/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 15:45:54,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 15:45:54,717 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-VariableLbe.epf [2023-08-24 15:45:54,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 15:45:54,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 15:45:54,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 15:45:54,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 15:45:54,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 15:45:54,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 15:45:54,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 15:45:54,743 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 15:45:54,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 15:45:54,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 15:45:54,744 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 15:45:54,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 15:45:54,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 15:45:54,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 15:45:54,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 15:45:54,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 15:45:54,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 15:45:54,746 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 15:45:54,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 15:45:54,747 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 15:45:54,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 15:45:54,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 15:45:54,748 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 15:45:54,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 15:45:54,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 15:45:54,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 15:45:54,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 15:45:54,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 15:45:54,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 15:45:54,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 15:45:54,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 15:45:54,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 15:45:54,750 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 15:45:55,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 15:45:55,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 15:45:55,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 15:45:55,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 15:45:55,073 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 15:45:55,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-24 15:45:56,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 15:45:56,416 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 15:45:56,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-24 15:45:56,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa53463d3/67793ed37e9b49ca9bc542e880a5d2fe/FLAGa09de31e2 [2023-08-24 15:45:56,443 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa53463d3/67793ed37e9b49ca9bc542e880a5d2fe [2023-08-24 15:45:56,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 15:45:56,447 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 15:45:56,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 15:45:56,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 15:45:56,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 15:45:56,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8fa25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56, skipping insertion in model container [2023-08-24 15:45:56,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,470 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 15:45:56,653 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2023-08-24 15:45:56,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 15:45:56,671 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 15:45:56,707 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2023-08-24 15:45:56,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 15:45:56,715 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 15:45:56,716 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 15:45:56,723 INFO L206 MainTranslator]: Completed translation [2023-08-24 15:45:56,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56 WrapperNode [2023-08-24 15:45:56,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 15:45:56,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 15:45:56,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 15:45:56,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 15:45:56,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,776 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2023-08-24 15:45:56,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 15:45:56,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 15:45:56,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 15:45:56,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 15:45:56,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 15:45:56,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 15:45:56,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 15:45:56,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 15:45:56,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (1/1) ... [2023-08-24 15:45:56,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 15:45:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:45:56,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 15:45:56,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 15:45:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 15:45:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 15:45:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 15:45:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 15:45:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 15:45:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 15:45:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 15:45:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 15:45:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 15:45:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 15:45:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 15:45:56,881 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 15:45:56,969 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 15:45:56,970 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 15:45:57,301 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 15:45:57,362 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 15:45:57,362 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 15:45:57,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:45:57 BoogieIcfgContainer [2023-08-24 15:45:57,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 15:45:57,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 15:45:57,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 15:45:57,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 15:45:57,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 03:45:56" (1/3) ... [2023-08-24 15:45:57,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aeb2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:45:57, skipping insertion in model container [2023-08-24 15:45:57,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:45:56" (2/3) ... [2023-08-24 15:45:57,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aeb2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:45:57, skipping insertion in model container [2023-08-24 15:45:57,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:45:57" (3/3) ... [2023-08-24 15:45:57,376 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-08-24 15:45:57,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 15:45:57,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 15:45:57,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 15:45:57,477 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 15:45:57,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 143 transitions, 310 flow [2023-08-24 15:45:57,598 INFO L124 PetriNetUnfolderBase]: 10/140 