internal successors, (3747), 30 states have internal predecessors, (3747), 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 20:44:46,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:44:46,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 407 [2023-08-03 20:44:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:45:06,112 INFO L124 PetriNetUnfolderBase]: 178394/230381 cut-off events. [2023-08-03 20:45:06,112 INFO L125 PetriNetUnfolderBase]: For 169317/169317 co-relation queries the response was YES. [2023-08-03 20:45:06,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650909 conditions, 230381 events. 178394/230381 cut-off events. For 169317/169317 co-relation queries the response was YES. Maximal size of possible extension queue 3090. Compared 1279369 event pairs, 10741 based on Foata normal form. 2/192994 useless extension candidates. Maximal degree in co-relation 650869. Up to 105982 conditions per place. [2023-08-03 20:45:07,108 INFO L140 encePairwiseOnDemand]: 393/407 looper letters, 0 selfloop transitions, 0 changer transitions 1091/1091 dead transitions. [2023-08-03 20:45:07,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 1091 transitions, 7231 flow [2023-08-03 20:45:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-03 20:45:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-03 20:45:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5548 transitions. [2023-08-03 20:45:07,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35872235872235875 [2023-08-03 20:45:07,118 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5548 transitions. [2023-08-03 20:45:07,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5548 transitions. [2023-08-03 20:45:07,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:45:07,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5548 transitions. [2023-08-03 20:45:07,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 146.0) internal successors, (5548), 38 states have internal predecessors, (5548), 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 20:45:07,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 407.0) internal successors, (15873), 39 states have internal predecessors, (15873), 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 20:45:07,135 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 407.0) internal successors, (15873), 39 states have internal predecessors, (15873), 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 20:45:07,135 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 340 flow. Second operand 38 states and 5548 transitions. [2023-08-03 20:45:07,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 1091 transitions, 7231 flow [2023-08-03 20:45:12,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 1091 transitions, 7127 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-08-03 20:45:12,786 INFO L231 Difference]: Finished difference. Result has 126 places, 0 transitions, 0 flow [2023-08-03 20:45:12,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=0, PETRI_PLACES=126, PETRI_TRANSITIONS=0} [2023-08-03 20:45:12,786 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 67 predicate places. [2023-08-03 20:45:12,787 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 0 transitions, 0 flow [2023-08-03 20:45:12,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 124.9) internal successors, (3747), 30 states have internal predecessors, (3747), 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 20:45:12,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 20:45:12,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 20:45:12,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:45:12,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:45:12,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 20:45:12,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:45:12,994 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:45:12,995 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:45:12,995 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:45:12,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:45:12 BasicIcfg [2023-08-03 20:45:12,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:45:12,998 INFO L158 Benchmark]: Toolchain (without parser) took 215998.25ms. Allocated memory was 385.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 341.4MB in the beginning and 12.2GB in the end (delta: -11.8GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. [2023-08-03 20:45:12,998 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory was 342.7MB in the beginning and 342.5MB in the end (delta: 174.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:45:12,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.87ms. Allocated memory is still 385.9MB. Free memory was 341.0MB in the beginning and 329.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 20:45:12,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.02ms. Allocated memory is still 385.9MB. Free memory was 329.2MB in the beginning and 327.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:45:12,998 INFO L158 Benchmark]: Boogie Preprocessor took 27.68ms. Allocated memory is still 385.9MB. Free memory was 327.1MB in the beginning and 325.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:45:12,999 INFO L158 Benchmark]: RCFGBuilder took 402.77ms. Allocated memory is still 385.9MB. Free memory was 325.5MB in the beginning and 304.0MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 20:45:12,999 INFO L158 Benchmark]: TraceAbstraction took 215259.33ms. Allocated memory was 385.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 303.6MB in the beginning and 12.2GB in the end (delta: -11.9GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-08-03 20:45:13,002 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory was 342.7MB in the beginning and 342.5MB in the end (delta: 174.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 255.87ms. Allocated memory is still 385.9MB. Free memory was 341.0MB in the beginning and 329.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.02ms. Allocated memory is still 385.9MB. Free memory was 329.2MB in the beginning and 327.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 27.68ms. Allocated memory is still 385.9MB. Free memory was 327.1MB in the beginning and 325.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 402.77ms. Allocated memory is still 385.9MB. Free memory was 325.5MB in the beginning and 304.0MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 215259.33ms. Allocated memory was 385.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 303.6MB in the beginning and 12.2GB in the end (delta: -11.9GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 170 PlacesBefore, 42 PlacesAfterwards, 188 TransitionsBefore, 47 TransitionsAfterwards, 4058 CoEnabledTransitionPairs, 6 FixpointIterations, 63 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 17 ConcurrentYvCompositions, 13 ChoiceCompositions, 164 TotalNumberOfCompositions, 6670 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5842, independent: 5778, independent conditional: 0, independent unconditional: 5778, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2092, independent: 2073, independent conditional: 0, independent unconditional: 2073, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5842, independent: 3705, independent conditional: 0, independent unconditional: 3705, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 2092, unknown conditional: 0, unknown unconditional: 2092] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 135, Positive conditional cache size: 0, Positive unconditional cache size: 135, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 198 PlacesBefore, 59 PlacesAfterwards, 223 TransitionsBefore, 69 TransitionsAfterwards, 10168 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 21 ConcurrentYvCompositions, 15 ChoiceCompositions, 184 TotalNumberOfCompositions, 22285 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19364, independent: 19247, independent conditional: 0, independent unconditional: 19247, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5360, independent: 5335, independent conditional: 0, independent unconditional: 5335, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19364, independent: 13912, independent conditional: 0, independent unconditional: 13912, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 5360, unknown conditional: 0, unknown unconditional: 5360] , Statistics on independence cache: Total cache size (in pairs): 462, Positive cache size: 458, Positive conditional cache size: 0, Positive unconditional cache size: 458, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 186 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 208 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 210.2s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 180.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 51 mSolverCounterUnknown, 2832 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2466 mSDsluCounter, 522 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3845 IncrementalHoareTripleChecker+Unchecked, 328 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7672 IncrementalHoareTripleChecker+Invalid, 11692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 194 mSDtfsCounter, 7672 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1366 GetRequests, 1181 SyntacticMatches, 45 SemanticMatches, 140 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=20, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 1559 NumberOfCodeBlocks, 1559 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2039 ConstructedInterpolants, 28 QuantifiedInterpolants, 14164 SizeOfPredicates, 29 NumberOfNonLiveVariables, 4126 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 48 InterpolantComputations, 13 PerfectInterpolantSequences, 921/1013 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 20:45:13,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...