/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:40:38,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:40:38,666 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 01:40:38,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:40:38,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:40:38,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:40:38,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:40:38,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:40:38,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:40:38,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:40:38,706 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:40:38,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:40:38,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:40:38,707 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:40:38,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:40:38,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:40:38,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:40:38,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:40:38,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:40:38,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:40:38,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:40:38,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:40:38,713 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:40:38,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:40:38,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:40:38,713 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:40:38,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:40:38,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:40:38,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:40:38,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:40:38,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:40:38,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:40:38,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:40:38,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:40:38,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:40:38,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:40:38,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:40:38,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:40:38,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:40:38,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:40:38,993 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:40:38,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-08-24 01:40:40,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:40:40,238 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:40:40,239 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-08-24 01:40:40,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98dd085d5/9b1a8713166a45a39db3c2139e164f98/FLAGab24e6dd5 [2023-08-24 01:40:40,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98dd085d5/9b1a8713166a45a39db3c2139e164f98 [2023-08-24 01:40:40,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:40:40,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:40:40,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:40:40,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:40:40,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:40:40,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1448e623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40, skipping insertion in model container [2023-08-24 01:40:40,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,273 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:40:40,388 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/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2023-08-24 01:40:40,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:40:40,396 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:40:40,419 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/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2023-08-24 01:40:40,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:40:40,426 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:40:40,426 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:40:40,431 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:40:40,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40 WrapperNode [2023-08-24 01:40:40,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:40:40,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:40:40,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:40:40,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:40:40,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,465 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2023-08-24 01:40:40,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:40:40,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:40:40,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:40:40,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:40:40,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:40:40,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:40:40,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:40:40,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:40:40,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (1/1) ... [2023-08-24 01:40:40,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:40:40,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:40:40,525 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 01:40:40,553 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 01:40:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:40:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:40:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 01:40:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 01:40:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:40:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:40:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:40:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:40:40,582 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 01:40:40,643 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:40:40,645 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:40:40,803 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:40:40,843 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:40:40,843 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 01:40:40,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:40:40 BoogieIcfgContainer [2023-08-24 01:40:40,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:40:40,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:40:40,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:40:40,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:40:40,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:40:40" (1/3) ... [2023-08-24 01:40:40,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e42dede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:40:40, skipping insertion in model container [2023-08-24 01:40:40,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:40:40" (2/3) ... [2023-08-24 01:40:40,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e42dede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:40:40, skipping insertion in model container [2023-08-24 01:40:40,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:40:40" (3/3) ... [2023-08-24 01:40:40,855 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2023-08-24 01:40:40,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:40:40,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:40:40,867 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:40:40,933 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 01:40:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 198 flow [2023-08-24 01:40:41,005 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-08-24 01:40:41,005 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:40:41,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 7/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-24 01:40:41,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 91 transitions, 198 flow [2023-08-24 01:40:41,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 81 transitions, 174 flow [2023-08-24 01:40:41,016 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:40:41,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 81 transitions, 174 flow [2023-08-24 01:40:41,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 81 transitions, 174 flow [2023-08-24 01:40:41,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 81 transitions, 174 flow [2023-08-24 01:40:41,047 INFO L124 PetriNetUnfolderBase]: 7/81 cut-off events. [2023-08-24 01:40:41,047 