cut-off events. [2023-08-24 15:45:57,598 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 15:45:57,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 10/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-24 15:45:57,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 143 transitions, 310 flow [2023-08-24 15:45:57,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 130 transitions, 278 flow [2023-08-24 15:45:57,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 15:45:57,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 130 transitions, 278 flow [2023-08-24 15:45:57,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 130 transitions, 278 flow [2023-08-24 15:45:57,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 130 transitions, 278 flow [2023-08-24 15:45:57,662 INFO L124 PetriNetUnfolderBase]: 10/130 cut-off events. [2023-08-24 15:45:57,663 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 15:45:57,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 10/130 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-24 15:45:57,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 1022 [2023-08-24 15:46:02,217 INFO L134 LiptonReduction]: Checked pairs total: 1255 [2023-08-24 15:46:02,217 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-24 15:46:02,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 15:46:02,232 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22341f6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 15:46:02,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 15:46:02,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 15:46:02,240 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 15:46:02,240 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 15:46:02,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:46:02,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:46:02,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:46:02,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:46:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash -207724774, now seen corresponding path program 1 times [2023-08-24 15:46:02,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:46:02,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664055988] [2023-08-24 15:46:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:46:02,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:46:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:46:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 15:46:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:46:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664055988] [2023-08-24 15:46:02,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664055988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:46:02,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:46:02,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 15:46:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552006509] [2023-08-24 15:46:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:46:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 15:46:02,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:46:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 15:46:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 15:46:02,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2023-08-24 15:46:02,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:02,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:46:02,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2023-08-24 15:46:02,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:46:02,867 INFO L124 PetriNetUnfolderBase]: 202/304 cut-off events. [2023-08-24 15:46:02,867 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-24 15:46:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 304 events. 202/304 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 935 event pairs, 92 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 533. Up to 231 conditions per place. [2023-08-24 15:46:02,871 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-24 15:46:02,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 146 flow [2023-08-24 15:46:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 15:46:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 15:46:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2023-08-24 15:46:02,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320754716981133 [2023-08-24 15:46:02,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 491 transitions. [2023-08-24 15:46:02,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 491 transitions. [2023-08-24 15:46:02,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:46:02,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 491 transitions. [2023-08-24 15:46:02,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:02,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:02,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:02,906 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 4 states and 491 transitions. [2023-08-24 15:46:02,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 146 flow [2023-08-24 15:46:02,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 15:46:02,910 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 64 flow [2023-08-24 15:46:02,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-24 15:46:02,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-08-24 15:46:02,914 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 64 flow [2023-08-24 15:46:02,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:02,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:46:02,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:46:02,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 15:46:02,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:46:02,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:46:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash 606369813, now seen corresponding path program 1 times [2023-08-24 15:46:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:46:02,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871330600] [2023-08-24 15:46:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:46:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:46:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:46:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 15:46:03,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:46:03,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871330600] [2023-08-24 15:46:03,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871330600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 15:46:03,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 15:46:03,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 15:46:03,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404226396] [2023-08-24 15:46:03,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:46:03,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 15:46:03,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:46:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 15:46:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 15:46:03,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 265 [2023-08-24 15:46:03,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:46:03,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 265 [2023-08-24 15:46:03,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:46:03,162 INFO L124 PetriNetUnfolderBase]: 202/305 cut-off events. [2023-08-24 15:46:03,162 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-24 15:46:03,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 305 events. 