/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Peterson.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-29 01:31:39,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-29 01:31:39,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-29 01:31:39,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-29 01:31:39,909 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-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2022-01-29 01:31:39,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-29 01:31:39,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-29 01:31:39,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-29 01:31:39,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-29 01:31:39,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-29 01:31:39,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-29 01:31:39,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-29 01:31:39,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-29 01:31:39,933 INFO L138 SettingsManager]: * Use SBE=true [2022-01-29 01:31:39,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-29 01:31:39,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-29 01:31:39,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-29 01:31:39,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-29 01:31:39,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-29 01:31:39,936 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-29 01:31:39,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-01-29 01:31:39,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-29 01:31:39,936 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-01-29 01:31:39,936 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-01-29 01:31:39,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-29 01:31:40,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-29 01:31:40,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-29 01:31:40,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-29 01:31:40,118 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-29 01:31:40,118 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-29 01:31:40,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Peterson.bpl [2022-01-29 01:31:40,119 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Peterson.bpl' [2022-01-29 01:31:40,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-29 01:31:40,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-29 01:31:40,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-29 01:31:40,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-29 01:31:40,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-29 01:31:40,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,165 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-29 01:31:40,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-29 01:31:40,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-29 01:31:40,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-29 01:31:40,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-29 01:31:40,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-29 01:31:40,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-29 01:31:40,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-29 01:31:40,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-29 01:31:40,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/1) ... [2022-01-29 01:31:40,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-29 01:31:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 01:31:40,208 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) [2022-01-29 01:31:40,214 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 [2022-01-29 01:31:40,237 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2022-01-29 01:31:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2022-01-29 01:31:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2022-01-29 01:31:40,237 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-01-29 01:31:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-01-29 01:31:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-01-29 01:31:40,237 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-29 01:31:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-29 01:31:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-29 01:31:40,238 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-29 01:31:40,281 INFO L234 CfgBuilder]: Building ICFG [2022-01-29 01:31:40,282 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-29 01:31:40,359 INFO L275 CfgBuilder]: Performing block encoding [2022-01-29 01:31:40,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-29 01:31:40,367 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-29 01:31:40,369 INFO L202 PluginConnector]: Adding new model Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 01:31:40 BoogieIcfgContainer [2022-01-29 01:31:40,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-29 01:31:40,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-29 01:31:40,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-29 01:31:40,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-29 01:31:40,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Peterson.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 01:31:40" (1/2) ... [2022-01-29 01:31:40,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b240cf and model type Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 01:31:40, skipping insertion in model container [2022-01-29 01:31:40,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 01:31:40" (2/2) ... [2022-01-29 01:31:40,381 INFO L111 eAbstractionObserver]: Analyzing ICFG Peterson.bpl [2022-01-29 01:31:40,388 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-29 01:31:40,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-29 01:31:40,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-29 01:31:40,389 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-29 01:31:40,429 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 01:31:40,429 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 01:31:40,431 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 01:31:40,431 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 01:31:40,432 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-29 01:31:40,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-01-29 01:31:40,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 01:31:40,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-01-29 01:31:40,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-01-29 01:31:40,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-01-29 01:31:40,513 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=PARTIAL_ORDER_FA, 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 [2022-01-29 01:31:40,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-29 01:31:40,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-01-29 01:31:40,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 2 remaining) [2022-01-29 01:31:40,636 INFO L732 BasicCegarLoop]: Path program histogram: [] [2022-01-29 01:31:40,636 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (1/3) [2022-01-29 01:31:40,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-01-29 01:31:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 01:31:40,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-01-29 01:31:40,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-01-29 01:31:40,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == Process1Thread1of1ForFork1 ======== [2022-01-29 01:31:40,674 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=PARTIAL_ORDER_FA, 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 [2022-01-29 01:31:40,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-29 01:31:40,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process1Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1805572939, now seen corresponding path program 1 times [2022-01-29 01:31:40,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:40,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103175558] [2022-01-29 01:31:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:40,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 01:31:40,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:40,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103175558] [2022-01-29 01:31:40,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103175558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:40,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:40,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-29 01:31:40,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277501951] [2022-01-29 01:31:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:40,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-29 01:31:40,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-29 01:31:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-29 01:31:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:40,890 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:40,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2022-01-29 01:31:40,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:40,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-29 01:31:40,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process1Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash 579567833, now seen corresponding path program 1 times [2022-01-29 01:31:40,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:40,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058553451] [2022-01-29 01:31:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:40,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 01:31:41,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:41,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058553451] [2022-01-29 01:31:41,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058553451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:41,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:41,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-29 