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:40:41,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 7/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-24 01:40:41,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 252 [2023-08-24 01:40:42,763 INFO L134 LiptonReduction]: Checked pairs total: 309 [2023-08-24 01:40:42,763 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-24 01:40:42,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:40:42,776 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;@3875c34f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:40:42,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 01:40:42,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:40:42,780 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-24 01:40:42,780 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:40:42,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:40:42,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:40:42,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:40:42,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:40:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1332774993, now seen corresponding path program 1 times [2023-08-24 01:40:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:40:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879180541] [2023-08-24 01:40:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:40:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:40:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:40:42,995 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 01:40:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:40:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879180541] [2023-08-24 01:40:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879180541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:40:42,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:40:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 01:40:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69775316] [2023-08-24 01:40:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:40:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:40:43,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:40:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:40:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:40:43,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2023-08-24 01:40:43,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 01:40:43,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:40:43,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2023-08-24 01:40:43,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:40:43,063 INFO L124 PetriNetUnfolderBase]: 21/39 cut-off events. [2023-08-24 01:40:43,064 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 01:40:43,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 39 events. 21/39 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 9 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 60. Up to 39 conditions per place. [2023-08-24 01:40:43,065 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-24 01:40:43,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 60 flow [2023-08-24 01:40:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:40:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:40:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-08-24 01:40:43,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-08-24 01:40:43,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-08-24 01:40:43,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-08-24 01:40:43,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:40:43,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-08-24 01:40:43,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 01:40:43,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:40:43,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:40:43,091 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 238 transitions. [2023-08-24 01:40:43,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 60 flow [2023-08-24 01:40:43,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 52 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 01:40:43,094 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-24 01:40:43,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-24 01:40:43,097 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-08-24 01:40:43,097 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-24 01:40:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 01:40:43,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 01:40:43,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 01:40:43,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 01:40:43,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:40:43,100 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 01:40:43,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:40:43,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:40:43,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:40:43 BasicIcfg [2023-08-24 01:40:43,109 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:40:43,110 INFO L158 Benchmark]: Toolchain (without parser) took 2852.66ms. Allocated memory was 377.5MB in the beginning and 453.0MB in the end (delta: 75.5MB). Free memory was 353.0MB in the beginning and 396.1MB in the end (delta: -43.1MB). Peak memory consumption was 35.5MB. Max. memory is 16.0GB. [2023-08-24 01:40:43,110 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory is still 354.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:40:43,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.33ms. Allocated memory is still 377.5MB. Free memory was 353.0MB in the beginning and 341.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 01:40:43,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.71ms. Allocated memory is still 377.5MB. Free memory was 341.4MB in the beginning and 340.5MB in the end (delta: 946.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:40:43,112 INFO L158 Benchmark]: Boogie Preprocessor took 27.75ms. Allocated memory is still 377.5MB. Free memory was 340.5MB in the beginning and 338.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:40:43,112 INFO L158 Benchmark]: RCFGBuilder took 353.82ms. Allocated memory is still 377.5MB. Free memory was 338.5MB in the beginning and 321.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 01:40:43,112 INFO L158 Benchmark]: TraceAbstraction took 2258.12ms. Allocated memory was 377.5MB in the beginning and 453.0MB in the end (delta: 75.5MB). Free memory was 321.5MB in the beginning and 396.1MB in the end (delta: -74.6MB). Peak memory consumption was 4.0MB. Max. memory is 16.0GB. [2023-08-24 01:40:43,114 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory is still 354.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 174.33ms. Allocated memory is still 377.5MB. Free memory was 353.0MB in the beginning and 341.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.71ms. Allocated memory is still 377.5MB. Free memory was 341.4MB in the beginning and 340.5MB in the end (delta: 946.7kB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 27.75ms. Allocated memory is still 377.5MB. Free memory was 340.5MB in the beginning and 338.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 353.82ms. Allocated memory is still 377.5MB. Free memory was 338.5MB in the beginning and 321.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 2258.12ms. Allocated memory was 377.5MB in the beginning and 453.0MB in the end (delta: 75.5MB). Free memory was 321.5MB in the beginning and 396.1MB in the end (delta: -74.6MB). Peak memory consumption was 4.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 81 PlacesBefore, 18 PlacesAfterwards, 81 TransitionsBefore, 13 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 52 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 81 TotalNumberOfCompositions, 309 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 309, independent: 309, independent conditional: 0, independent unconditional: 309, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 132, independent: 132, independent conditional: 0, independent unconditional: 132, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 309, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 132, unknown conditional: 0, unknown unconditional: 132] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 84]: 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 5 procedures, 97 locations, 3 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: 2.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 01:40:43,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...