/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/goblint-regression/28-race_reach_94-alloc_region_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:43:07,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:43:07,523 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 11:43:07,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:43:07,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:43:07,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:43:07,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:43:07,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:43:07,542 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:43:07,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:43:07,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:43:07,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:43:07,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:43:07,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:43:07,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:43:07,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:43:07,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:43:07,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:43:07,548 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:43:07,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:43:07,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:43:07,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:43:07,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:43:07,549 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:43:07,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:43:07,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:43:07,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:43:07,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:43:07,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:43:07,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:43:07,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:43:07,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:43:07,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:43:07,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:43:07,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:43:07,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:43:07,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:43:07,732 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:43:07,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-17 11:43:08,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:43:09,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:43:09,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-17 11:43:09,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03c97a0b/3782bae48ea6487798ed34e275155b12/FLAGa7a60d8a8 [2023-11-17 11:43:09,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03c97a0b/3782bae48ea6487798ed34e275155b12 [2023-11-17 11:43:09,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:43:09,186 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:43:09,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:43:09,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:43:09,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:43:09,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfb770b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09, skipping insertion in model container [2023-11-17 11:43:09,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:43:09,602 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-11-17 11:43:09,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:43:09,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:43:09,678 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-11-17 11:43:09,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:43:09,775 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:43:09,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09 WrapperNode [2023-11-17 11:43:09,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:43:09,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:43:09,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:43:09,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:43:09,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,825 INFO L138 Inliner]: procedures = 378, calls = 82, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 269 [2023-11-17 11:43:09,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:43:09,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:43:09,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:43:09,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:43:09,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:43:09,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:43:09,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:43:09,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:43:09,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (1/1) ... [2023-11-17 11:43:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:43:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:09,874 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 11:43:09,900 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 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-17 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:43:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:43:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:43:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:43:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:43:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:43:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 11:43:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 11:43:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:43:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:43:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:43:09,919 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 11:43:10,025 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:43:10,027 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:43:10,368 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:43:10,616 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:43:10,616 INFO L307 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-17 11:43:10,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:43:10 BoogieIcfgContainer [2023-11-17 11:43:10,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:43:10,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:43:10,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:43:10,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:43:10,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:43:09" (1/3) ... [2023-11-17 11:43:10,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5135d3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:43:10, skipping insertion in model container [2023-11-17 11:43:10,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:09" (2/3) ... [2023-11-17 11:43:10,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5135d3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:43:10, skipping insertion in model container [2023-11-17 11:43:10,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:43:10" (3/3) ... [2023-11-17 11:43:10,624 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-17 11:43:10,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:43:10,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:43:10,639 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:43:10,689 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 11:43:10,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 104 transitions, 215 flow [2023-11-17 11:43:10,778 INFO L124 PetriNetUnfolderBase]: 41/157 cut-off events. [2023-11-17 11:43:10,778 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:43:10,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 157 events. 41/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 582 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2023-11-17 11:43:10,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 104 transitions, 215 flow [2023-11-17 11:43:10,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 102 transitions, 208 flow [2023-11-17 11:43:10,790 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:43:10,801 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 102 transitions, 208 flow [2023-11-17 11:43:10,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 102 transitions, 208 flow [2023-11-17 11:43:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 102 transitions, 208 flow [2023-11-17 11:43:10,824 INFO L124 PetriNetUnfolderBase]: 40/155 cut-off events. [2023-11-17 11:43:10,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:10,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 155 events. 