01:31:41,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539970636] [2022-01-29 01:31:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:41,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-29 01:31:41,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-29 01:31:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-29 01:31:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,030 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:41,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-01-29 01:31:41,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-29 01:31:41,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process1Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:41,174 INFO L85 PathProgramCache]: Analyzing trace with hash 349945630, now seen corresponding path program 1 times [2022-01-29 01:31:41,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:41,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482762880] [2022-01-29 01:31:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:41,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 01:31:41,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:41,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482762880] [2022-01-29 01:31:41,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482762880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:41,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:41,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-29 01:31:41,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044048356] [2022-01-29 01:31:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:41,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-29 01:31:41,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-29 01:31:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-29 01:31:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,215 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:41,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-01-29 01:31:41,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-01-29 01:31:41,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-29 01:31:41,291 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-29 01:31:41,291 INFO L308 ceAbstractionStarter]: Result for error location Process1Thread1of1ForFork1 was SAFE (2/3) [2022-01-29 01:31:41,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-01-29 01:31:41,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 01:31:41,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-01-29 01:31:41,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-01-29 01:31:41,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == Process0Thread1of1ForFork0 ======== [2022-01-29 01:31:41,342 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=PARTIAL_ORDER_FA, 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 [2022-01-29 01:31:41,342 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-29 01:31:41,366 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2134110811, now seen corresponding path program 1 times [2022-01-29 01:31:41,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:41,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557257586] [2022-01-29 01:31:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:41,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 01:31:41,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:41,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557257586] [2022-01-29 01:31:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557257586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:41,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:41,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-01-29 01:31:41,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241849221] [2022-01-29 01:31:41,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:41,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-29 01:31:41,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:41,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-29 01:31:41,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-29 01:31:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,380 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:41,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-01-29 01:31:41,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-29 01:31:41,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1351596968, now seen corresponding path program 1 times [2022-01-29 01:31:41,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:41,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855007655] [2022-01-29 01:31:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:41,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-29 01:31:41,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:41,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855007655] [2022-01-29 01:31:41,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855007655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:41,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:41,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-29 01:31:41,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471314440] [2022-01-29 01:31:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:41,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-29 01:31:41,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-29 01:31:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-29 01:31:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,457 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:41,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2022-01-29 01:31:41,457 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,457 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-29 01:31:41,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1995542056, now seen corresponding path program 2 times [2022-01-29 01:31:41,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:41,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941612018] [2022-01-29 01:31:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:41,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-29 01:31:41,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:41,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941612018] [2022-01-29 01:31:41,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941612018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:41,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:41,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-29 01:31:41,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127348669] [2022-01-29 01:31:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:41,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-29 01:31:41,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-29 01:31:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-29 01:31:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,515 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:41,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-01-29 01:31:41,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-29 01:31:41,531 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT] === [2022-01-29 01:31:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 01:31:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1912359714, now seen corresponding path program 1 times [2022-01-29 01:31:41,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 01:31:41,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531982400] [2022-01-29 01:31:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 01:31:41,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 01:31:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 01:31:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-29 01:31:41,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 01:31:41,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531982400] [2022-01-29 01:31:41,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531982400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 01:31:41,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 01:31:41,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-29 01:31:41,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848664599] [2022-01-29 01:31:41,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 01:31:41,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-29 01:31:41,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 01:31:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-29 01:31:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-29 01:31:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,583 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 01:31:41,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-01-29 01:31:41,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 01:31:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 01:31:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-29 01:31:41,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process0Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-01-29 01:31:41,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-29 01:31:41,628 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-01-29 01:31:41,628 INFO L308 ceAbstractionStarter]: Result for error location Process0Thread1of1ForFork0 was SAFE (3/3) [2022-01-29 01:31:41,629 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-29 01:31:41,629 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-29 01:31:41,632 INFO L202 PluginConnector]: Adding new model Peterson.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 01:31:41 BasicIcfg [2022-01-29 01:31:41,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-29 01:31:41,634 INFO L158 Benchmark]: Toolchain (without parser) took 1494.24ms. Allocated memory was 215.0MB in the beginning and 288.4MB in the end (delta: 73.4MB). Free memory was 179.6MB in the beginning and 218.8MB in the end (delta: -39.2MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. [2022-01-29 01:31:41,637 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 180.