/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:40:27,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:40:27,331 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:40:27,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:40:27,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:40:27,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:40:27,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:40:27,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:40:27,374 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:40:27,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:40:27,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:40:27,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:40:27,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:40:27,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:40:27,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:40:27,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:40:27,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:40:27,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:40:27,379 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:40:27,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:40:27,379 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:40:27,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:40:27,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:40:27,380 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:40:27,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:40:27,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:40:27,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:40:27,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:40:27,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:40:27,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:40:27,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:40:27,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:40:27,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:40:27,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:40:27,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:40:27,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:40:27,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:40:27,620 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:40:27,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-17 15:40:28,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:40:28,866 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:40:28,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-17 15:40:28,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1989370cb/da95072526d24393bfef71caa9de72c0/FLAGeac7a4833 [2023-11-17 15:40:28,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1989370cb/da95072526d24393bfef71caa9de72c0 [2023-11-17 15:40:28,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:40:28,892 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:40:28,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:40:28,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:40:28,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:40:28,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:40:28" (1/1) ... [2023-11-17 15:40:28,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd51b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:28, skipping insertion in model container [2023-11-17 15:40:28,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:40:28" (1/1) ... [2023-11-17 15:40:28,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:40:29,218 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-17 15:40:29,228 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,228 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,229 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,229 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:40:29,260 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:40:29,285 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-17 15:40:29,287 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,287 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,287 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,288 WARN L1588 CHandler]: Possible shadowing of function new [2023-11-17 15:40:29,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:40:29,377 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:40:29,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29 WrapperNode [2023-11-17 15:40:29,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:40:29,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:40:29,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:40:29,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:40:29,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,415 INFO L138 Inliner]: procedures = 279, calls = 72, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 333 [2023-11-17 15:40:29,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:40:29,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:40:29,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:40:29,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:40:29,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:40:29,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:40:29,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:40:29,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:40:29,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (1/1) ... [2023-11-17 15:40:29,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:40:29,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:40:29,477 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) [2023-11-17 15:40:29,496 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 [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 15:40:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:40:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 15:40:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:40:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:40:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:40:29,502 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:40:29,612 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:40:29,613 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:40:29,989 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:40:30,022 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:40:30,022 INFO L307 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-17 15:40:30,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:40:30 BoogieIcfgContainer [2023-11-17 15:40:30,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:40:30,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:40:30,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:40:30,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:40:30,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:40:28" (1/3) ... [2023-11-17 15:40:30,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12358088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:40:30, skipping insertion in model container [2023-11-17 15:40:30,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:29" (2/3) ... [2023-11-17 15:40:30,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12358088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:40:30, skipping insertion in model container [2023-11-17 15:40:30,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:40:30" (3/3) ... [2023-11-17 15:40:30,028 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-11-17 15:40:30,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:40:30,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:40:30,039 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:40:30,131 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 15:40:30,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 332 transitions, 684 flow [2023-11-17 15:40:30,324 INFO L124 PetriNetUnfolderBase]: 77/544 cut-off events. [2023-11-17 15:40:30,324 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:40:30,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 544 events. 77/544 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2570 event pairs, 0 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 279. Up to 8 conditions per place. [2023-11-17 15:40:30,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 332 transitions, 684 flow [2023-11-17 15:40:30,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 332 transitions, 684 flow [2023-11-17 15:40:30,348 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:40:30,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 332 transitions, 684 flow [2023-11-17 15:40:30,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 332 transitions, 684 flow [2023-11-17 15:40:30,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 332 transitions, 684 flow [2023-11-17 15:40:30,413 INFO L124 PetriNetUnfolderBase]: 77/544 cut-off events. [2023-11-17 15:40:30,413 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:40:30,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 544 events. 77/544 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2570 event pairs, 0 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 279. Up to 8 conditions per place. [2023-11-17 15:40:30,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 37430 [2023-11-17 15:41:16,231 INFO L134 LiptonReduction]: Checked pairs total: 54201 [2023-11-17 15:41:16,231 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-11-17 15:41:16,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:41:16,271 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@28ca8da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:41:16,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:41:16,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:41:16,274 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-11-17 15:41:16,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:16,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:16,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-17 15:41:16,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:16,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash 974898887, now seen corresponding path program 1 times [2023-11-17 15:41:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:16,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710283937] [2023-11-17 15:41:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:16,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:41:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710283937] [2023-11-17 15:41:16,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710283937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:16,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:16,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:41:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139945360] [2023-11-17 15:41:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:16,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:41:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:16,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:41:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:41:16,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 634 [2023-11-17 15:41:16,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 95 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:16,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:16,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 634 [2023-11-17 15:41:16,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:17,579 INFO L124 PetriNetUnfolderBase]: 6847/10580 cut-off events. [2023-11-17 15:41:17,579 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2023-11-17 15:41:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20720 conditions, 10580 events. 6847/10580 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 60233 event pairs, 5776 based on Foata normal form. 668/8919 useless extension candidates. Maximal degree in co-relation 19712. Up to 10010 conditions per place. [2023-11-17 15:41:17,627 INFO L140 encePairwiseOnDemand]: 610/634 looper letters, 65 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-17 15:41:17,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 308 flow [2023-11-17 15:41:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:41:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:41:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-11-17 15:41:17,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46004206098843325 [2023-11-17 15:41:17,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-11-17 15:41:17,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-11-17 15:41:17,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:17,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-11-17 15:41:17,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:17,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:17,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:17,655 INFO L175 Difference]: Start difference. First operand has 67 places, 95 transitions, 210 flow. Second operand 3 states and 875 transitions. [2023-11-17 15:41:17,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 308 flow [2023-11-17 15:41:17,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:41:17,660 INFO L231 Difference]: Finished difference. Result has 70 places, 75 transitions, 180 flow [2023-11-17 15:41:17,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2023-11-17 15:41:17,663 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-11-17 15:41:17,664 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 75 transitions, 180 flow [2023-11-17 15:41:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:17,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:17,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:41:17,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:17,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash 829257572, now seen corresponding path program 1 times [2023-11-17 15:41:17,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:17,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818364753] [2023-11-17 15:41:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:41:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818364753] [2023-11-17 15:41:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818364753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:17,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:17,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716214277] [2023-11-17 15:41:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:41:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:41:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:41:17,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 634 [2023-11-17 15:41:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 75 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 634 [2023-11-17 15:41:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:18,446 INFO L124 PetriNetUnfolderBase]: 6847/10582 cut-off events. [2023-11-17 15:41:18,446 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2023-11-17 15:41:18,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20731 conditions, 10582 events. 6847/10582 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 60270 event pairs, 5776 based on Foata normal form. 2/8258 useless extension candidates. Maximal degree in co-relation 20712. Up to 10013 conditions per place. [2023-11-17 15:41:18,488 INFO L140 encePairwiseOnDemand]: 631/634 looper letters, 64 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-17 15:41:18,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 314 flow [2023-11-17 15:41:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:41:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:41:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2023-11-17 15:41:18,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4526813880126183 [2023-11-17 15:41:18,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2023-11-17 15:41:18,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2023-11-17 15:41:18,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:18,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2023-11-17 15:41:18,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:18,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:18,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:18,496 INFO L175 Difference]: Start difference. First operand has 70 places, 75 transitions, 180 flow. Second operand 3 states and 861 transitions. [2023-11-17 15:41:18,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 314 flow [2023-11-17 15:41:18,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:18,498 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 192 flow [2023-11-17 15:41:18,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-11-17 15:41:18,499 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2023-11-17 15:41:18,502 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 192 flow [2023-11-17 15:41:18,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:18,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:18,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:41:18,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:18,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -613964293, now seen corresponding path program 1 times [2023-11-17 15:41:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:18,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073807745] [2023-11-17 15:41:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:18,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:41:18,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624013099] [2023-11-17 15:41:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:18,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:18,557 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) [2023-11-17 