40/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 558 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2023-11-17 11:43:10,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 4950 [2023-11-17 11:43:23,964 INFO L134 LiptonReduction]: Checked pairs total: 12932 [2023-11-17 11:43:23,964 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-11-17 11:43:23,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:43:24,012 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;@3bd36dd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:43:24,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:43:24,016 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:43:24,016 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:43:24,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:24,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:24,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 11:43:24,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 11:43:24,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash -916600675, now seen corresponding path program 1 times [2023-11-17 11:43:24,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:24,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905621952] [2023-11-17 11:43:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:43:24,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:43:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:43:24,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:43:24,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:43:24,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-17 11:43:24,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 11:43:24,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-17 11:43:24,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 11:43:24,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:43:24,179 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:43:24,182 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:43:24,182 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 11:43:24,222 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:43:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 151 transitions, 318 flow [2023-11-17 11:43:24,268 INFO L124 PetriNetUnfolderBase]: 69/264 cut-off events. [2023-11-17 11:43:24,269 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 11:43:24,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 264 events. 69/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1207 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2023-11-17 11:43:24,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 151 transitions, 318 flow [2023-11-17 11:43:24,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 151 transitions, 318 flow [2023-11-17 11:43:24,277 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:43:24,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 151 transitions, 318 flow [2023-11-17 11:43:24,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 151 transitions, 318 flow [2023-11-17 11:43:24,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 151 transitions, 318 flow [2023-11-17 11:43:24,297 INFO L124 PetriNetUnfolderBase]: 69/264 cut-off events. [2023-11-17 11:43:24,298 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 11:43:24,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 264 events. 69/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1207 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2023-11-17 11:43:24,306 INFO L119 LiptonReduction]: Number of co-enabled transitions 14400 [2023-11-17 11:43:59,990 INFO L134 LiptonReduction]: Checked pairs total: 49106 [2023-11-17 11:43:59,990 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-11-17 11:43:59,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:43:59,993 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;@3bd36dd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:43:59,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:43:59,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:43:59,998 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-11-17 11:43:59,998 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:43:59,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:59,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-17 11:43:59,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:43:59,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash 860812840, now seen corresponding path program 1 times [2023-11-17 11:44:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:44:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420902583] [2023-11-17 11:44:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:44:00,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:44:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:44:00,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:44:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:44:00,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:44:00,089 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:44:00,089 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-17 11:44:00,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:44:00,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-17 11:44:00,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 11:44:00,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:44:00,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:44:00,090 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:44:00,090 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:44:00,090 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-17 11:44:00,130 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 11:44:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 198 transitions, 423 flow [2023-11-17 11:44:00,173 INFO L124 PetriNetUnfolderBase]: 100/382 cut-off events. [2023-11-17 11:44:00,174 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-17 11:44:00,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 382 events. 100/382 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1928 event pairs, 1 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-11-17 11:44:00,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 198 transitions, 423 flow [2023-11-17 11:44:00,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 198 transitions, 423 flow [2023-11-17 11:44:00,181 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:44:00,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 198 transitions, 423 flow [2023-11-17 11:44:00,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 198 transitions, 423 flow [2023-11-17 11:44:00,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 198 transitions, 423 flow [2023-11-17 11:44:00,214 INFO L124 PetriNetUnfolderBase]: 100/382 cut-off events. [2023-11-17 11:44:00,214 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-17 11:44:00,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 382 events. 100/382 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1928 event pairs, 1 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-11-17 11:44:00,229 INFO L119 LiptonReduction]: Number of co-enabled transitions 28080 [2023-11-17 11:45:01,574 INFO L134 LiptonReduction]: Checked pairs total: 97803 [2023-11-17 11:45:01,574 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-17 11:45:01,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:45:01,577 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;@3bd36dd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:45:01,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:45:01,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:45:01,582 INFO L124 PetriNetUnfolderBase]: 16/70 cut-off events. [2023-11-17 11:45:01,582 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:45:01,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:01,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:01,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 11:45:01,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 637773163, now seen corresponding path program 1 times [2023-11-17 11:45:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:01,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065892303] [2023-11-17 11:45:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:01,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:01,705 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 11:45:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065892303] [2023-11-17 11:45:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065892303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:01,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:45:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769909180] [2023-11-17 11:45:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:01,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:45:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:01,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:45:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:45:01,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 320 [2023-11-17 11:45:01,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 143 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 11:45:01,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:01,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 320 [2023-11-17 11:45:01,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand