/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 08:21:14,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 08:21:14,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 08:21:14,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 08:21:14,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 08:21:14,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 08:21:14,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 08:21:14,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 08:21:14,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 08:21:14,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 08:21:14,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 08:21:14,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 08:21:14,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 08:21:14,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 08:21:14,600 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 08:21:14,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 08:21:14,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 08:21:14,601 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 08:21:14,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 08:21:14,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 08:21:14,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 08:21:14,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 08:21:14,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 08:21:14,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 08:21:14,602 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 08:21:14,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 08:21:14,603 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 08:21:14,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 08:21:14,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 08:21:14,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 08:21:14,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 08:21:14,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 08:21:14,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 08:21:14,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 08:21:14,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 08:21:14,605 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 08:21:14,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 08:21:14,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 08:21:14,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 08:21:14,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 08:21:14,849 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 08:21:14,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-trans.wvr_bound2.c [2023-08-04 08:21:15,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 08:21:16,037 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 08:21:16,039 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-trans.wvr_bound2.c [2023-08-04 08:21:16,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430f68761/6c123fab693f43819de29d8b7d09fefe/FLAGf17d2e53b [2023-08-04 08:21:16,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430f68761/6c123fab693f43819de29d8b7d09fefe [2023-08-04 08:21:16,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 08:21:16,072 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 08:21:16,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 08:21:16,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 08:21:16,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 08:21:16,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19324610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16, skipping insertion in model container [2023-08-04 08:21:16,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,108 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 08:21:16,257 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_chl-collitem-trans.wvr_bound2.c[3724,3737] [2023-08-04 08:21:16,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 08:21:16,268 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 08:21:16,289 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_chl-collitem-trans.wvr_bound2.c[3724,3737] [2023-08-04 08:21:16,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 08:21:16,298 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 08:21:16,298 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 08:21:16,304 INFO L206 MainTranslator]: Completed translation [2023-08-04 08:21:16,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16 WrapperNode [2023-08-04 08:21:16,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 08:21:16,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 08:21:16,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 08:21:16,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 08:21:16,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,350 INFO L138 Inliner]: procedures = 23, calls = 45, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 409 [2023-08-04 08:21:16,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 08:21:16,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 08:21:16,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 08:21:16,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 08:21:16,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 08:21:16,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 08:21:16,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 08:21:16,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 08:21:16,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (1/1) ... [2023-08-04 08:21:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 08:21:16,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:16,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 08:21:16,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 08:21:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 08:21:16,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 08:21:16,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 08:21:16,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 08:21:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 08:21:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 08:21:16,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 08:21:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 08:21:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 08:21:16,491 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 08:21:16,589 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 08:21:16,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 08:21:17,016 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 08:21:17,447 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 08:21:17,447 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-04 08:21:17,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 08:21:17 BoogieIcfgContainer [2023-08-04 08:21:17,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 08:21:17,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 08:21:17,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 08:21:17,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 08:21:17,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 08:21:16" (1/3) ... [2023-08-04 08:21:17,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db22702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 08:21:17, skipping insertion in model container [2023-08-04 08:21:17,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:21:16" (2/3) ... [2023-08-04 08:21:17,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db22702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 08:21:17, skipping insertion in model container [2023-08-04 08:21:17,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 08:21:17" (3/3) ... [2023-08-04 08:21:17,460 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-collitem-trans.wvr_bound2.c [2023-08-04 08:21:17,468 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 08:21:17,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 08:21:17,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 08:21:17,477 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 08:21:17,578 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 08:21:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 180 transitions, 402 flow [2023-08-04 08:21:17,808 INFO L124 PetriNetUnfolderBase]: 82/620 cut-off events. [2023-08-04 08:21:17,809 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:21:17,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 620 events. 82/620 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2884 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 373. Up to 16 conditions per place. [2023-08-04 08:21:17,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 180 transitions, 402 flow [2023-08-04 08:21:17,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 167 transitions, 370 flow [2023-08-04 08:21:17,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:21:17,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 167 transitions, 370 flow [2023-08-04 08:21:17,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 167 transitions, 370 flow [2023-08-04 08:21:17,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 167 transitions, 370 flow [2023-08-04 08:21:17,908 INFO L124 PetriNetUnfolderBase]: 82/533 cut-off events. [2023-08-04 08:21:17,908 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:21:17,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 533 events. 82/533 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2190 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2023-08-04 08:21:17,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2023-08-04 08:21:26,448 INFO L134 LiptonReduction]: Checked pairs total: 4327 [2023-08-04 08:21:26,449 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 08:21:26,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 08:21:26,464 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;@2a930100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:21:26,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 08:21:26,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:21:26,468 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2023-08-04 08:21:26,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:21:26,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:26,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:26,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:26,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash 796287057, now seen corresponding path program 1 times [2023-08-04 08:21:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501699058] [2023-08-04 08:21:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:26,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:21:26,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501699058] [2023-08-04 08:21:26,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501699058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:26,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:21:26,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 08:21:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995177339] [2023-08-04 08:21:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:21:26,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 321 [2023-08-04 08:21:26,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:26,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:26,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 321 [2023-08-04 08:21:26,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:26,947 INFO L124 PetriNetUnfolderBase]: 372/747 cut-off events. [2023-08-04 08:21:26,948 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-04 08:21:26,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 747 events. 372/747 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3617 event pairs, 188 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 1084. Up to 687 conditions per place. [2023-08-04 08:21:26,952 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 33 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2023-08-04 08:21:26,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 186 flow [2023-08-04 08:21:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-04 08:21:26,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150571131879543 [2023-08-04 08:21:26,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-04 08:21:26,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-04 08:21:26,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:26,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-04 08:21:26,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:26,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:26,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:26,974 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 110 flow. Second operand 3 states and 496 transitions. [2023-08-04 08:21:26,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 186 flow [2023-08-04 08:21:26,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 08:21:26,978 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 106 flow [2023-08-04 08:21:26,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2023-08-04 08:21:26,981 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-04 08:21:26,981 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 106 flow [2023-08-04 08:21:26,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:26,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:26,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:26,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 08:21:26,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:26,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -779741958, now seen corresponding path program 1 times [2023-08-04 08:21:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199242731] [2023-08-04 08:21:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:26,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:21:27,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:27,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199242731] [2023-08-04 08:21:27,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199242731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:21:27,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660270310] [2023-08-04 08:21:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:27,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:27,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:27,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:21:27,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 08:21:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:27,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:21:27,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:21:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 08:21:27,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:21:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660270310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:27,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:21:27,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:21:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892721474] [2023-08-04 08:21:27,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:27,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:21:27,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 321 [2023-08-04 08:21:27,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:27,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:27,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 321 [2023-08-04 08:21:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:27,452 INFO L124 PetriNetUnfolderBase]: 354/713 cut-off events. [2023-08-04 08:21:27,452 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-04 08:21:27,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 713 events. 354/713 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3265 event pairs, 189 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 1446. Up to 645 conditions per place. [2023-08-04 08:21:27,463 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 34 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 08:21:27,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 186 flow [2023-08-04 08:21:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-04 08:21:27,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160955347871236 [2023-08-04 08:21:27,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-04 08:21:27,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-04 08:21:27,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:27,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-04 08:21:27,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:27,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:27,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:27,471 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 106 flow. Second operand 3 states and 497 transitions. [2023-08-04 08:21:27,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 186 flow [2023-08-04 08:21:27,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:21:27,472 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 110 flow [2023-08-04 08:21:27,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-08-04 08:21:27,473 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-04 08:21:27,473 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 110 flow [2023-08-04 08:21:27,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:27,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:27,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:27,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 08:21:27,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:27,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:27,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1307278771, now seen corresponding path program 1 times [2023-08-04 08:21:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574457859] [2023-08-04 08:21:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 08:21:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574457859] [2023-08-04 08:21:27,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574457859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:21:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979916648] [2023-08-04 08:21:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:27,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:27,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:27,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:21:27,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 08:21:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:27,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:21:27,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:21:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 08:21:27,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:21:27,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979916648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:27,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:21:27,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:21:27,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782026166] [2023-08-04 08:21:27,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:27,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:27,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:21:27,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 321 [2023-08-04 08:21:27,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:27,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:27,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 321 [2023-08-04 08:21:27,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:28,100 INFO L124 PetriNetUnfolderBase]: 350/709 cut-off events. [2023-08-04 08:21:28,100 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 08:21:28,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 709 events. 