202/305 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 878 event pairs, 128 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 137. Up to 304 conditions per place. [2023-08-24 15:46:03,165 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-24 15:46:03,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 112 flow [2023-08-24 15:46:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 15:46:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 15:46:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-08-24 15:46:03,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176100628930818 [2023-08-24 15:46:03,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-08-24 15:46:03,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-08-24 15:46:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:46:03,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-08-24 15:46:03,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,176 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 64 flow. Second operand 3 states and 332 transitions. [2023-08-24 15:46:03,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 112 flow [2023-08-24 15:46:03,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 106 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 15:46:03,178 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 70 flow [2023-08-24 15:46:03,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-24 15:46:03,179 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-24 15:46:03,179 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 70 flow [2023-08-24 15:46:03,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:46:03,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:46:03,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 15:46:03,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:46:03,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:46:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2072943084, now seen corresponding path program 1 times [2023-08-24 15:46:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:46:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798310007] [2023-08-24 15:46:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:46:03,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:46:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:46:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:46:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:46:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798310007] [2023-08-24 15:46:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798310007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:46:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631871388] [2023-08-24 15:46:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:46:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:46:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:46:03,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:46:03,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 15:46:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:46:03,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 15:46:03,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:46:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:46:03,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:46:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:46:03,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631871388] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 15:46:03,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 15:46:03,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-24 15:46:03,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222058037] [2023-08-24 15:46:03,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 15:46:03,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 15:46:03,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:46:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 15:46:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-24 15:46:03,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 265 [2023-08-24 15:46:03,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:46:03,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 265 [2023-08-24 15:46:03,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:46:03,621 INFO L124 PetriNetUnfolderBase]: 174/277 cut-off events. [2023-08-24 15:46:03,621 INFO L125 PetriNetUnfolderBase]: For 23/46 co-relation queries the response was YES. [2023-08-24 15:46:03,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 277 events. 174/277 cut-off events. For 23/46 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 798 event pairs, 71 based on Foata normal form. 23/249 useless extension candidates. Maximal degree in co-relation 625. Up to 216 conditions per place. [2023-08-24 15:46:03,623 INFO L140 encePairwiseOnDemand]: 260/265 looper letters, 29 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-08-24 15:46:03,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 162 flow [2023-08-24 15:46:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 15:46:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 15:46:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2023-08-24 15:46:03,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41283018867924526 [2023-08-24 15:46:03,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2023-08-24 15:46:03,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2023-08-24 15:46:03,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:46:03,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2023-08-24 15:46:03,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,631 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,631 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 70 flow. Second operand 5 states and 547 transitions. [2023-08-24 15:46:03,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 162 flow [2023-08-24 15:46:03,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 15:46:03,632 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 82 flow [2023-08-24 15:46:03,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-24 15:46:03,633 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-24 15:46:03,633 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 82 flow [2023-08-24 15:46:03,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:03,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 15:46:03,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 15:46:03,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 15:46:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:46:03,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 15:46:03,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 15:46:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1741336163, now seen corresponding path program 1 times [2023-08-24 15:46:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 15:46:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674226087] [2023-08-24 15:46:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:46:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 15:46:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:46:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 15:46:04,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 15:46:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674226087] [2023-08-24 15:46:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674226087] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 15:46:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034973153] [2023-08-24 15:46:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 15:46:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 15:46:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 15:46:04,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 15:46:04,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 15:46:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 15:46:04,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 15:46:04,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 15:46:04,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-24 15:46:04,538 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:46:04,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2023-08-24 15:46:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:46:04,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 15:46:04,756 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 15:46:04,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 71 [2023-08-24 15:46:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 15:46:04,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034973153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 15:46:04,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 15:46:04,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-24 15:46:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597754392] [2023-08-24 15:46:04,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 15:46:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 15:46:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 15:46:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 15:46:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-24 15:46:04,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-24 15:46:04,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 82 flow. Second operand has 9 states, 9 states have (on average 112.11111111111111) internal successors, (1009), 9 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:04,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 15:46:04,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-24 15:46:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 15:46:05,068 INFO L124 PetriNetUnfolderBase]: 210/335 cut-off events. [2023-08-24 15:46:05,068 INFO L125 PetriNetUnfolderBase]: For 89/137 co-relation queries the response was YES. [2023-08-24 15:46:05,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 335 events. 210/335 cut-off events. For 89/137 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1066 event pairs, 6 based on Foata normal form. 50/311 useless extension candidates. Maximal degree in co-relation 883. Up to 105 conditions per place. [2023-08-24 15:46:05,070 INFO L140 encePairwiseOnDemand]: 259/265 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2023-08-24 15:46:05,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 70 transitions, 357 flow [2023-08-24 15:46:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 15:46:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 15:46:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 919 transitions. [2023-08-24 15:46:05,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43349056603773584 [2023-08-24 15:46:05,073 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 919 transitions. [2023-08-24 15:46:05,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 919 transitions. [2023-08-24 15:46:05,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 15:46:05,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 919 transitions. [2023-08-24 15:46:05,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.875) internal successors, (919), 8 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:05,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:05,080 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:05,080 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 82 flow. Second operand 8 states and 919 transitions. [2023-08-24 15:46:05,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 70 transitions, 357 flow [2023-08-24 15:46:05,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 70 transitions, 334 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-24 15:46:05,082 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-24 15:46:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-24 15:46:05,083 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-24 15:46:05,083 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-24 15:46:05,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.11111111111111) internal successors, (1009), 9 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 15:46:05,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 15:46:05,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 15:46:05,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 15:46:05,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 15:46:05,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 15:46:05,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 15:46:05,296 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-24 15:46:05,298 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 15:46:05,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 15:46:05,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 03:46:05 BasicIcfg [2023-08-24 15:46:05,301 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 15:46:05,302 INFO L158 Benchmark]: Toolchain (without parser) took 8854.65ms. Allocated memory was 362.8MB in the beginning and 444.6MB in the end (delta: 81.8MB). Free memory was 339.3MB in the beginning and 272.8MB in the end (delta: 66.5MB). Peak memory consumption was 149.6MB. Max. memory is 16.0GB. [2023-08-24 15:46:05,305 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 362.8MB. Free memory was 340.2MB in the beginning and 340.1MB in the end (delta: 83.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 15:46:05,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.01ms. Allocated memory is still 362.8MB. Free memory was 339.0MB in the beginning and 327.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 15:46:05,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.15ms. Allocated memory is still 362.8MB. Free memory was 327.6MB in the beginning and 325.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 15:46:05,308 INFO L158 Benchmark]: Boogie Preprocessor took 38.80ms. Allocated memory is still 362.8MB. Free memory was 325.7MB in the beginning and 324.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 15:46:05,308 INFO L158 Benchmark]: RCFGBuilder took 547.40ms. Allocated memory is still 362.8MB. Free memory was 324.2MB in the beginning and 304.7MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 15:46:05,309 INFO L158 Benchmark]: TraceAbstraction took 7935.43ms. Allocated memory was 362.8MB in the beginning and 444.6MB in the end (delta: 81.8MB). Free memory was 304.0MB in the beginning and 272.8MB in the end (delta: 31.2MB). Peak memory consumption was 114.0MB. Max. memory is 16.0GB. [2023-08-24 15:46:05,310 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 362.8MB. Free memory was 340.2MB in the beginning and 340.1MB in the end (delta: 83.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 278.01ms. Allocated memory is still 362.8MB. Free memory was 339.0MB in the beginning and 327.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.15ms. Allocated memory is still 362.8MB. Free memory was 327.6MB in the beginning and 325.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.80ms. Allocated memory is still 362.8MB. Free memory was 325.7MB in the beginning and 324.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 547.40ms. Allocated memory is still 362.8MB. Free memory was 324.2MB in the beginning and 304.7MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 7935.43ms. Allocated memory was 362.8MB in the beginning and 444.6MB in the end (delta: 81.8MB). Free memory was 304.0MB in the beginning and 272.8MB in the end (delta: 31.2MB). Peak memory consumption was 114.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 130 PlacesBefore, 29 PlacesAfterwards, 130 TransitionsBefore, 22 TransitionsAfterwards, 1022 CoEnabledTransitionPairs, 7 FixpointIterations, 72 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 122 TotalNumberOfCompositions, 1255 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1090, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 545, independent: 532, independent conditional: 0, independent unconditional: 532, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1090, independent: 531, independent conditional: 0, independent unconditional: 531, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 545, unknown conditional: 0, unknown unconditional: 545] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 161 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 337 IncrementalHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 3 mSDtfsCounter, 337 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 160 ConstructedInterpolants, 2 QuantifiedInterpolants, 671 SizeOfPredicates, 15 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 10/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 15:46:05,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...