/usr/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:02:46,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:02:46,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:02:46,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 21:02:46,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 21:02:46,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 21:02:46,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 21:02:46,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 21:02:46,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 21:02:46,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 21:02:46,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 21:02:46,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 21:02:46,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 21:02:46,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 21:02:46,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 21:02:46,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 21:02:46,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 21:02:46,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 21:02:46,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 21:02:46,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 21:02:46,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 21:02:46,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 21:02:46,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 21:02:46,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 21:02:46,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 21:02:46,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:02:46,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:02:46,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:02:46,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 21:02:46,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:02:46,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:02:46,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:02:46,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:02:46,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:02:46,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:02:46,372 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:02:46,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:02:46,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:02:46,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:02:46,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:02:46,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:02:46,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:02:46,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:02:46,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:02:46,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:02:46,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:02:46,375 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:02:46,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:02:46,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:02:46,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:02:46,647 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:02:46,648 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:02:46,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl [2022-03-15 21:02:46,650 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl' [2022-03-15 21:02:46,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:02:46,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:02:46,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:02:46,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:02:46,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:02:46,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,697 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:02:46,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:02:46,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:02:46,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:02:46,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:02:46,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:02:46,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:02:46,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:02:46,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:02:46,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/1) ... [2022-03-15 21:02:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:02:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:02:46,761 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) [2022-03-15 21:02:46,772 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 [2022-03-15 21:02:46,805 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:02:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:02:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:02:46,805 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:02:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:02:46,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:02:46,806 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:02:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:02:46,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:02:46,807 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 21:02:46,852 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:02:46,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:02:46,934 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:02:46,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:02:46,941 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 21:02:46,943 INFO L202 PluginConnector]: Adding new model file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:02:46 BoogieIcfgContainer [2022-03-15 21:02:46,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:02:46,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:02:46,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:02:46,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:02:46,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:02:46" (1/2) ... [2022-03-15 21:02:46,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247d8489 and model type file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:02:46, skipping insertion in model container [2022-03-15 21:02:46,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:02:46" (2/2) ... [2022-03-15 21:02:46,954 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-symm.wvr.bpl [2022-03-15 21:02:46,961 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:02:46,961 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:02:46,961 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:02:46,961 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:02:47,007 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 21:02:47,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:02:47,060 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 21:02:47,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 21:02:47,072 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:02:47,081 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 14 transitions, 44 flow [2022-03-15 21:02:47,087 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 14 transitions, 44 flow [2022-03-15 21:02:47,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 44 flow [2022-03-15 21:02:47,109 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2022-03-15 21:02:47,109 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 21:02:47,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-03-15 21:02:47,111 INFO L116 LiptonReduction]: Number of co-enabled transitions 16 [2022-03-15 21:02:47,208 INFO L131 LiptonReduction]: Checked pairs total: 14 [2022-03-15 21:02:47,208 INFO L133 LiptonReduction]: Total number of compositions: 5 [2022-03-15 21:02:47,218 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 10 transitions, 36 flow [2022-03-15 21:02:47,232 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-03-15 21:02:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-03-15 21:02:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 21:02:47,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:02:47,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:02:47,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:02:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:02:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1581343776, now seen corresponding path program 1 times [2022-03-15 21:02:47,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:02:47,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705365963] [2022-03-15 21:02:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:02:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:02:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:02:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:02:48,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:02:48,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705365963] [2022-03-15 21:02:48,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705365963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:02:48,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:02:48,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:02:48,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1116026354] [2022-03-15 21:02:48,662 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:02:48,666 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:02:48,676 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2022-03-15 21:02:48,677 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:02:51,645 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [50#(and (or (< 0 result_7) isNull_0 (not isNull_3)) (or (< 0 result_7) filename_2 (<= filename_4 filename_1) isNull_0) (or isNull_3 (<= (+ result_7 1) 0) (not isNull_0)) (or (<= 0 result_7) filename_2 isNull_0 (< filename_4 filename_1)) (or filename_5 isNull_3 (not filename_2) (<= (+ result_7 1) 0)) (or (< 0 result_7) filename_2 (not filename_5) isNull_0) (or (= result_7 0) (not isNull_0) (not isNull_3)) (or (not filename_5) isNull_0 isNull_3 (= result_7 0) (not filename_2)) (or filename_2 filename_5 (<= (+ filename_1 result_7) filename_4) isNull_0 isNull_3 (= (+ filename_1 (* (- 1) filename_4) 1) 0) (= (+ result_7 1) 0)))] [2022-03-15 21:02:51,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 21:02:51,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:02:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 21:02:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 21:02:51,666 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-03-15 21:02:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:02:51,895 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2022-03-15 21:02:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 21:02:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) Word has length 7 [2022-03-15 21:02:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:02:51,901 INFO L225 Difference]: With dead ends: 10 [2022-03-15 21:02:51,902 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 21:02:51,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:02:51,910 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:02:51,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:02:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 21:02:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 21:02:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-15 21:02:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 21:02:51,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-03-15 21:02:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:02:51,928 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 21:02:51,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-03-15 21:02:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 21:02:51,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 21:02:51,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 21:02:51,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 21:02:51,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 21:02:51,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:02:51,933 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-15 21:02:51,935 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:02:51,935 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:02:51,938 INFO L202 PluginConnector]: Adding new model file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:02:51 BasicIcfg [2022-03-15 21:02:51,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:02:51,939 INFO L158 Benchmark]: Toolchain (without parser) took 5270.28ms. Allocated memory was 177.2MB in the beginning and 229.6MB in the end (delta: 52.4MB). Free memory was 135.3MB in the beginning and 68.4MB in the end (delta: 66.9MB). Peak memory consumption was 120.4MB. Max. memory is 8.0GB. [2022-03-15 21:02:51,939 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 177.2MB. Free memory was 136.4MB in the beginning and 136.3MB in the end (delta: 80.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:02:51,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.70ms. Allocated memory is still 177.2MB. Free memory was 135.3MB in the beginning and 133.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 21:02:51,940 INFO L158 Benchmark]: Boogie Preprocessor took 15.64ms. Allocated memory is still 177.2MB. Free memory was 133.6MB in the beginning and 132.8MB in the end (delta: 873.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:02:51,940 INFO L158 Benchmark]: RCFGBuilder took 227.02ms. Allocated memory is still 177.2MB. Free memory was 132.8MB in the beginning and 124.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 21:02:51,941 INFO L158 Benchmark]: TraceAbstraction took 4991.96ms. Allocated memory was 177.2MB in the beginning and 229.6MB in the end (delta: 52.4MB). Free memory was 123.9MB in the beginning and 68.4MB in the end (delta: 55.6MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. [2022-03-15 21:02:51,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 177.2MB. Free memory was 136.4MB in the beginning and 136.3MB in the end (delta: 80.5kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.70ms. Allocated memory is still 177.2MB. Free memory was 135.3MB in the beginning and 133.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.64ms. Allocated memory is still 177.2MB. Free memory was 133.6MB in the beginning and 132.8MB in the end (delta: 873.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.02ms. Allocated memory is still 177.2MB. Free memory was 132.8MB in the beginning and 124.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 4991.96ms. Allocated memory was 177.2MB in the beginning and 229.6MB in the end (delta: 52.4MB). Free memory was 123.9MB in the beginning and 68.4MB in the end (delta: 55.6MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 21 PlacesBefore, 17 PlacesAfterwards, 14 TransitionsBefore, 10 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 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! [2022-03-15 21:02:51,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...