350/709 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3053 event pairs, 194 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 838. Up to 621 conditions per place. [2023-08-04 08:21:28,102 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 35 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 08:21:28,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 194 flow [2023-08-04 08:21:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-04 08:21:28,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171339563862928 [2023-08-04 08:21:28,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-04 08:21:28,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-04 08:21:28,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:28,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-04 08:21:28,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,107 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 110 flow. Second operand 3 states and 498 transitions. [2023-08-04 08:21:28,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 194 flow [2023-08-04 08:21:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:21:28,109 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 114 flow [2023-08-04 08:21:28,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-04 08:21:28,113 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-04 08:21:28,113 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 114 flow [2023-08-04 08:21:28,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:28,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:28,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 08:21:28,318 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,SelfDestructingSolverStorable2 [2023-08-04 08:21:28,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:28,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1982104000, now seen corresponding path program 1 times [2023-08-04 08:21:28,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:28,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661466885] [2023-08-04 08:21:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:28,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 08:21:28,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661466885] [2023-08-04 08:21:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661466885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:21:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270538288] [2023-08-04 08:21:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:28,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:28,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:28,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:21:28,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 08:21:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:28,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:21:28,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:21:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 08:21:28,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:21:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270538288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:28,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:21:28,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:21:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908181875] [2023-08-04 08:21:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:28,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:28,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:21:28,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 321 [2023-08-04 08:21:28,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:28,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 321 [2023-08-04 08:21:28,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:28,705 INFO L124 PetriNetUnfolderBase]: 242/513 cut-off events. [2023-08-04 08:21:28,706 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 08:21:28,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 513 events. 242/513 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2000 event pairs, 169 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 650. Up to 417 conditions per place. [2023-08-04 08:21:28,714 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 40 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-04 08:21:28,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 220 flow [2023-08-04 08:21:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-04 08:21:28,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212876427829699 [2023-08-04 08:21:28,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-04 08:21:28,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-04 08:21:28,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:28,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-04 08:21:28,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,731 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 114 flow. Second operand 3 states and 502 transitions. [2023-08-04 08:21:28,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 220 flow [2023-08-04 08:21:28,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:21:28,733 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 122 flow [2023-08-04 08:21:28,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-08-04 08:21:28,733 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-04 08:21:28,734 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 122 flow [2023-08-04 08:21:28,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:28,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:28,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:28,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 08:21:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:28,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:28,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2066969704, now seen corresponding path program 1 times [2023-08-04 08:21:28,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:28,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906567216] [2023-08-04 08:21:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:28,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 08:21:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906567216] [2023-08-04 08:21:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906567216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:21:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68289128] [2023-08-04 08:21:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:29,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:29,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:21:29,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 08:21:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:29,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:21:29,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:21:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 08:21:29,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:21:29,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68289128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:29,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:21:29,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:21:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799323787] [2023-08-04 08:21:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:21:29,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 321 [2023-08-04 08:21:29,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:29,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 321 [2023-08-04 08:21:29,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:29,400 INFO L124 PetriNetUnfolderBase]: 193/432 cut-off events. [2023-08-04 08:21:29,400 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-04 08:21:29,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 432 events. 193/432 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1581 event pairs, 146 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 583. Up to 319 conditions per place. [2023-08-04 08:21:29,402 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 41 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-04 08:21:29,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 230 flow [2023-08-04 08:21:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-04 08:21:29,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212876427829699 [2023-08-04 08:21:29,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-04 08:21:29,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-04 08:21:29,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:29,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-04 08:21:29,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,407 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 122 flow. Second operand 3 states and 502 transitions. [2023-08-04 08:21:29,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 230 flow [2023-08-04 08:21:29,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:21:29,408 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 132 flow [2023-08-04 08:21:29,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-08-04 08:21:29,408 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-04 08:21:29,409 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 132 flow [2023-08-04 08:21:29,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:29,409 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-04 08:21:29,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 08:21:29,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:29,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:29,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1645237325, now seen corresponding path program 1 times [2023-08-04 08:21:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:29,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27905612] [2023-08-04 08:21:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 08:21:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27905612] [2023-08-04 08:21:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27905612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:21:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969720596] [2023-08-04 08:21:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:29,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:29,684 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) [2023-08-04 08:21:29,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 08:21:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:29,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:21:29,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:21:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:21:29,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:21:29,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969720596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:29,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:21:29,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 08:21:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890159504] [2023-08-04 08:21:29,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:29,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:29,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:21:29,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 321 [2023-08-04 08:21:29,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:29,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 321 [2023-08-04 08:21:29,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:29,942 INFO L124 PetriNetUnfolderBase]: 189/424 cut-off events. [2023-08-04 08:21:29,942 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-04 08:21:29,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 424 events. 189/424 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1524 event pairs, 171 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 628. Up to 374 conditions per place. [2023-08-04 08:21:29,944 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 35 selfloop transitions, 2 changer transitions 3/43 dead transitions. [2023-08-04 08:21:29,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 220 flow [2023-08-04 08:21:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-04 08:21:29,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171339563862928 [2023-08-04 08:21:29,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-04 08:21:29,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-04 08:21:29,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:29,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-04 08:21:29,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,949 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 132 flow. Second operand 3 states and 498 transitions. [2023-08-04 08:21:29,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 220 flow [2023-08-04 08:21:29,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:21:29,950 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 130 flow [2023-08-04 08:21:29,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-04 08:21:29,951 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-04 08:21:29,951 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 130 flow [2023-08-04 08:21:29,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:29,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:29,952 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-04 08:21:29,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 08:21:30,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:30,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:30,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:30,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1916119974, now seen corresponding path program 1 times [2023-08-04 08:21:30,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524028282] [2023-08-04 08:21:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:21:30,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:30,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524028282] [2023-08-04 08:21:30,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524028282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:21:30,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238441545] [2023-08-04 08:21:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:30,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:21:30,259 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) [2023-08-04 08:21:30,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 08:21:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:30,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:21:30,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:21:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:21:30,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:21:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:21:30,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238441545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:21:30,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:21:30,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 08:21:30,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146859503] [2023-08-04 08:21:30,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:21:30,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:21:30,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:30,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:21:30,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:21:30,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-08-04 08:21:30,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:30,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:30,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-08-04 08:21:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:30,497 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-04 08:21:30,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:21:30,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 10 events. 2/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 23. Up to 6 conditions per place. [2023-08-04 08:21:30,497 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-04 08:21:30,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 7 transitions, 32 flow [2023-08-04 08:21:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:21:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:21:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 616 transitions. [2023-08-04 08:21:30,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797507788161994 [2023-08-04 08:21:30,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 616 transitions. [2023-08-04 08:21:30,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 616 transitions. [2023-08-04 08:21:30,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:30,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 616 transitions. [2023-08-04 08:21:30,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:30,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:30,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:30,504 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 130 flow. Second operand 4 states and 616 transitions. [2023-08-04 08:21:30,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 7 transitions, 32 flow [2023-08-04 08:21:30,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:21:30,505 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 08:21:30,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 08:21:30,505 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -17 predicate places. [2023-08-04 08:21:30,505 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 08:21:30,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:30,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 08:21:30,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 08:21:30,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:21:30,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:30,715 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 08:21:30,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 180 transitions, 402 flow [2023-08-04 08:21:30,749 INFO L124 PetriNetUnfolderBase]: 82/620 cut-off events. [2023-08-04 08:21:30,749 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:21:30,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 620 events. 82/620 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2884 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 373. Up to 16 conditions per place. [2023-08-04 08:21:30,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 180 transitions, 402 flow [2023-08-04 08:21:30,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 263 flow [2023-08-04 08:21:30,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:21:30,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 124 transitions, 263 flow [2023-08-04 08:21:30,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 124 transitions, 263 flow [2023-08-04 08:21:30,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 263 flow [2023-08-04 08:21:30,763 INFO L124 PetriNetUnfolderBase]: 6/220 cut-off events. [2023-08-04 08:21:30,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:21:30,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 220 events. 6/220 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 422 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-04 08:21:30,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 486 [2023-08-04 08:21:38,726 INFO L134 LiptonReduction]: Checked pairs total: 357 [2023-08-04 08:21:38,726 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-04 08:21:38,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 08:21:38,728 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;@2a930100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:21:38,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 08:21:38,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:21:38,731 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-04 08:21:38,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:21:38,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:38,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 08:21:38,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:21:38,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash 273890285, now seen corresponding path program 1 times [2023-08-04 08:21:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270534437] [2023-08-04 08:21:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 08:21:38,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:38,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270534437] [2023-08-04 08:21:38,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270534437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:38,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:21:38,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 08:21:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985567538] [2023-08-04 08:21:38,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:38,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:38,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:21:38,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 291 [2023-08-04 08:21:38,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:38,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:38,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 291 [2023-08-04 08:21:38,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:21:38,809 INFO L124 PetriNetUnfolderBase]: 45/111 cut-off events. [2023-08-04 08:21:38,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:21:38,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 111 events. 45/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 344 event pairs, 20 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 228. Up to 96 conditions per place. [2023-08-04 08:21:38,810 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 14 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-08-04 08:21:38,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 85 flow [2023-08-04 08:21:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:21:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:21:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-04 08:21:38,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54524627720504 [2023-08-04 08:21:38,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-04 08:21:38,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-04 08:21:38,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:21:38,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-04 08:21:38,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:38,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:38,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:38,814 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 49 flow. Second operand 3 states and 476 transitions. [2023-08-04 08:21:38,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 85 flow [2023-08-04 08:21:38,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 85 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 08:21:38,815 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 57 flow [2023-08-04 08:21:38,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-04 08:21:38,815 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-08-04 08:21:38,816 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 57 flow [2023-08-04 08:21:38,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:38,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:38,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 08:21:38,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 08:21:38,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:21:38,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash 307312528, now seen corresponding path program 1 times [2023-08-04 08:21:38,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:38,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628552471] [2023-08-04 08:21:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:38,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 08:21:38,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 08:21:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 08:21:38,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 08:21:38,845 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 08:21:38,845 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 08:21:38,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 08:21:38,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 08:21:38,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 08:21:38,846 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 08:21:38,846 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 08:21:38,846 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 08:21:38,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 08:21:38,898 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 08:21:38,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 201 transitions, 492 flow [2023-08-04 08:21:39,168 INFO L124 PetriNetUnfolderBase]: 834/3976 cut-off events. [2023-08-04 08:21:39,168 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 08:21:39,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 3976 events. 834/3976 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31193 event pairs, 11 based on Foata normal form. 0/3386 useless extension candidates. Maximal degree in co-relation 2320. Up to 192 conditions per place. [2023-08-04 08:21:39,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 201 transitions, 492 flow [2023-08-04 08:21:39,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 188 transitions, 454 flow [2023-08-04 08:21:39,185 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:21:39,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 188 transitions, 454 flow [2023-08-04 08:21:39,185 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 188 transitions, 454 flow [2023-08-04 08:21:39,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 454 flow [2023-08-04 08:21:39,464 INFO L124 PetriNetUnfolderBase]: 834/3323 cut-off events. [2023-08-04 08:21:39,464 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-08-04 08:21:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 3323 events. 834/3323 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23669 event pairs, 11 based on Foata normal form. 0/2797 useless extension candidates. Maximal degree in co-relation 1979. Up to 192 conditions per place. [2023-08-04 08:21:39,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 2988 [2023-08-04 08:21:53,163 INFO L134 LiptonReduction]: Checked pairs total: 13687 [2023-08-04 08:21:53,164 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-04 08:21:53,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 08:21:53,171 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;@2a930100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:21:53,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 08:21:53,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:21:53,174 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-04 08:21:53,174 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 08:21:53,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:21:53,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:21:53,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:21:53,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:21:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1050079387, now seen corresponding path program 1 times [2023-08-04 08:21:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:21:53,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847930333] [2023-08-04 08:21:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:21:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:21:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:21:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:21:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:21:53,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847930333] [2023-08-04 08:21:53,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847930333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:21:53,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:21:53,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 08:21:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765318675] [2023-08-04 08:21:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:21:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:21:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:21:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:21:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:21:53,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 08:21:53,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:21:53,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:21:53,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 08:21:53,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:00,561 INFO L124 PetriNetUnfolderBase]: 19931/29893 cut-off events. [2023-08-04 08:22:00,562 INFO L125 PetriNetUnfolderBase]: For 7060/7060 co-relation queries the response was YES. [2023-08-04 08:22:00,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62676 conditions, 29893 events. 19931/29893 cut-off events. For 7060/7060 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 187031 event pairs, 13302 based on Foata normal form. 0/27304 useless extension candidates. Maximal degree in co-relation 25235. Up to 28006 conditions per place. [2023-08-04 08:22:00,705 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 50 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-04 08:22:00,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 298 flow [2023-08-04 08:22:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:22:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:22:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-04 08:22:00,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2023-08-04 08:22:00,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-04 08:22:00,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-04 08:22:00,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:00,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-04 08:22:00,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:00,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:00,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:00,709 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 188 flow. Second operand 3 states and 530 transitions. [2023-08-04 08:22:00,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 298 flow [2023-08-04 08:22:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 08:22:00,731 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 188 flow [2023-08-04 08:22:00,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-08-04 08:22:00,732 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-04 08:22:00,732 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 188 flow [2023-08-04 08:22:00,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:00,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:00,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:22:00,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 08:22:00,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:00,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 827692224, now seen corresponding path program 1 times [2023-08-04 08:22:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91687431] [2023-08-04 08:22:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:00,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:22:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91687431] [2023-08-04 08:22:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91687431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866445024] [2023-08-04 08:22:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:00,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:00,756 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) [2023-08-04 08:22:00,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 08:22:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:00,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:22:00,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 08:22:00,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:22:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866445024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:22:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:22:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:22:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79511384] [2023-08-04 08:22:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:22:00,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:22:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:22:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:00,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 08:22:00,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:00,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:00,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 08:22:00,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:08,392 INFO L124 PetriNetUnfolderBase]: 19717/29517 cut-off events. [2023-08-04 08:22:08,392 INFO L125 PetriNetUnfolderBase]: For 4098/4098 co-relation queries the response was YES. [2023-08-04 08:22:08,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61849 conditions, 29517 events. 19717/29517 cut-off events. For 4098/4098 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 184461 event pairs, 13229 based on Foata normal form. 0/27006 useless extension candidates. Maximal degree in co-relation 61819. Up to 27632 conditions per place. [2023-08-04 08:22:08,500 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 53 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-04 08:22:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 308 flow [2023-08-04 08:22:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:22:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:22:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-08-04 08:22:08,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140096618357488 [2023-08-04 08:22:08,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-08-04 08:22:08,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-08-04 08:22:08,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:08,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-08-04 08:22:08,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:08,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:08,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:08,504 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 188 flow. Second operand 3 states and 532 transitions. [2023-08-04 08:22:08,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 308 flow [2023-08-04 08:22:08,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:22:08,507 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 198 flow [2023-08-04 08:22:08,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-08-04 08:22:08,507 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-04 08:22:08,508 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 198 flow [2023-08-04 08:22:08,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:08,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:08,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:22:08,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 08:22:08,713 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 [2023-08-04 08:22:08,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:08,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1691867107, now seen corresponding path program 1 times [2023-08-04 08:22:08,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:08,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747895107] [2023-08-04 08:22:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:08,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 08:22:08,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:08,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747895107] [2023-08-04 08:22:08,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747895107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056081841] [2023-08-04 08:22:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:08,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:08,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:08,741 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) [2023-08-04 08:22:08,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 08:22:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:08,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:22:08,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 08:22:08,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:22:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056081841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:22:08,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:22:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:22:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512331413] [2023-08-04 08:22:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:22:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:22:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:22:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:08,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 08:22:08,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:08,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:08,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 08:22:08,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:15,902 INFO L124 PetriNetUnfolderBase]: 19681/29763 cut-off events. [2023-08-04 08:22:15,903 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2023-08-04 08:22:15,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62148 conditions, 29763 events. 19681/29763 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 189526 event pairs, 13174 based on Foata normal form. 0/27324 useless extension candidates. Maximal degree in co-relation 27274. Up to 27256 conditions per place. [2023-08-04 08:22:16,043 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 56 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-04 08:22:16,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 328 flow [2023-08-04 08:22:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:22:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:22:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-08-04 08:22:16,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159420289855072 [2023-08-04 08:22:16,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-08-04 08:22:16,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-08-04 08:22:16,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:16,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-08-04 08:22:16,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:16,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:16,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:16,047 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 198 flow. Second operand 3 states and 534 transitions. [2023-08-04 08:22:16,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 328 flow [2023-08-04 08:22:16,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:22:16,050 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 208 flow [2023-08-04 08:22:16,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2023-08-04 08:22:16,051 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-08-04 08:22:16,051 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 208 flow [2023-08-04 08:22:16,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:16,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:16,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:22:16,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 08:22:16,256 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 [2023-08-04 08:22:16,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:16,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1750175552, now seen corresponding path program 1 times [2023-08-04 08:22:16,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:16,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823170405] [2023-08-04 08:22:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 08:22:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823170405] [2023-08-04 08:22:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823170405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551721872] [2023-08-04 08:22:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:16,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:16,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:16,313 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) [2023-08-04 08:22:16,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 08:22:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:16,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:22:16,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 08:22:16,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:22:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551721872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:22:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:22:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:22:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409073822] [2023-08-04 08:22:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:22:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:22:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:22:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:16,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 08:22:16,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:16,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:16,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 08:22:16,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:22,894 INFO L124 PetriNetUnfolderBase]: 18785/28651 cut-off events. [2023-08-04 08:22:22,894 INFO L125 PetriNetUnfolderBase]: For 2910/2910 co-relation queries the response was YES. [2023-08-04 08:22:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60517 conditions, 28651 events. 18785/28651 cut-off events. For 2910/2910 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 183775 event pairs, 13063 based on Foata normal form. 0/26620 useless extension candidates. Maximal degree in co-relation 28822. Up to 23580 conditions per place. [2023-08-04 08:22:22,988 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 64 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-04 08:22:22,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 383 flow [2023-08-04 08:22:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:22:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:22:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-04 08:22:22,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227053140096618 [2023-08-04 08:22:22,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-04 08:22:22,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-04 08:22:22,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:22,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-04 08:22:22,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:22,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:22,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:22,992 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 208 flow. Second operand 3 states and 541 transitions. [2023-08-04 08:22:22,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 383 flow [2023-08-04 08:22:22,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:22:22,996 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 218 flow [2023-08-04 08:22:22,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-04 08:22:22,996 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-08-04 08:22:22,996 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 218 flow [2023-08-04 08:22:22,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:22,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:22,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:22:23,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 08:22:23,201 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 [2023-08-04 08:22:23,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:23,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash 834420196, now seen corresponding path program 1 times [2023-08-04 08:22:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413749060] [2023-08-04 08:22:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 08:22:23,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:23,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413749060] [2023-08-04 08:22:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413749060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:23,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834702964] [2023-08-04 08:22:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:23,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:23,249 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) [2023-08-04 08:22:23,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 08:22:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:23,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:22:23,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 08:22:23,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:22:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834702964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:22:23,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:22:23,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:22:23,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813648750] [2023-08-04 08:22:23,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:22:23,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:22:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:22:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:23,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 08:22:23,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:23,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:23,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 08:22:23,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:29,839 INFO L124 PetriNetUnfolderBase]: 18576/28798 cut-off events. [2023-08-04 08:22:29,840 INFO L125 PetriNetUnfolderBase]: For 4852/4852 co-relation queries the response was YES. [2023-08-04 08:22:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63359 conditions, 28798 events. 