15:41:18,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:41:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:18,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:41:18,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:41:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:41:18,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:41:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:41:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073807745] [2023-11-17 15:41:18,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:41:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624013099] [2023-11-17 15:41:18,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624013099] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:41:18,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:41:18,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-17 15:41:18,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621257552] [2023-11-17 15:41:18,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 15:41:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:18,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:18,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 634 [2023-11-17 15:41:18,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 266.8333333333333) internal successors, (1601), 6 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:18,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:18,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 634 [2023-11-17 15:41:18,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:19,830 INFO L124 PetriNetUnfolderBase]: 6847/10588 cut-off events. [2023-11-17 15:41:19,831 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-11-17 15:41:19,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20759 conditions, 10588 events. 6847/10588 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 60230 event pairs, 5776 based on Foata normal form. 6/8268 useless extension candidates. Maximal degree in co-relation 20719. Up to 10013 conditions per place. [2023-11-17 15:41:19,869 INFO L140 encePairwiseOnDemand]: 631/634 looper letters, 64 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2023-11-17 15:41:19,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 342 flow [2023-11-17 15:41:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:41:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:41:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1661 transitions. [2023-11-17 15:41:19,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43664563617245006 [2023-11-17 15:41:19,873 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1661 transitions. [2023-11-17 15:41:19,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1661 transitions. [2023-11-17 15:41:19,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:19,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1661 transitions. [2023-11-17 15:41:19,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:19,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:19,882 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:19,882 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 192 flow. Second operand 6 states and 1661 transitions. [2023-11-17 15:41:19,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 342 flow [2023-11-17 15:41:19,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 338 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:19,885 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 230 flow [2023-11-17 15:41:19,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2023-11-17 15:41:19,886 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-11-17 15:41:19,887 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 230 flow [2023-11-17 15:41:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.8333333333333) internal successors, (1601), 6 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:19,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:19,888 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:19,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:41:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:20,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:20,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -170924764, now seen corresponding path program 2 times [2023-11-17 15:41:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705233702] [2023-11-17 15:41:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:20,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:41:20,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574577204] [2023-11-17 15:41:20,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:41:20,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:20,184 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) [2023-11-17 15:41:20,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:41:20,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:41:20,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:41:20,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:41:20,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:41:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:41:20,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:41:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:41:20,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:20,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705233702] [2023-11-17 15:41:20,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:41:20,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574577204] [2023-11-17 15:41:20,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574577204] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:41:20,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:41:20,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-17 15:41:20,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117193204] [2023-11-17 15:41:20,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 15:41:20,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:41:20,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:20,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:41:20,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:41:20,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 634 [2023-11-17 15:41:20,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 266.4166666666667) internal successors, (3197), 12 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:20,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:20,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 634 [2023-11-17 15:41:20,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:21,646 INFO L124 PetriNetUnfolderBase]: 6847/10600 cut-off events. [2023-11-17 15:41:21,646 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2023-11-17 15:41:21,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20830 conditions, 10600 events. 6847/10600 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 60319 event pairs, 5776 based on Foata normal form. 12/8286 useless extension candidates. Maximal degree in co-relation 20715. Up to 10013 conditions per place. [2023-11-17 15:41:21,684 INFO L140 encePairwiseOnDemand]: 631/634 looper letters, 64 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2023-11-17 15:41:21,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 416 flow [2023-11-17 15:41:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:41:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:41:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3260 transitions. [2023-11-17 15:41:21,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284963196635121 [2023-11-17 15:41:21,691 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3260 transitions. [2023-11-17 15:41:21,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3260 transitions. [2023-11-17 15:41:21,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:21,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3260 transitions. [2023-11-17 15:41:21,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 271.6666666666667) internal successors, (3260), 12 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:21,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 634.0) internal successors, (8242), 13 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:21,707 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 634.0) internal successors, (8242), 13 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:21,707 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 230 flow. Second operand 12 states and 3260 transitions. [2023-11-17 15:41:21,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 416 flow [2023-11-17 15:41:21,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 402 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:21,710 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 312 flow [2023-11-17 15:41:21,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=312, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2023-11-17 15:41:21,712 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2023-11-17 15:41:21,712 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 312 flow [2023-11-17 15:41:21,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.4166666666667) internal successors, (3197), 12 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:21,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:21,713 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:21,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:41:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 15:41:21,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash -856005180, now seen corresponding path program 3 times [2023-11-17 15:41:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079596442] [2023-11-17 15:41:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:22,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:41:22,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942064870] [2023-11-17 15:41:22,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:41:22,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:22,023 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) [2023-11-17 15:41:22,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:41:22,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:41:22,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:41:22,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:41:22,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:41:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:41:22,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:41:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-17 15:41:22,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:22,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079596442] [2023-11-17 15:41:22,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:41:22,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942064870] [2023-11-17 15:41:22,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942064870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:41:22,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:41:22,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-17 15:41:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561727166] [2023-11-17 15:41:22,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 15:41:22,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:22,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:22,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 634 [2023-11-17 15:41:22,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 264.1666666666667) internal successors, (1585), 6 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:22,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:22,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 634 [2023-11-17 15:41:22,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:23,614 INFO L124 PetriNetUnfolderBase]: 6857/10659 cut-off events. [2023-11-17 15:41:23,614 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2023-11-17 15:41:23,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21055 conditions, 10659 events. 6857/10659 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 60398 event pairs, 5776 based on Foata normal form. 3/8348 useless extension candidates. Maximal degree in co-relation 20748. Up to 10007 conditions per place. [2023-11-17 15:41:23,659 INFO L140 encePairwiseOnDemand]: 630/634 looper letters, 108 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-11-17 15:41:23,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 889 flow [2023-11-17 15:41:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:41:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:41:23,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1649 transitions. [2023-11-17 15:41:23,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43349106203995796 [2023-11-17 15:41:23,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1649 transitions. [2023-11-17 15:41:23,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1649 transitions. [2023-11-17 15:41:23,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:23,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1649 transitions. [2023-11-17 15:41:23,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.8333333333333) internal successors, (1649), 6 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:23,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:23,670 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:23,670 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 312 flow. Second operand 6 states and 1649 transitions. [2023-11-17 15:41:23,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 889 flow [2023-11-17 15:41:23,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 124 transitions, 695 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-17 15:41:23,675 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 347 flow [2023-11-17 15:41:23,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-11-17 15:41:23,676 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 32 predicate places. [2023-11-17 15:41:23,676 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 347 flow [2023-11-17 15:41:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.1666666666667) internal successors, (1585), 6 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:23,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:23,677 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 15:41:23,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-17 15:41:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:23,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:23,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1639828923, now seen corresponding path program 4 times [2023-11-17 15:41:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:23,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706072437] [2023-11-17 15:41:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:23,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:24,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:41:24,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064622133] [2023-11-17 15:41:24,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:41:24,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:24,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:24,482 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) [2023-11-17 15:41:24,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:41:25,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:41:25,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:41:25,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:41:25,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:41:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-17 15:41:25,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:41:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-17 15:41:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706072437] [2023-11-17 15:41:25,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:41:25,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064622133] [2023-11-17 15:41:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064622133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:41:25,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:41:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-17 15:41:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889460725] [2023-11-17 15:41:25,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 15:41:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 15:41:25,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 15:41:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-17 15:41:25,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 634 [2023-11-17 15:41:25,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 266.3333333333333) internal successors, (6392), 24 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:25,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:25,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 634 [2023-11-17 15:41:25,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:27,661 INFO L124 PetriNetUnfolderBase]: 6857/10707 cut-off events. [2023-11-17 15:41:27,662 INFO L125 PetriNetUnfolderBase]: For 3721/3721 co-relation queries the response was YES. [2023-11-17 15:41:27,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21171 conditions, 10707 events. 6857/10707 cut-off events. For 3721/3721 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 60434 event pairs, 5776 based on Foata normal form. 48/8441 useless extension candidates. Maximal degree in co-relation 20753. Up to 10019 conditions per place. [2023-11-17 15:41:27,698 INFO L140 encePairwiseOnDemand]: 631/634 looper letters, 66 selfloop transitions, 24 changer transitions 0/100 dead transitions. [2023-11-17 15:41:27,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 100 transitions, 599 flow [2023-11-17 15:41:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 15:41:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 15:41:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6458 transitions. [2023-11-17 15:41:27,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42442166140904314 [2023-11-17 15:41:27,709 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6458 transitions. [2023-11-17 15:41:27,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6458 transitions. [2023-11-17 15:41:27,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:27,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6458 transitions. [2023-11-17 15:41:27,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 269.0833333333333) internal successors, (6458), 24 states have internal predecessors, (6458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:27,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 634.0) internal successors, (15850), 25 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:27,757 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 634.0) internal successors, (15850), 25 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:27,757 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 347 flow. Second operand 24 states and 6458 transitions. [2023-11-17 15:41:27,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 100 transitions, 599 flow [2023-11-17 15:41:27,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 100 transitions, 591 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:27,763 INFO L231 Difference]: Finished difference. Result has 133 places, 100 transitions, 581 flow [2023-11-17 15:41:27,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=581, PETRI_PLACES=133, PETRI_TRANSITIONS=100} [2023-11-17 15:41:27,764 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 66 predicate places. [2023-11-17 15:41:27,764 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 100 transitions, 581 flow [2023-11-17 15:41:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 266.3333333333333) internal successors, (6392), 24 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:27,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:27,766 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-17 15:41:27,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:41:27,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:27,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:41:27,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1958788539, now seen corresponding path program 5 times [2023-11-17 15:41:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:27,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208211205] [2023-11-17 15:41:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:28,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:41:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100145240] [2023-11-17 15:41:28,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:41:28,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:41:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:28,898 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) [2023-11-17 15:41:28,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-11-17 15:50:09,510 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 15:50:09,541 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 15:50:10,581 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 [2023-11-17 15:50:10,742 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-11-17 15:50:10,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-11-17 15:50:10,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-11-17 15:50:10,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-17 15:50:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:50:10,767 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-11-17 15:50:10,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 15:50:10,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 15:50:10,769 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 15:50:10,769 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 15:50:10,769 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 15:50:10,769 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-11-17 15:50:10,772 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:50:10,772 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:50:10,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:50:10 BasicIcfg [2023-11-17 15:50:10,775 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:50:10,776 INFO L158 Benchmark]: Toolchain (without parser) took 581883.91ms. Allocated memory was 318.8MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 259.9MB in the beginning and 2.1GB in the end (delta: -1.8GB). Peak memory consumption was 665.9MB. Max. memory is 8.0GB. [2023-11-17 15:50:10,776 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:50:10,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.01ms. Allocated memory is still 318.8MB. Free memory was 259.9MB in the beginning and 279.5MB in the end (delta: -19.6MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. [2023-11-17 15:50:10,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.44ms. Allocated memory is still 318.8MB. Free memory was 279.5MB in the beginning and 276.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:50:10,776 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 318.8MB. Free memory was 275.9MB in the beginning and 273.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:50:10,777 INFO L158 Benchmark]: RCFGBuilder took 568.82ms. Allocated memory is still 318.8MB. Free memory was 273.2MB in the beginning and 240.7MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-11-17 15:50:10,777 INFO L158 Benchmark]: TraceAbstraction took 580750.96ms. Allocated memory was 318.8MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 240.2MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 645.2MB. Max. memory is 8.0GB. [2023-11-17 15:50:10,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 485.01ms. Allocated memory is still 318.8MB. Free memory was 259.9MB in the beginning and 279.5MB in the end (delta: -19.6MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.44ms. Allocated memory is still 318.8MB. Free memory was 279.5MB in the beginning and 276.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.01ms. Allocated memory is still 318.8MB. Free memory was 275.9MB in the beginning and 273.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 568.82ms. Allocated memory is still 318.8MB. Free memory was 273.2MB in the beginning and 240.7MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 580750.96ms. Allocated memory was 318.8MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 240.2MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 645.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.9s, 291 PlacesBefore, 67 PlacesAfterwards, 332 TransitionsBefore, 95 TransitionsAfterwards, 37430 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 170 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 44 ConcurrentYvCompositions, 13 ChoiceCompositions, 302 TotalNumberOfCompositions, 54201 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35864, independent: 35504, independent conditional: 0, independent unconditional: 35504, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 32, unknown conditional: 0, unknown unconditional: 32] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 23411, independent: 23303, independent conditional: 0, independent unconditional: 23303, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 13, unknown conditional: 0, unknown unconditional: 13] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 23411, independent: 23069, independent conditional: 0, independent unconditional: 23069, dependent: 342, dependent conditional: 0, dependent unconditional: 342, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 342, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 13, unknown conditional: 0, unknown unconditional: 13] , SemanticIndependenceRelation.Query Time [ms]: [ total: 28791, independent: 156, independent conditional: 0, independent unconditional: 156, dependent: 522, dependent conditional: 0, dependent unconditional: 522, unknown: 28113, unknown conditional: 0, unknown unconditional: 28113] ], Cache Queries: [ total: 35864, independent: 12201, independent conditional: 0, independent unconditional: 12201, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 23430, unknown conditional: 0, unknown unconditional: 23430] , Statistics on independence cache: Total cache size (in pairs): 1107, Positive cache size: 1071, Positive conditional cache size: 0, Positive unconditional cache size: 1071, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 2, Unknown conditional cache size: 0, Unknown unconditional cache size: 2 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 445 locations, 6 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: 580.6s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 46.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1296 IncrementalHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 1296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=581occurred in iteration=6, InterpolantAutomatonStates: 54, 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, 0.6s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4471 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown