/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 04:55:48,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 04:55:48,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 04:55:48,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 04:55:48,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 04:55:48,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 04:55:48,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 04:55:48,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 04:55:48,747 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 04:55:48,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 04:55:48,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 04:55:48,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 04:55:48,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 04:55:48,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 04:55:48,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 04:55:48,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 04:55:48,750 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 04:55:48,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 04:55:48,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 04:55:48,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 04:55:48,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 04:55:48,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 04:55:48,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 04:55:48,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 04:55:48,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 04:55:48,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 04:55:48,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 04:55:48,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 04:55:48,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 04:55:48,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 04:55:48,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 04:55:48,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 04:55:48,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 04:55:48,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:55:48,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 04:55:48,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 04:55:48,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 04:55:48,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 04:55:48,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 04:55:48,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 04:55:48,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 04:55:48,753 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 04:55:48,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 04:55:48,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 04:55:48,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 04:55:48,969 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 04:55:48,975 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 04:55:48,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-symm.wvr.bpl [2022-01-18 04:55:48,976 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-symm.wvr.bpl' [2022-01-18 04:55:48,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 04:55:48,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 04:55:48,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 04:55:48,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 04:55:48,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 04:55:49,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,010 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 04:55:49,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 04:55:49,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 04:55:49,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 04:55:49,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 04:55:49,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 04:55:49,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 04:55:49,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 04:55:49,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 04:55:49,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/1) ... [2022-01-18 04:55:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:55:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:55:49,063 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) [2022-01-18 04:55:49,081 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 [2022-01-18 04:55:49,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 04:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 04:55:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 04:55:49,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 04:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 04:55:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 04:55:49,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 04:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 04:55:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 04:55:49,087 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 04:55:49,121 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 04:55:49,122 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 04:55:49,180 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 04:55:49,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 04:55:49,222 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 04:55:49,223 INFO L202 PluginConnector]: Adding new model container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:55:49 BoogieIcfgContainer [2022-01-18 04:55:49,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 04:55:49,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 04:55:49,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 04:55:49,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 04:55:49,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:55:48" (1/2) ... [2022-01-18 04:55:49,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c5e355 and model type container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:55:49, skipping insertion in model container [2022-01-18 04:55:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:55:49" (2/2) ... [2022-01-18 04:55:49,229 INFO L111 eAbstractionObserver]: Analyzing ICFG container-symm.wvr.bpl [2022-01-18 04:55:49,232 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 04:55:49,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 04:55:49,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 04:55:49,232 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 04:55:49,251 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 04:55:49,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 04:55:49,302 INFO L339 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 04:55:49,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 04:55:49,332 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2022-01-18 04:55:49,342 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2022-01-18 04:55:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2022-01-18 04:55:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-18 04:55:49,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:55:49,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:55:49,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:55:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:55:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1215215939, now seen corresponding path program 1 times [2022-01-18 04:55:49,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:55:49,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691251819] [2022-01-18 04:55:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:55:49,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:55:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:55:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:55:50,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:55:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691251819] [2022-01-18 04:55:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691251819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:55:50,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:55:50,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:55:50,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536386965] [2022-01-18 04:55:50,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:55:50,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:55:50,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:55:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:55:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:55:50,881 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-18 04:55:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:55:50,966 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-01-18 04:55:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:55:50,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-01-18 04:55:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:55:50,972 INFO L225 Difference]: With dead ends: 26 [2022-01-18 04:55:50,972 INFO L226 Difference]: Without dead ends: 14 [2022-01-18 04:55:50,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:55:50,975 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:55:50,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:55:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-18 04:55:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-01-18 04:55:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-01-18 04:55:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-01-18 04:55:50,993 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-01-18 04:55:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:55:50,993 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-01-18 04:55:50,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-18 04:55:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-01-18 04:55:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-18 04:55:50,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:55:50,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:55:50,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 04:55:50,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:55:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:55:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1185872579, now seen corresponding path program 2 times [2022-01-18 04:55:50,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:55:50,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952327338] [2022-01-18 04:55:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:55:50,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:55:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:55:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:55:54,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:55:54,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952327338] [2022-01-18 04:55:54,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952327338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:55:54,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:55:54,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:55:54,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269005958] [2022-01-18 04:55:54,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:55:54,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:55:54,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:55:54,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:55:54,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:55:54,689 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-18 04:55:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:55:54,744 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-01-18 04:55:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:55:54,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-01-18 04:55:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:55:54,745 INFO L225 Difference]: With dead ends: 12 [2022-01-18 04:55:54,745 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 04:55:54,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:55:54,746 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:55:54,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:55:54,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 04:55:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 04:55:54,747 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) [2022-01-18 04:55:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 04:55:54,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-01-18 04:55:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:55:54,748 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 04:55:54,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-18 04:55:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 04:55:54,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 04:55:54,750 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-18 04:55:54,750 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 04:55:54,750 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 04:55:54,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 04:55:54,752 INFO L732 BasicCegarLoop]: Path program histogram: [2] [2022-01-18 04:55:54,754 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 04:55:54,754 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 04:55:54,756 INFO L202 PluginConnector]: Adding new model container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 04:55:54 BasicIcfg [2022-01-18 04:55:54,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 04:55:54,756 INFO L158 Benchmark]: Toolchain (without parser) took 5764.82ms. Allocated memory was 398.5MB in the beginning and 736.1MB in the end (delta: 337.6MB). Free memory was 357.6MB in the beginning and 478.3MB in the end (delta: -120.7MB). Peak memory consumption was 218.5MB. Max. memory is 16.0GB. [2022-01-18 04:55:54,757 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 358.7MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 04:55:54,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.08ms. Allocated memory is still 398.5MB. Free memory was 357.5MB in the beginning and 356.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 04:55:54,757 INFO L158 Benchmark]: Boogie Preprocessor took 8.14ms. Allocated memory is still 398.5MB. Free memory was 356.0MB in the beginning and 355.1MB in the end (delta: 840.2kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 04:55:54,757 INFO L158 Benchmark]: RCFGBuilder took 202.94ms. Allocated memory is still 398.5MB. Free memory was 355.1MB in the beginning and 345.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 04:55:54,758 INFO L158 Benchmark]: TraceAbstraction took 5531.09ms. Allocated memory was 398.5MB in the beginning and 736.1MB in the end (delta: 337.6MB). Free memory was 344.6MB in the beginning and 478.3MB in the end (delta: -133.7MB). Peak memory consumption was 205.9MB. Max. memory is 16.0GB. [2022-01-18 04:55:54,759 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 0.11ms. Allocated memory is still 398.5MB. Free memory is still 358.7MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 17.08ms. Allocated memory is still 398.5MB. Free memory was 357.5MB in the beginning and 356.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 8.14ms. Allocated memory is still 398.5MB. Free memory was 356.0MB in the beginning and 355.1MB in the end (delta: 840.2kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 202.94ms. Allocated memory is still 398.5MB. Free memory was 355.1MB in the beginning and 345.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 5531.09ms. Allocated memory was 398.5MB in the beginning and 736.1MB in the end (delta: 337.6MB). Free memory was 344.6MB in the beginning and 478.3MB in the end (delta: -133.7MB). Peak memory consumption was 205.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 50]: 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: 5.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2022-01-18 04:55:54,793 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...