/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:06:36,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:06:37,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:06:37,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:06:37,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:06:37,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:06:37,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:06:37,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:06:37,115 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:06:37,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:06:37,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:06:37,120 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:06:37,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:06:37,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:06:37,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:06:37,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:06:37,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:06:37,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:06:37,122 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:06:37,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:06:37,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:06:37,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:06:37,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:06:37,124 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:06:37,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:06:37,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:37,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:06:37,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:06:37,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:06:37,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:06:37,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:06:37,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:06:37,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:06:37,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:06:37,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:06:37,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:06:37,423 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:06:37,424 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:06:37,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-11-17 12:06:38,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:06:38,974 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:06:38,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-11-17 12:06:38,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f39ec2e0/bf010be8384546a29017eb361b6a1d37/FLAG1832d216e [2023-11-17 12:06:39,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f39ec2e0/bf010be8384546a29017eb361b6a1d37 [2023-11-17 12:06:39,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:06:39,012 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:06:39,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:39,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:06:39,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:06:39,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa45d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39, skipping insertion in model container [2023-11-17 12:06:39,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:06:39,206 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[2278,2291] [2023-11-17 12:06:39,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:39,225 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:06:39,258 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[2278,2291] [2023-11-17 12:06:39,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:39,265 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:39,266 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:39,272 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:06:39,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39 WrapperNode [2023-11-17 12:06:39,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:39,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:39,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:06:39,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:06:39,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,313 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2023-11-17 12:06:39,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:39,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:06:39,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:06:39,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:06:39,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:06:39,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:06:39,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:06:39,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:06:39,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (1/1) ... [2023-11-17 12:06:39,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:39,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:06:39,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:06:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:06:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:06:39,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:06:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:06:39,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:06:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:06:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:06:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:06:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:06:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:06:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:06:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:06:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:06:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:06:39,424 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:06:39,516 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:06:39,518 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:06:39,780 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:06:40,008 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:06:40,009 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 12:06:40,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:40 BoogieIcfgContainer [2023-11-17 12:06:40,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:06:40,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:06:40,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:06:40,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:06:40,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:06:39" (1/3) ... [2023-11-17 12:06:40,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16248702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:40, skipping insertion in model container [2023-11-17 12:06:40,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:39" (2/3) ... [2023-11-17 12:06:40,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16248702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:40, skipping insertion in model container [2023-11-17 12:06:40,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:40" (3/3) ... [2023-11-17 12:06:40,039 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2023-11-17 12:06:40,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:06:40,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:06:40,056 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:06:40,094 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 12:06:40,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 56 flow [2023-11-17 12:06:40,159 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2023-11-17 12:06:40,159 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:06:40,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2023-11-17 12:06:40,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 21 transitions, 56 flow [2023-11-17 12:06:40,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 48 flow [2023-11-17 12:06:40,175 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:06:40,187 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 18 transitions, 48 flow [2023-11-17 12:06:40,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 18 transitions, 48 flow [2023-11-17 12:06:40,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 48 flow [2023-11-17 12:06:40,213 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-11-17 12:06:40,214 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:06:40,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2023-11-17 12:06:40,216 INFO L119 LiptonReduction]: Number of co-enabled transitions 80 [2023-11-17 12:06:40,338 INFO L134 LiptonReduction]: Checked pairs total: 68 [2023-11-17 12:06:40,339 INFO L136 LiptonReduction]: Total number of compositions: 3 [2023-11-17 12:06:40,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:06:40,372 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35e3668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:06:40,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 12:06:40,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:06:40,381 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 12:06:40,382 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:06:40,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:40,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:40,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:40,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:40,388 INFO L85 PathProgramCache]: Analyzing trace with hash -697252230, now seen corresponding path program 1 times [2023-11-17 12:06:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31717891] [2023-11-17 12:06:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31717891] [2023-11-17 12:06:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31717891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:40,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:40,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:06:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484755980] [2023-11-17 12:06:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:40,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:40,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2023-11-17 12:06:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2023-11-17 12:06:40,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:40,816 INFO L124 PetriNetUnfolderBase]: 48/80 cut-off events. [2023-11-17 12:06:40,816 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 12:06:40,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 48/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 198 event pairs, 19 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 129. Up to 77 conditions per place. [2023-11-17 12:06:40,818 INFO L140 encePairwiseOnDemand]: 22/24 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-11-17 12:06:40,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 64 flow [2023-11-17 12:06:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2023-11-17 12:06:40,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-17 12:06:40,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 34 transitions. [2023-11-17 12:06:40,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 34 transitions. [2023-11-17 12:06:40,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:40,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 34 transitions. [2023-11-17 12:06:40,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:40,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:40,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:40,842 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 34 transitions. [2023-11-17 12:06:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 64 flow [2023-11-17 12:06:40,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:06:40,846 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-11-17 12:06:40,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-11-17 12:06:40,852 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-11-17 12:06:40,852 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-11-17 12:06:40,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:40,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 12:06:40,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 12:06:40,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 12:06:40,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:06:40,860 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 12:06:40,865 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:06:40,865 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:06:40,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:06:40 BasicIcfg [2023-11-17 12:06:40,874 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:06:40,874 INFO L158 Benchmark]: Toolchain (without parser) took 1862.72ms. Allocated memory is still 179.3MB. Free memory was 134.1MB in the beginning and 107.3MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-11-17 12:06:40,875 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 179.3MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:06:40,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.24ms. Allocated memory is still 179.3MB. Free memory was 134.1MB in the beginning and 123.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 12:06:40,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.30ms. Allocated memory is still 179.3MB. Free memory was 123.0MB in the beginning and 121.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:06:40,877 INFO L158 Benchmark]: Boogie Preprocessor took 25.18ms. Allocated memory is still 179.3MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:06:40,880 INFO L158 Benchmark]: RCFGBuilder took 671.54ms. Allocated memory is still 179.3MB. Free memory was 119.8MB in the beginning and 88.7MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-11-17 12:06:40,881 INFO L158 Benchmark]: TraceAbstraction took 842.22ms. Allocated memory is still 179.3MB. Free memory was 152.4MB in the beginning and 107.3MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-11-17 12:06:40,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 179.3MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.24ms. Allocated memory is still 179.3MB. Free memory was 134.1MB in the beginning and 123.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.30ms. Allocated memory is still 179.3MB. Free memory was 123.0MB in the beginning and 121.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.18ms. Allocated memory is still 179.3MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 671.54ms. Allocated memory is still 179.3MB. Free memory was 119.8MB in the beginning and 88.7MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 842.22ms. Allocated memory is still 179.3MB. Free memory was 152.4MB in the beginning and 107.3MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 23 PlacesBefore, 20 PlacesAfterwards, 18 TransitionsBefore, 15 TransitionsAfterwards, 80 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 68 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 68, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 44, independent: 44, independent conditional: 0, independent unconditional: 44, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 44, independent: 44, independent conditional: 0, independent unconditional: 44, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 68, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, 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]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 30 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: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, 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=42occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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! [2023-11-17 12:06:40,909 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...