18576/28798 cut-off events. For 4852/4852 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 186620 event pairs, 12252 based on Foata normal form. 0/27816 useless extension candidates. Maximal degree in co-relation 32424. Up to 20868 conditions per place. [2023-08-04 08:22:29,932 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 65 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-04 08:22:29,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 395 flow [2023-08-04 08:22:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:22:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:22:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-04 08:22:29,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227053140096618 [2023-08-04 08:22:29,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-04 08:22:29,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-04 08:22:29,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:29,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-04 08:22:29,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:29,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:29,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:29,937 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 218 flow. Second operand 3 states and 541 transitions. [2023-08-04 08:22:29,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 395 flow [2023-08-04 08:22:29,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:22:29,953 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 228 flow [2023-08-04 08:22:29,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-04 08:22:29,953 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-08-04 08:22:29,953 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 228 flow [2023-08-04 08:22:29,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:29,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:29,953 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-04 08:22:29,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 08:22:30,158 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 [2023-08-04 08:22:30,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:30,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:30,161 INFO L85 PathProgramCache]: Analyzing trace with hash 64735297, now seen corresponding path program 1 times [2023-08-04 08:22:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671157719] [2023-08-04 08:22:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 08:22:30,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671157719] [2023-08-04 08:22:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671157719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134576766] [2023-08-04 08:22:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:30,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:30,239 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) [2023-08-04 08:22:30,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 08:22:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:30,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:22:30,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:22:30,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:22:30,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134576766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:22:30,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:22:30,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 08:22:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665268713] [2023-08-04 08:22:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:22:30,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:22:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:22:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:30,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 08:22:30,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:30,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:30,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 08:22:30,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:36,940 INFO L124 PetriNetUnfolderBase]: 18847/29441 cut-off events. [2023-08-04 08:22:36,940 INFO L125 PetriNetUnfolderBase]: For 5944/5944 co-relation queries the response was YES. [2023-08-04 08:22:37,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66720 conditions, 29441 events. 18847/29441 cut-off events. For 5944/5944 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 190958 event pairs, 14123 based on Foata normal form. 0/29172 useless extension candidates. Maximal degree in co-relation 35088. Up to 23742 conditions per place. [2023-08-04 08:22:37,078 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-04 08:22:37,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 407 flow [2023-08-04 08:22:37,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:22:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:22:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-04 08:22:37,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227053140096618 [2023-08-04 08:22:37,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-04 08:22:37,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-04 08:22:37,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:37,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-04 08:22:37,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:37,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:37,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:37,082 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 228 flow. Second operand 3 states and 541 transitions. [2023-08-04 08:22:37,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 407 flow [2023-08-04 08:22:37,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:22:37,242 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 238 flow [2023-08-04 08:22:37,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-04 08:22:37,242 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2023-08-04 08:22:37,242 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 238 flow [2023-08-04 08:22:37,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:37,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:37,243 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-04 08:22:37,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-04 08:22:37,447 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 [2023-08-04 08:22:37,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:37,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2145998903, now seen corresponding path program 1 times [2023-08-04 08:22:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220541114] [2023-08-04 08:22:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:22:37,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:37,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220541114] [2023-08-04 08:22:37,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220541114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:37,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760573852] [2023-08-04 08:22:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:37,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:37,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:37,525 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) [2023-08-04 08:22:37,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 08:22:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:37,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:22:37,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:22:37,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:22:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:22:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760573852] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:22:37,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:22:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 08:22:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864358436] [2023-08-04 08:22:37,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:22:37,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:22:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:22:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:37,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 345 [2023-08-04 08:22:37,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:37,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:37,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 345 [2023-08-04 08:22:37,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:43,784 INFO L124 PetriNetUnfolderBase]: 17691/27603 cut-off events. [2023-08-04 08:22:43,785 INFO L125 PetriNetUnfolderBase]: For 5479/5479 co-relation queries the response was YES. [2023-08-04 08:22:43,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63363 conditions, 27603 events. 17691/27603 cut-off events. For 5479/5479 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 179924 event pairs, 10191 based on Foata normal form. 2/27581 useless extension candidates. Maximal degree in co-relation 48888. Up to 25640 conditions per place. [2023-08-04 08:22:43,896 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 56 selfloop transitions, 3 changer transitions 1/66 dead transitions. [2023-08-04 08:22:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 368 flow [2023-08-04 08:22:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:22:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:22:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 688 transitions. [2023-08-04 08:22:43,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985507246376812 [2023-08-04 08:22:43,898 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 688 transitions. [2023-08-04 08:22:43,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 688 transitions. [2023-08-04 08:22:43,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:43,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 688 transitions. [2023-08-04 08:22:43,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:43,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:43,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:43,900 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 238 flow. Second operand 4 states and 688 transitions. [2023-08-04 08:22:43,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 368 flow [2023-08-04 08:22:44,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:22:44,125 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 250 flow [2023-08-04 08:22:44,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-04 08:22:44,125 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-08-04 08:22:44,125 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 250 flow [2023-08-04 08:22:44,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:44,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:44,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:22:44,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-04 08:22:44,326 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 [2023-08-04 08:22:44,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:44,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash 577679314, now seen corresponding path program 1 times [2023-08-04 08:22:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:44,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083135060] [2023-08-04 08:22:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 08:22:44,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:44,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083135060] [2023-08-04 08:22:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083135060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:44,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768416074] [2023-08-04 08:22:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:44,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:44,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:44,393 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) [2023-08-04 08:22:44,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-04 08:22:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:44,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:22:44,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 08:22:44,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:22:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 08:22:44,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768416074] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:22:44,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:22:44,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 08:22:44,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766205637] [2023-08-04 08:22:44,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:22:44,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:22:44,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:44,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:22:44,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:44,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 345 [2023-08-04 08:22:44,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:44,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:44,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 345 [2023-08-04 08:22:44,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:50,368 INFO L124 PetriNetUnfolderBase]: 16839/26275 cut-off events. [2023-08-04 08:22:50,368 INFO L125 PetriNetUnfolderBase]: For 4623/4623 co-relation queries the response was YES. [2023-08-04 08:22:50,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60198 conditions, 26275 events. 16839/26275 cut-off events. For 4623/4623 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 171101 event pairs, 9864 based on Foata normal form. 8/26267 useless extension candidates. Maximal degree in co-relation 45955. Up to 24296 conditions per place. [2023-08-04 08:22:50,471 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 60 selfloop transitions, 3 changer transitions 1/70 dead transitions. [2023-08-04 08:22:50,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 396 flow [2023-08-04 08:22:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:22:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:22:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 692 transitions. [2023-08-04 08:22:50,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014492753623189 [2023-08-04 08:22:50,473 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 692 transitions. [2023-08-04 08:22:50,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 692 transitions. [2023-08-04 08:22:50,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:50,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 692 transitions. [2023-08-04 08:22:50,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:50,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:50,476 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:50,476 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 250 flow. Second operand 4 states and 692 transitions. [2023-08-04 08:22:50,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 396 flow [2023-08-04 08:22:50,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 386 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 08:22:50,618 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 254 flow [2023-08-04 08:22:50,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-04 08:22:50,618 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2023-08-04 08:22:50,618 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 254 flow [2023-08-04 08:22:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:50,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:50,619 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] [2023-08-04 08:22:50,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-04 08:22:50,824 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 [2023-08-04 08:22:50,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:50,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1438688216, now seen corresponding path program 1 times [2023-08-04 08:22:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279910717] [2023-08-04 08:22:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-04 08:22:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279910717] [2023-08-04 08:22:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279910717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912646292] [2023-08-04 08:22:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:50,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:50,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:50,884 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) [2023-08-04 08:22:50,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-04 08:22:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:51,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:22:51,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-04 08:22:51,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:22:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-04 08:22:51,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912646292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:22:51,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:22:51,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 08:22:51,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523152944] [2023-08-04 08:22:51,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:22:51,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:22:51,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:22:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:51,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 345 [2023-08-04 08:22:51,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:51,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:51,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 345 [2023-08-04 08:22:51,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:22:56,705 INFO L124 PetriNetUnfolderBase]: 16407/25603 cut-off events. [2023-08-04 08:22:56,705 INFO L125 PetriNetUnfolderBase]: For 4364/4364 co-relation queries the response was YES. [2023-08-04 08:22:56,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58010 conditions, 25603 events. 16407/25603 cut-off events. For 4364/4364 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 165237 event pairs, 9523 based on Foata normal form. 32/25619 useless extension candidates. Maximal degree in co-relation 43949. Up to 22968 conditions per place. [2023-08-04 08:22:56,841 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 64 selfloop transitions, 3 changer transitions 1/74 dead transitions. [2023-08-04 08:22:56,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 416 flow [2023-08-04 08:22:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:22:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:22:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 696 transitions. [2023-08-04 08:22:56,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043478260869565 [2023-08-04 08:22:56,843 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 696 transitions. [2023-08-04 08:22:56,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 696 transitions. [2023-08-04 08:22:56,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:22:56,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 696 transitions. [2023-08-04 08:22:56,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:56,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:56,845 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:56,846 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 254 flow. Second operand 4 states and 696 transitions. [2023-08-04 08:22:56,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 416 flow [2023-08-04 08:22:56,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 406 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 08:22:56,986 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 258 flow [2023-08-04 08:22:56,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-04 08:22:56,987 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2023-08-04 08:22:56,987 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 258 flow [2023-08-04 08:22:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:56,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:22:56,987 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] [2023-08-04 08:22:56,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-04 08:22:57,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:57,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:22:57,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:22:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1380002568, now seen corresponding path program 1 times [2023-08-04 08:22:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:22:57,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977529042] [2023-08-04 08:22:57,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:57,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:22:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 08:22:57,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:22:57,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977529042] [2023-08-04 08:22:57,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977529042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:22:57,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323314567] [2023-08-04 08:22:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:22:57,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:22:57,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:22:57,299 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) [2023-08-04 08:22:57,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-04 08:22:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:22:57,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:22:57,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:22:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 08:22:57,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:22:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 08:22:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323314567] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:22:57,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:22:57,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 08:22:57,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666053554] [2023-08-04 08:22:57,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:22:57,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:22:57,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:22:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:22:57,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:22:57,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 345 [2023-08-04 08:22:57,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:22:57,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:22:57,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 345 [2023-08-04 08:22:57,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:23:01,243 INFO L124 PetriNetUnfolderBase]: 10315/16383 cut-off events. [2023-08-04 08:23:01,244 INFO L125 PetriNetUnfolderBase]: For 3584/3584 co-relation queries the response was YES. [2023-08-04 08:23:01,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36927 conditions, 16383 events. 10315/16383 cut-off events. For 3584/3584 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 98880 event pairs, 5374 based on Foata normal form. 192/16559 useless extension candidates. Maximal degree in co-relation 32048. Up to 9425 conditions per place. [2023-08-04 08:23:01,311 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 71 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-04 08:23:01,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 461 flow [2023-08-04 08:23:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:23:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:23:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-04 08:23:01,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094202898550725 [2023-08-04 08:23:01,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-04 08:23:01,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-04 08:23:01,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:23:01,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-04 08:23:01,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:01,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:01,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:01,316 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 258 flow. Second operand 4 states and 703 transitions. [2023-08-04 08:23:01,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 461 flow [2023-08-04 08:23:01,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 450 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 08:23:01,393 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 268 flow [2023-08-04 08:23:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2023-08-04 08:23:01,394 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-04 08:23:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 268 flow [2023-08-04 08:23:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:01,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:23:01,394 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] [2023-08-04 08:23:01,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-04 08:23:01,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:01,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:23:01,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:23:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 347599336, now seen corresponding path program 1 times [2023-08-04 08:23:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:23:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374254758] [2023-08-04 08:23:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:01,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:23:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-04 08:23:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:23:01,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374254758] [2023-08-04 08:23:01,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374254758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:23:01,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697013025] [2023-08-04 08:23:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:01,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:01,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:23:01,683 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) [2023-08-04 08:23:01,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-04 08:23:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:01,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:23:01,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:23:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-04 08:23:01,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:23:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-04 08:23:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697013025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:23:01,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:23:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 08:23:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834409199] [2023-08-04 08:23:01,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:23:01,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:23:01,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:23:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:23:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:23:01,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 345 [2023-08-04 08:23:01,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 165.4) internal successors, (827), 5 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:01,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:23:01,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 345 [2023-08-04 08:23:01,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:23:05,311 INFO L124 PetriNetUnfolderBase]: 9415/14912 cut-off events. [2023-08-04 08:23:05,311 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-04 08:23:05,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35765 conditions, 14912 events. 9415/14912 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87995 event pairs, 5942 based on Foata normal form. 233/15129 useless extension candidates. Maximal degree in co-relation 34698. Up to 8732 conditions per place. [2023-08-04 08:23:05,360 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-04 08:23:05,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 82 transitions, 472 flow [2023-08-04 08:23:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:23:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:23:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-04 08:23:05,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094202898550725 [2023-08-04 08:23:05,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-04 08:23:05,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-04 08:23:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:23:05,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-04 08:23:05,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:05,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:05,365 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:05,365 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 268 flow. Second operand 4 states and 703 transitions. [2023-08-04 08:23:05,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 82 transitions, 472 flow [2023-08-04 08:23:05,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 08:23:05,422 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 284 flow [2023-08-04 08:23:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-08-04 08:23:05,423 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-08-04 08:23:05,423 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 284 flow [2023-08-04 08:23:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.4) internal successors, (827), 5 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:05,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:23:05,423 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] [2023-08-04 08:23:05,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-04 08:23:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:05,625 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:23:05,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:23:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash 814688630, now seen corresponding path program 1 times [2023-08-04 08:23:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:23:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368011048] [2023-08-04 08:23:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:23:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-04 08:23:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:23:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368011048] [2023-08-04 08:23:05,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368011048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:23:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928309391] [2023-08-04 08:23:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:23:05,730 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) [2023-08-04 08:23:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-04 08:23:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:05,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:23:05,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:23:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-04 08:23:05,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:23:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-04 08:23:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928309391] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:23:06,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:23:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 08:23:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680161317] [2023-08-04 08:23:06,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:23:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:23:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:23:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:23:06,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:23:06,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 345 [2023-08-04 08:23:06,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:06,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:23:06,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 345 [2023-08-04 08:23:06,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:23:09,490 INFO L124 PetriNetUnfolderBase]: 9409/14895 cut-off events. [2023-08-04 08:23:09,491 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-04 08:23:09,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37434 conditions, 14895 events. 9409/14895 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87813 event pairs, 8414 based on Foata normal form. 13/14892 useless extension candidates. Maximal degree in co-relation 36338. Up to 13453 conditions per place. [2023-08-04 08:23:09,542 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 71 selfloop transitions, 3 changer transitions 3/83 dead transitions. [2023-08-04 08:23:09,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 490 flow [2023-08-04 08:23:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:23:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:23:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-04 08:23:09,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094202898550725 [2023-08-04 08:23:09,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-04 08:23:09,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-04 08:23:09,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:23:09,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-04 08:23:09,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:09,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:09,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:09,548 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 284 flow. Second operand 4 states and 703 transitions. [2023-08-04 08:23:09,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 490 flow [2023-08-04 08:23:09,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 08:23:09,693 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 282 flow [2023-08-04 08:23:09,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2023-08-04 08:23:09,693 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-04 08:23:09,693 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 282 flow [2023-08-04 08:23:09,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:09,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:23:09,693 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] [2023-08-04 08:23:09,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-04 08:23:09,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:09,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:23:09,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:23:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2087047733, now seen corresponding path program 1 times [2023-08-04 08:23:09,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:23:09,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160919976] [2023-08-04 08:23:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:09,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:23:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-04 08:23:13,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:23:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160919976] [2023-08-04 08:23:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160919976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:23:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065305792] [2023-08-04 08:23:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:13,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:13,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:23:13,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:23:13,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-04 08:23:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:14,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-04 08:23:14,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:23:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-04 08:23:23,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:23:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-04 08:23:27,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065305792] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:23:27,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:23:27,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 12 [2023-08-04 08:23:27,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111055504] [2023-08-04 08:23:27,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:23:27,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-04 08:23:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:23:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-04 08:23:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-04 08:23:27,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-08-04 08:23:27,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 142.6153846153846) internal successors, (1854), 13 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:27,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:23:27,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-08-04 08:23:27,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:23:35,775 INFO L124 PetriNetUnfolderBase]: 15822/25098 cut-off events. [2023-08-04 08:23:35,775 INFO L125 PetriNetUnfolderBase]: For 16936/16936 co-relation queries the response was YES. [2023-08-04 08:23:35,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62438 conditions, 25098 events. 15822/25098 cut-off events. For 16936/16936 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 170079 event pairs, 2601 based on Foata normal form. 1/24998 useless extension candidates. Maximal degree in co-relation 62325. Up to 7041 conditions per place. [2023-08-04 08:23:35,858 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 240 selfloop transitions, 21 changer transitions 6/273 dead transitions. [2023-08-04 08:23:35,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 273 transitions, 1826 flow [2023-08-04 08:23:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 08:23:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 08:23:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1463 transitions. [2023-08-04 08:23:35,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711755233494364 [2023-08-04 08:23:35,862 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1463 transitions. [2023-08-04 08:23:35,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1463 transitions. [2023-08-04 08:23:35,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:23:35,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1463 transitions. [2023-08-04 08:23:35,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.55555555555554) internal successors, (1463), 9 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:35,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 345.0) internal successors, (3450), 10 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:35,866 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 345.0) internal successors, (3450), 10 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:35,866 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 282 flow. Second operand 9 states and 1463 transitions. [2023-08-04 08:23:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 273 transitions, 1826 flow [2023-08-04 08:23:36,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 273 transitions, 1773 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-04 08:23:36,202 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 429 flow [2023-08-04 08:23:36,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=429, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2023-08-04 08:23:36,202 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-04 08:23:36,202 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 429 flow [2023-08-04 08:23:36,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.6153846153846) internal successors, (1854), 13 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:36,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:23:36,203 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] [2023-08-04 08:23:36,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-04 08:23:36,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:36,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:23:36,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:23:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash 810862733, now seen corresponding path program 2 times [2023-08-04 08:23:36,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:23:36,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024141648] [2023-08-04 08:23:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:23:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:23:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:23:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-04 08:23:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:23:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024141648] [2023-08-04 08:23:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024141648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:23:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168939641] [2023-08-04 08:23:40,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 08:23:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:23:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:23:40,443 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:23:40,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-04 08:23:40,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 08:23:40,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 08:23:40,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 08:23:40,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:23:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-04 08:23:46,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:23:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-04 08:23:48,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168939641] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:23:48,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:23:48,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 12 [2023-08-04 08:23:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693301497] [2023-08-04 08:23:48,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:23:48,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-04 08:23:48,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:23:48,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-04 08:23:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-04 08:23:48,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-08-04 08:23:48,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 429 flow. Second operand has 13 states, 13 states have (on average 141.3846153846154) internal successors, (1838), 13 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:23:48,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:23:48,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-08-04 08:23:48,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:24:00,098 INFO L124 PetriNetUnfolderBase]: 24110/39316 cut-off events. [2023-08-04 08:24:00,098 INFO L125 PetriNetUnfolderBase]: For 108735/108735 co-relation queries the response was YES. [2023-08-04 08:24:00,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144217 conditions, 39316 events. 24110/39316 cut-off events. For 108735/108735 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 296752 event pairs, 3868 based on Foata normal form. 2/39177 useless extension candidates. Maximal degree in co-relation 144073. Up to 12062 conditions per place. [2023-08-04 08:24:00,321 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 156 selfloop transitions, 15 changer transitions 92/269 dead transitions. [2023-08-04 08:24:00,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 269 transitions, 1931 flow [2023-08-04 08:24:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 08:24:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 08:24:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1455 transitions. [2023-08-04 08:24:00,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46859903381642515 [2023-08-04 08:24:00,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1455 transitions. [2023-08-04 08:24:00,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1455 transitions. [2023-08-04 08:24:00,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:24:00,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1455 transitions. [2023-08-04 08:24:00,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.66666666666666) internal successors, (1455), 9 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:00,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 345.0) internal successors, (3450), 10 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:00,328 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 345.0) internal successors, (3450), 10 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:00,328 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 429 flow. Second operand 9 states and 1455 transitions. [2023-08-04 08:24:00,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 269 transitions, 1931 flow [2023-08-04 08:24:01,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 269 transitions, 1930 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:24:01,328 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 462 flow [2023-08-04 08:24:01,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2023-08-04 08:24:01,329 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2023-08-04 08:24:01,329 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 462 flow [2023-08-04 08:24:01,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.3846153846154) internal successors, (1838), 13 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:01,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:24:01,329 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] [2023-08-04 08:24:01,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-04 08:24:01,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:24:01,530 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:24:01,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:24:01,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1450972385, now seen corresponding path program 1 times [2023-08-04 08:24:01,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:24:01,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439957870] [2023-08-04 08:24:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:24:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:24:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:24:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-04 08:24:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:24:04,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439957870] [2023-08-04 08:24:04,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439957870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:24:04,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019700629] [2023-08-04 08:24:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:24:04,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:24:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:24:04,216 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:24:04,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-04 08:24:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:24:04,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-04 08:24:04,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:24:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-04 08:24:13,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:24:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-04 08:24:16,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019700629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:24:16,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:24:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 12 [2023-08-04 08:24:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382927734] [2023-08-04 08:24:16,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:24:16,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-04 08:24:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:24:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-04 08:24:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-04 08:24:16,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-08-04 08:24:16,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 462 flow. Second operand has 13 states, 13 states have (on average 142.3846153846154) internal successors, (1851), 13 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:16,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:24:16,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-08-04 08:24:16,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:24:23,378 INFO L124 PetriNetUnfolderBase]: 14128/25139 cut-off events. [2023-08-04 08:24:23,378 INFO L125 PetriNetUnfolderBase]: For 94574/94574 co-relation queries the response was YES. [2023-08-04 08:24:23,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99147 conditions, 25139 events. 14128/25139 cut-off events. For 94574/94574 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 202085 event pairs, 2473 based on Foata normal form. 1/25046 useless extension candidates. Maximal degree in co-relation 99096. Up to 9915 conditions per place. [2023-08-04 08:24:23,496 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 216 selfloop transitions, 21 changer transitions 26/269 dead transitions. [2023-08-04 08:24:23,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 269 transitions, 2045 flow [2023-08-04 08:24:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 08:24:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 08:24:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1447 transitions. [2023-08-04 08:24:23,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46602254428341383 [2023-08-04 08:24:23,499 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1447 transitions. [2023-08-04 08:24:23,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1447 transitions. [2023-08-04 08:24:23,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:24:23,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1447 transitions. [2023-08-04 08:24:23,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:23,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 345.0) internal successors, (3450), 10 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:23,503 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 345.0) internal successors, (3450), 10 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:23,503 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 462 flow. Second operand 9 states and 1447 transitions. [2023-08-04 08:24:23,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 269 transitions, 2045 flow [2023-08-04 08:24:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 269 transitions, 1965 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-08-04 08:24:24,007 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 592 flow [2023-08-04 08:24:24,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2023-08-04 08:24:24,008 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2023-08-04 08:24:24,008 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 592 flow [2023-08-04 08:24:24,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.3846153846154) internal successors, (1851), 13 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:24,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:24:24,008 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] [2023-08-04 08:24:24,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-04 08:24:24,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-04 08:24:24,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:24:24,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:24:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2055544619, now seen corresponding path program 1 times [2023-08-04 08:24:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:24:24,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568849441] [2023-08-04 08:24:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:24:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:24:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:24:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-04 08:24:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:24:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568849441] [2023-08-04 08:24:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568849441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:24:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341287934] [2023-08-04 08:24:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:24:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:24:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:24:27,412 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:24:27,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-04 08:24:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:24:27,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-04 08:24:27,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:24:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-04 08:24:32,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:24:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-04 08:24:34,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341287934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:24:34,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:24:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 10 [2023-08-04 08:24:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357743597] [2023-08-04 08:24:34,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:24:34,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-04 08:24:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:24:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-04 08:24:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-04 08:24:34,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-08-04 08:24:34,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 592 flow. Second operand has 11 states, 11 states have (on average 142.9090909090909) internal successors, (1572), 11 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:34,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:24:34,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-08-04 08:24:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:24:43,840 INFO L124 PetriNetUnfolderBase]: 20422/37502 cut-off events. [2023-08-04 08:24:43,840 INFO L125 PetriNetUnfolderBase]: For 215378/215378 co-relation queries the response was YES. [2023-08-04 08:24:44,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164980 conditions, 37502 events. 20422/37502 cut-off events. For 215378/215378 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 336093 event pairs, 3008 based on Foata normal form. 5/37341 useless extension candidates. Maximal degree in co-relation 164916. Up to 12214 conditions per place. [2023-08-04 08:24:44,069 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 227 selfloop transitions, 27 changer transitions 63/323 dead transitions. [2023-08-04 08:24:44,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 323 transitions, 2629 flow [2023-08-04 08:24:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-04 08:24:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-04 08:24:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1617 transitions. [2023-08-04 08:24:44,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46869565217391307 [2023-08-04 08:24:44,074 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1617 transitions. [2023-08-04 08:24:44,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1617 transitions. [2023-08-04 08:24:44,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:24:44,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1617 transitions. [2023-08-04 08:24:44,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.7) internal successors, (1617), 10 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:44,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 345.0) internal successors, (3795), 11 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:44,081 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 345.0) internal successors, (3795), 11 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:44,081 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 592 flow. Second operand 10 states and 1617 transitions. [2023-08-04 08:24:44,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 323 transitions, 2629 flow [2023-08-04 08:24:46,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 323 transitions, 2563 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-04 08:24:46,245 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 774 flow [2023-08-04 08:24:46,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=774, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2023-08-04 08:24:46,246 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 60 predicate places. [2023-08-04 08:24:46,246 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 774 flow [2023-08-04 08:24:46,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 142.9090909090909) internal successors, (1572), 11 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:46,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:24:46,246 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] [2023-08-04 08:24:46,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-04 08:24:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-04 08:24:46,447 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:24:46,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:24:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1354092419, now seen corresponding path program 1 times [2023-08-04 08:24:46,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:24:46,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453186127] [2023-08-04 08:24:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:24:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:24:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:24:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-04 08:24:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:24:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453186127] [2023-08-04 08:24:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453186127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:24:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347261202] [2023-08-04 08:24:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:24:49,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:24:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:24:49,803 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:24:49,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-04 08:24:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:24:50,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 08:24:50,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:24:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-04 08:24:54,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:24:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-04 08:24:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347261202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:24:56,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:24:56,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 14 [2023-08-04 08:24:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368044936] [2023-08-04 08:24:56,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:24:56,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-04 08:24:56,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:24:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-04 08:24:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-04 08:24:56,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-08-04 08:24:56,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 774 flow. Second operand has 15 states, 15 states have (on average 141.2) internal successors, (2118), 15 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:24:56,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:24:56,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-08-04 08:24:56,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:04,604 INFO L124 PetriNetUnfolderBase]: 16624/31172 cut-off events. [2023-08-04 08:25:04,604 INFO L125 PetriNetUnfolderBase]: For 217561/217561 co-relation queries the response was YES. [2023-08-04 08:25:04,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145292 conditions, 31172 events. 16624/31172 cut-off events. For 217561/217561 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 276950 event pairs, 3581 based on Foata normal form. 3/31073 useless extension candidates. Maximal degree in co-relation 145245. Up to 13672 conditions per place. [2023-08-04 08:25:04,816 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 98 selfloop transitions, 9 changer transitions 106/219 dead transitions. [2023-08-04 08:25:04,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 219 transitions, 1857 flow [2023-08-04 08:25:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 08:25:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 08:25:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1261 transitions. [2023-08-04 08:25:04,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568840579710145 [2023-08-04 08:25:04,818 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1261 transitions. [2023-08-04 08:25:04,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1261 transitions. [2023-08-04 08:25:04,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:04,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1261 transitions. [2023-08-04 08:25:04,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.625) internal successors, (1261), 8 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:04,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:04,822 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:04,822 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 774 flow. Second operand 8 states and 1261 transitions. [2023-08-04 08:25:04,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 219 transitions, 1857 flow [2023-08-04 08:25:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 219 transitions, 1797 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-04 08:25:06,650 INFO L231 Difference]: Finished difference. Result has 111 places, 77 transitions, 504 flow [2023-08-04 08:25:06,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=111, PETRI_TRANSITIONS=77} [2023-08-04 08:25:06,651 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2023-08-04 08:25:06,651 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 77 transitions, 504 flow [2023-08-04 08:25:06,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 141.2) internal successors, (2118), 15 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:06,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:06,651 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] [2023-08-04 08:25:06,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-04 08:25:06,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-04 08:25:06,858 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:25:06,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 176269397, now seen corresponding path program 2 times [2023-08-04 08:25:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221804807] [2023-08-04 08:25:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-04 08:25:08,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221804807] [2023-08-04 08:25:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221804807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:25:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:25:08,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 08:25:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760306508] [2023-08-04 08:25:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:25:08,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:25:08,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:25:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:25:08,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 345 [2023-08-04 08:25:08,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 77 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:08,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:08,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 345 [2023-08-04 08:25:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:11,772 INFO L124 PetriNetUnfolderBase]: 6327/12193 cut-off events. [2023-08-04 08:25:11,772 INFO L125 PetriNetUnfolderBase]: For 53596/53596 co-relation queries the response was YES. [2023-08-04 08:25:11,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49914 conditions, 12193 events. 6327/12193 cut-off events. For 53596/53596 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 97379 event pairs, 707 based on Foata normal form. 2/12126 useless extension candidates. Maximal degree in co-relation 49883. Up to 6492 conditions per place. [2023-08-04 08:25:11,816 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 0 selfloop transitions, 0 changer transitions 135/135 dead transitions. [2023-08-04 08:25:11,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 135 transitions, 1042 flow [2023-08-04 08:25:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 08:25:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 08:25:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 927 transitions. [2023-08-04 08:25:11,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44782608695652176 [2023-08-04 08:25:11,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 927 transitions. [2023-08-04 08:25:11,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 927 transitions. [2023-08-04 08:25:11,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:11,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 927 transitions. [2023-08-04 08:25:11,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:11,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:11,820 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:11,820 INFO L175 Difference]: Start difference. First operand has 111 places, 77 transitions, 504 flow. Second operand 6 states and 927 transitions. [2023-08-04 08:25:11,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 135 transitions, 1042 flow [2023-08-04 08:25:12,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 974 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-08-04 08:25:12,102 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2023-08-04 08:25:12,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2023-08-04 08:25:12,103 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-04 08:25:12,103 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2023-08-04 08:25:12,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:12,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 08:25:12,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-04 08:25:12,103 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:12,104 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 08:25:12,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 201 transitions, 492 flow [2023-08-04 08:25:12,319 INFO L124 PetriNetUnfolderBase]: 834/3976 cut-off events. [2023-08-04 08:25:12,319 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 08:25:12,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 3976 events. 834/3976 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31193 event pairs, 11 based on Foata normal form. 0/3386 useless extension candidates. Maximal degree in co-relation 2320. Up to 192 conditions per place. [2023-08-04 08:25:12,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 201 transitions, 492 flow [2023-08-04 08:25:12,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 136 transitions, 308 flow [2023-08-04 08:25:12,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:25:12,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 136 transitions, 308 flow [2023-08-04 08:25:12,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 136 transitions, 308 flow [2023-08-04 08:25:12,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 308 flow [2023-08-04 08:25:12,359 INFO L124 PetriNetUnfolderBase]: 12/515 cut-off events. [2023-08-04 08:25:12,359 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 08:25:12,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 515 events. 12/515 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2062 event pairs, 0 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 435. Up to 27 conditions per place. [2023-08-04 08:25:12,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-04 08:25:24,803 INFO L134 LiptonReduction]: Checked pairs total: 1405 [2023-08-04 08:25:24,803 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-04 08:25:24,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 08:25:24,804 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;@2a930100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:25:24,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 08:25:24,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:25:24,811 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2023-08-04 08:25:24,812 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 08:25:24,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:24,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:24,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:24,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1458597177, now seen corresponding path program 1 times [2023-08-04 08:25:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033340818] [2023-08-04 08:25:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:25:24,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033340818] [2023-08-04 08:25:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033340818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:25:24,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:25:24,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 08:25:24,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943212026] [2023-08-04 08:25:24,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:25:24,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:25:24,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:25:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:25:24,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 315 [2023-08-04 08:25:24,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:24,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:24,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 315 [2023-08-04 08:25:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:25,403 INFO L124 PetriNetUnfolderBase]: 1323/2188 cut-off events. [2023-08-04 08:25:25,403 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2023-08-04 08:25:25,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2188 events. 1323/2188 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10887 event pairs, 982 based on Foata normal form. 0/2116 useless extension candidates. Maximal degree in co-relation 2029. Up to 2006 conditions per place. [2023-08-04 08:25:25,410 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-04 08:25:25,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 140 flow [2023-08-04 08:25:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:25:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:25:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-04 08:25:25,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2023-08-04 08:25:25,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-04 08:25:25,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-04 08:25:25,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:25,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-04 08:25:25,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:25,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:25,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:25,413 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 88 flow. Second operand 3 states and 501 transitions. [2023-08-04 08:25:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 140 flow [2023-08-04 08:25:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 29 transitions, 134 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-04 08:25:25,413 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 94 flow [2023-08-04 08:25:25,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2023-08-04 08:25:25,414 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-04 08:25:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 94 flow [2023-08-04 08:25:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:25,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:25,414 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 08:25:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-04 08:25:25,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:25,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1017120756, now seen corresponding path program 1 times [2023-08-04 08:25:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121071881] [2023-08-04 08:25:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:25:25,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121071881] [2023-08-04 08:25:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121071881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:25:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317224492] [2023-08-04 08:25:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:25:25,438 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:25:25,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-04 08:25:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:25,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 08:25:25,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:25:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:25:25,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:25:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317224492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:25:25,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:25:25,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 08:25:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593260032] [2023-08-04 08:25:25,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:25:25,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:25:25,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:25:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 08:25:25,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 315 [2023-08-04 08:25:25,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:25,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:25,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 315 [2023-08-04 08:25:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:26,303 INFO L124 PetriNetUnfolderBase]: 1319/2178 cut-off events. [2023-08-04 08:25:26,303 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-08-04 08:25:26,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 2178 events. 1319/2178 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10884 event pairs, 756 based on Foata normal form. 4/2116 useless extension candidates. Maximal degree in co-relation 2658. Up to 1985 conditions per place. [2023-08-04 08:25:26,310 INFO L140 encePairwiseOnDemand]: 311/315 looper letters, 22 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-04 08:25:26,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 154 flow [2023-08-04 08:25:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 08:25:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 08:25:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2023-08-04 08:25:26,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187301587301587 [2023-08-04 08:25:26,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2023-08-04 08:25:26,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2023-08-04 08:25:26,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:26,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2023-08-04 08:25:26,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:26,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:26,314 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:26,314 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 94 flow. Second operand 5 states and 817 transitions. [2023-08-04 08:25:26,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 154 flow [2023-08-04 08:25:26,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:25:26,314 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 108 flow [2023-08-04 08:25:26,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-08-04 08:25:26,315 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-04 08:25:26,315 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 108 flow [2023-08-04 08:25:26,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:26,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:26,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:26,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-04 08:25:26,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:26,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:26,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash -680948253, now seen corresponding path program 1 times [2023-08-04 08:25:26,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931533493] [2023-08-04 08:25:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 08:25:26,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931533493] [2023-08-04 08:25:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931533493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:25:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448028792] [2023-08-04 08:25:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:26,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:26,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:25:26,544 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:25:26,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-04 08:25:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:26,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:25:26,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:25:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 08:25:26,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:25:26,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448028792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:25:26,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:25:26,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 08:25:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100700596] [2023-08-04 08:25:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:25:26,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:25:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:25:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:25:26,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 315 [2023-08-04 08:25:26,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:26,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:26,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 315 [2023-08-04 08:25:26,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:27,447 INFO L124 PetriNetUnfolderBase]: 1212/2017 cut-off events. [2023-08-04 08:25:27,447 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-04 08:25:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4307 conditions, 2017 events. 1212/2017 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9798 event pairs, 910 based on Foata normal form. 0/1957 useless extension candidates. Maximal degree in co-relation 1896. Up to 1773 conditions per place. [2023-08-04 08:25:27,453 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-04 08:25:27,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 32 transitions, 172 flow [2023-08-04 08:25:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:25:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:25:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-04 08:25:27,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322751322751322 [2023-08-04 08:25:27,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-04 08:25:27,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-04 08:25:27,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:27,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-04 08:25:27,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:27,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:27,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:27,457 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 108 flow. Second operand 3 states and 503 transitions. [2023-08-04 08:25:27,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 32 transitions, 172 flow [2023-08-04 08:25:27,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 32 transitions, 165 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 08:25:27,458 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 116 flow [2023-08-04 08:25:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2023-08-04 08:25:27,459 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-04 08:25:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 116 flow [2023-08-04 08:25:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:27,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-04 08:25:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:27,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:27,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1037653873, now seen corresponding path program 1 times [2023-08-04 08:25:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274910535] [2023-08-04 08:25:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:27,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 08:25:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274910535] [2023-08-04 08:25:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274910535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:25:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20640703] [2023-08-04 08:25:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:25:27,681 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:25:27,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-04 08:25:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:27,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:25:27,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:25:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 08:25:27,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:25:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 08:25:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20640703] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:25:27,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:25:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 08:25:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480394250] [2023-08-04 08:25:27,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:25:27,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:25:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:25:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:25:27,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 315 [2023-08-04 08:25:27,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:27,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:27,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 315 [2023-08-04 08:25:27,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:28,402 INFO L124 PetriNetUnfolderBase]: 876/1419 cut-off events. [2023-08-04 08:25:28,402 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-08-04 08:25:28,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 1419 events. 876/1419 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6154 event pairs, 476 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 1717. Up to 1269 conditions per place. [2023-08-04 08:25:28,407 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-04 08:25:28,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 31 transitions, 169 flow [2023-08-04 08:25:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:25:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:25:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 658 transitions. [2023-08-04 08:25:28,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2023-08-04 08:25:28,408 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 658 transitions. [2023-08-04 08:25:28,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 658 transitions. [2023-08-04 08:25:28,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:28,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 658 transitions. [2023-08-04 08:25:28,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:28,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:28,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:28,410 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 116 flow. Second operand 4 states and 658 transitions. [2023-08-04 08:25:28,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 31 transitions, 169 flow [2023-08-04 08:25:28,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 31 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:25:28,411 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 111 flow [2023-08-04 08:25:28,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-08-04 08:25:28,411 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-04 08:25:28,411 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 111 flow [2023-08-04 08:25:28,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:28,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:28,411 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:28,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-04 08:25:28,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-04 08:25:28,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:28,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1984193990, now seen corresponding path program 1 times [2023-08-04 08:25:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:28,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374985813] [2023-08-04 08:25:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 08:25:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374985813] [2023-08-04 08:25:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374985813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:25:28,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896783847] [2023-08-04 08:25:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:28,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:25:28,639 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:25:28,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-04 08:25:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:28,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 08:25:28,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:25:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 08:25:28,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:25:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896783847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:25:28,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:25:28,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 08:25:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272892063] [2023-08-04 08:25:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:25:28,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:25:28,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:25:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 08:25:28,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 315 [2023-08-04 08:25:28,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:28,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:28,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 315 [2023-08-04 08:25:28,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:29,335 INFO L124 PetriNetUnfolderBase]: 844/1371 cut-off events. [2023-08-04 08:25:29,335 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-08-04 08:25:29,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 1371 events. 844/1371 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5900 event pairs, 176 based on Foata normal form. 16/1363 useless extension candidates. Maximal degree in co-relation 1655. Up to 1100 conditions per place. [2023-08-04 08:25:29,340 INFO L140 encePairwiseOnDemand]: 311/315 looper letters, 29 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-04 08:25:29,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 197 flow [2023-08-04 08:25:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 08:25:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 08:25:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 823 transitions. [2023-08-04 08:25:29,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225396825396825 [2023-08-04 08:25:29,342 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 823 transitions. [2023-08-04 08:25:29,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 823 transitions. [2023-08-04 08:25:29,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:29,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 823 transitions. [2023-08-04 08:25:29,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:29,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:29,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:29,344 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 111 flow. Second operand 5 states and 823 transitions. [2023-08-04 08:25:29,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 197 flow [2023-08-04 08:25:29,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 08:25:29,345 INFO L231 Difference]: Finished difference. Result has 49 places, 27 transitions, 121 flow [2023-08-04 08:25:29,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=27} [2023-08-04 08:25:29,345 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2023-08-04 08:25:29,345 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 27 transitions, 121 flow [2023-08-04 08:25:29,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:29,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:29,345 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:29,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-04 08:25:29,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-04 08:25:29,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:29,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1409955194, now seen corresponding path program 1 times [2023-08-04 08:25:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840007035] [2023-08-04 08:25:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 08:25:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840007035] [2023-08-04 08:25:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840007035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:25:29,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458897503] [2023-08-04 08:25:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:29,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:29,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:25:29,574 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:25:29,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-04 08:25:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:29,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 08:25:29,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:25:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 08:25:29,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:25:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 08:25:29,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458897503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:25:29,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:25:29,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 08:25:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539828389] [2023-08-04 08:25:29,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:25:29,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 08:25:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:29,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 08:25:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:25:29,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 315 [2023-08-04 08:25:29,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 27 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:29,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:29,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 315 [2023-08-04 08:25:29,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:30,247 INFO L124 PetriNetUnfolderBase]: 632/1015 cut-off events. [2023-08-04 08:25:30,247 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-08-04 08:25:30,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1015 events. 632/1015 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3923 event pairs, 344 based on Foata normal form. 8/1007 useless extension candidates. Maximal degree in co-relation 1257. Up to 809 conditions per place. [2023-08-04 08:25:30,250 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 27 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-04 08:25:30,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 191 flow [2023-08-04 08:25:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:25:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:25:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 662 transitions. [2023-08-04 08:25:30,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253968253968254 [2023-08-04 08:25:30,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 662 transitions. [2023-08-04 08:25:30,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 662 transitions. [2023-08-04 08:25:30,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:30,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 662 transitions. [2023-08-04 08:25:30,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,253 INFO L175 Difference]: Start difference. First operand has 49 places, 27 transitions, 121 flow. Second operand 4 states and 662 transitions. [2023-08-04 08:25:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 191 flow [2023-08-04 08:25:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 08:25:30,254 INFO L231 Difference]: Finished difference. Result has 50 places, 26 transitions, 114 flow [2023-08-04 08:25:30,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=26} [2023-08-04 08:25:30,255 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2023-08-04 08:25:30,255 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 26 transitions, 114 flow [2023-08-04 08:25:30,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:25:30,255 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:30,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-04 08:25:30,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:25:30,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:25:30,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:25:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1770322913, now seen corresponding path program 1 times [2023-08-04 08:25:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:25:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762435073] [2023-08-04 08:25:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:25:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:25:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:25:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 08:25:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:25:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762435073] [2023-08-04 08:25:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762435073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:25:30,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:25:30,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 08:25:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996656720] [2023-08-04 08:25:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:25:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 08:25:30,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:25:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 08:25:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 08:25:30,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 315 [2023-08-04 08:25:30,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 26 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:25:30,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 315 [2023-08-04 08:25:30,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:25:30,756 INFO L124 PetriNetUnfolderBase]: 440/727 cut-off events. [2023-08-04 08:25:30,757 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-08-04 08:25:30,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 727 events. 440/727 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2562 event pairs, 104 based on Foata normal form. 64/775 useless extension candidates. Maximal degree in co-relation 1131. Up to 336 conditions per place. [2023-08-04 08:25:30,758 INFO L140 encePairwiseOnDemand]: 313/315 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-04 08:25:30,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 190 flow [2023-08-04 08:25:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 08:25:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 08:25:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 666 transitions. [2023-08-04 08:25:30,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2023-08-04 08:25:30,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 666 transitions. [2023-08-04 08:25:30,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 666 transitions. [2023-08-04 08:25:30,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:25:30,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 666 transitions. [2023-08-04 08:25:30,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,762 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,762 INFO L175 Difference]: Start difference. First operand has 50 places, 26 transitions, 114 flow. Second operand 4 states and 666 transitions. [2023-08-04 08:25:30,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 190 flow [2023-08-04 08:25:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 08:25:30,763 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-04 08:25:30,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-04 08:25:30,764 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-04 08:25:30,764 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-04 08:25:30,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 08:25:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 08:25:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 08:25:30,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 08:25:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-04 08:25:30,764 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:25:30,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (2/2) [2023-08-04 08:25:30,765 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 08:25:30,765 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 08:25:30,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 08:25:30 BasicIcfg [2023-08-04 08:25:30,769 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 08:25:30,769 INFO L158 Benchmark]: Toolchain (without parser) took 254696.90ms. Allocated memory was 683.7MB in the beginning and 7.0GB in the end (delta: 6.3GB). Free memory was 637.1MB in the beginning and 3.2GB in the end (delta: -2.6GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-08-04 08:25:30,769 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 421.5MB. Free memory is still 374.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 08:25:30,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.91ms. Allocated memory is still 683.7MB. Free memory was 637.1MB in the beginning and 624.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 08:25:30,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.49ms. Allocated memory is still 683.7MB. Free memory was 624.8MB in the beginning and 621.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 08:25:30,770 INFO L158 Benchmark]: Boogie Preprocessor took 31.25ms. Allocated memory is still 683.7MB. Free memory was 621.8MB in the beginning and 619.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 08:25:30,770 INFO L158 Benchmark]: RCFGBuilder took 1066.43ms. Allocated memory is still 683.7MB. Free memory was 619.4MB in the beginning and 543.3MB in the end (delta: 76.1MB). Peak memory consumption was 78.2MB. Max. memory is 16.0GB. [2023-08-04 08:25:30,770 INFO L158 Benchmark]: TraceAbstraction took 253316.69ms. Allocated memory was 683.7MB in the beginning and 7.0GB in the end (delta: 6.3GB). Free memory was 543.3MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2023-08-04 08:25:30,772 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 421.5MB. Free memory is still 374.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 229.91ms. Allocated memory is still 683.7MB. Free memory was 637.1MB in the beginning and 624.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.49ms. Allocated memory is still 683.7MB. Free memory was 624.8MB in the beginning and 621.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.25ms. Allocated memory is still 683.7MB. Free memory was 621.8MB in the beginning and 619.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1066.43ms. Allocated memory is still 683.7MB. Free memory was 619.4MB in the beginning and 543.3MB in the end (delta: 76.1MB). Peak memory consumption was 78.2MB. Max. memory is 16.0GB. * TraceAbstraction took 253316.69ms. Allocated memory was 683.7MB in the beginning and 7.0GB in the end (delta: 6.3GB). Free memory was 543.3MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.6s, 158 PlacesBefore, 35 PlacesAfterwards, 167 TransitionsBefore, 37 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 141 TotalNumberOfCompositions, 4327 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3523, independent: 3451, independent conditional: 0, independent unconditional: 3451, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 763, independent: 748, independent conditional: 0, independent unconditional: 748, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3523, independent: 2703, independent conditional: 0, independent unconditional: 2703, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 763, unknown conditional: 0, unknown unconditional: 763] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 129 PlacesBefore, 24 PlacesAfterwards, 124 TransitionsBefore, 17 TransitionsAfterwards, 486 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 111 TotalNumberOfCompositions, 357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 357, independent: 357, independent conditional: 0, independent unconditional: 357, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 235, independent: 235, independent conditional: 0, independent unconditional: 235, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 357, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 235, unknown conditional: 0, unknown unconditional: 235] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.0s, 176 PlacesBefore, 50 PlacesAfterwards, 188 TransitionsBefore, 55 TransitionsAfterwards, 2988 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 144 TotalNumberOfCompositions, 13687 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9879, independent: 9738, independent conditional: 0, independent unconditional: 9738, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1739, independent: 1720, independent conditional: 0, independent unconditional: 1720, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9879, independent: 8018, independent conditional: 0, independent unconditional: 8018, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 1739, unknown conditional: 0, unknown unconditional: 1739] , Statistics on independence cache: Total cache size (in pairs): 213, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.5s, 147 PlacesBefore, 39 PlacesAfterwards, 136 TransitionsBefore, 26 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 7 FixpointIterations, 75 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 1405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1124, independent: 1113, independent conditional: 0, independent unconditional: 1113, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 619, independent: 613, independent conditional: 0, independent unconditional: 613, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1124, independent: 500, independent conditional: 0, independent unconditional: 500, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 619, unknown conditional: 0, unknown unconditional: 619] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 100]: 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, 177 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: 13.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 486 IncrementalHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 19 mSDtfsCounter, 486 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=5, InterpolantAutomatonStates: 22, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 951 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 40/48 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, 189 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: 213.2s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 126.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2653 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2457 mSDsluCounter, 485 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 420 mSDsCounter, 212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6246 IncrementalHoareTripleChecker+Invalid, 6458 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 212 mSolverCounterUnsat, 65 mSDtfsCounter, 6246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1338 GetRequests, 1197 SyntacticMatches, 19 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=774occurred in iteration=16, InterpolantAutomatonStates: 93, 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: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 64.1s InterpolantComputationTime, 1408 NumberOfCodeBlocks, 1408 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1935 ConstructedInterpolants, 0 QuantifiedInterpolants, 40163 SizeOfPredicates, 264 NumberOfNonLiveVariables, 3670 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 45 InterpolantComputations, 7 PerfectInterpolantSequences, 803/882 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 for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 177 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: 8.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 34 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=57occurred 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, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 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 for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 189 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: 18.7s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 459 IncrementalHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 16 mSDtfsCounter, 459 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=5, InterpolantAutomatonStates: 28, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 744 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 124/141 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! [2023-08-04 08:25:30,795 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...