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-29 01:31:41,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.98ms. Allocated memory is still 215.0MB. Free memory was 179.5MB in the beginning and 178.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-29 01:31:41,640 INFO L158 Benchmark]: Boogie Preprocessor took 15.06ms. Allocated memory is still 215.0MB. Free memory was 178.0MB in the beginning and 177.1MB in the end (delta: 937.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-29 01:31:41,640 INFO L158 Benchmark]: RCFGBuilder took 186.44ms. Allocated memory is still 215.0MB. Free memory was 177.0MB in the beginning and 169.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-29 01:31:41,641 INFO L158 Benchmark]: TraceAbstraction took 1261.96ms. Allocated memory was 215.0MB in the beginning and 288.4MB in the end (delta: 73.4MB). Free memory was 168.6MB in the beginning and 218.8MB in the end (delta: -50.1MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. [2022-01-29 01:31:41,642 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 0.10ms. Allocated memory is still 215.0MB. Free memory is still 180.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.98ms. Allocated memory is still 215.0MB. Free memory was 179.5MB in the beginning and 178.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.06ms. Allocated memory is still 215.0MB. Free memory was 178.0MB in the beginning and 177.1MB in the end (delta: 937.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 186.44ms. Allocated memory is still 215.0MB. Free memory was 177.0MB in the beginning and 169.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1261.96ms. Allocated memory was 215.0MB in the beginning and 288.4MB in the end (delta: 73.4MB). Free memory was 168.6MB in the beginning and 218.8MB in the end (delta: -50.1MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 93, positive: 90, positive conditional: 2, positive unconditional: 88, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 2, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 2, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 90, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 90, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 92, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 90, unknown conditional: 0, unknown unconditional: 90] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 1 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 3, Number of trivial persistent sets: 2, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 90, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 93, positive: 90, positive conditional: 2, positive unconditional: 88, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 2, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 2, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 92, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 90, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 90, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 92, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 90, unknown conditional: 0, unknown unconditional: 90] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 1 - 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 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 996, positive: 859, positive conditional: 536, positive unconditional: 323, negative: 137, negative conditional: 117, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 908, positive: 859, positive conditional: 536, positive unconditional: 323, negative: 49, negative conditional: 29, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 908, positive: 859, positive conditional: 536, positive unconditional: 323, negative: 49, negative conditional: 29, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 971, positive: 859, positive conditional: 503, positive unconditional: 356, negative: 112, negative conditional: 63, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 971, positive: 859, positive conditional: 73, positive unconditional: 786, negative: 112, negative conditional: 11, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 971, positive: 859, positive conditional: 73, positive unconditional: 786, negative: 112, negative conditional: 11, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 313, positive: 287, positive conditional: 1, positive unconditional: 286, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 313, positive: 269, positive conditional: 0, positive unconditional: 269, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 18, positive conditional: 1, positive unconditional: 17, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, positive: 33, positive conditional: 1, positive unconditional: 32, negative: 87, negative conditional: 10, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 971, positive: 572, positive conditional: 72, positive unconditional: 500, negative: 86, negative conditional: 5, negative unconditional: 81, unknown: 313, unknown conditional: 7, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 313, Positive cache size: 287, Positive conditional cache size: 1, Positive unconditional cache size: 286, Negative cache size: 26, Negative conditional cache size: 6, Negative unconditional cache size: 20, Eliminated conditions: 482, Maximal queried relation: 3, Independence queries for same thread: 88 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 103, Number of trivial persistent sets: 91, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 343, positive: 323, positive conditional: 0, positive unconditional: 323, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 996, positive: 859, positive conditional: 536, positive unconditional: 323, negative: 137, negative conditional: 117, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 908, positive: 859, positive conditional: 536, positive unconditional: 323, negative: 49, negative conditional: 29, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 908, positive: 859, positive conditional: 536, positive unconditional: 323, negative: 49, negative conditional: 29, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 971, positive: 859, positive conditional: 503, positive unconditional: 356, negative: 112, negative conditional: 63, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 971, positive: 859, positive conditional: 73, positive unconditional: 786, negative: 112, negative conditional: 11, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 971, positive: 859, positive conditional: 73, positive unconditional: 786, negative: 112, negative conditional: 11, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 313, positive: 287, positive conditional: 1, positive unconditional: 286, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 313, positive: 269, positive conditional: 0, positive unconditional: 269, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 18, positive conditional: 1, positive unconditional: 17, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, positive: 33, positive conditional: 1, positive unconditional: 32, negative: 87, negative conditional: 10, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 971, positive: 572, positive conditional: 72, positive unconditional: 500, negative: 86, negative conditional: 5, negative unconditional: 81, unknown: 313, unknown conditional: 7, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 313, Positive cache size: 287, Positive conditional cache size: 1, Positive unconditional cache size: 286, Negative cache size: 26, Negative conditional cache size: 6, Negative unconditional cache size: 20, Eliminated conditions: 482, Maximal queried relation: 3, Independence queries for same thread: 88 - 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 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 939, positive: 787, positive conditional: 463, positive unconditional: 324, negative: 152, negative conditional: 132, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 843, positive: 787, positive conditional: 463, positive unconditional: 324, negative: 56, negative conditional: 36, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 843, positive: 787, positive conditional: 463, positive unconditional: 324, negative: 56, negative conditional: 36, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 907, positive: 787, positive conditional: 442, positive unconditional: 345, negative: 120, negative conditional: 64, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 907, positive: 787, positive conditional: 86, positive unconditional: 701, negative: 120, negative conditional: 11, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 907, positive: 787, positive conditional: 86, positive unconditional: 701, negative: 120, negative conditional: 11, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 313, positive: 287, positive conditional: 2, positive unconditional: 285, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 313, positive: 269, positive conditional: 0, positive unconditional: 269, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 18, positive conditional: 2, positive unconditional: 16, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, positive: 11, positive conditional: 1, positive unconditional: 10, negative: 37, negative conditional: 7, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 907, positive: 500, positive conditional: 84, positive unconditional: 416, negative: 94, negative conditional: 5, negative unconditional: 89, unknown: 313, unknown conditional: 8, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 313, Positive cache size: 287, Positive conditional cache size: 2, Positive unconditional cache size: 285, Negative cache size: 26, Negative conditional cache size: 6, Negative unconditional cache size: 20, Eliminated conditions: 409, Maximal queried relation: 3, Independence queries for same thread: 96 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 96, Number of trivial persistent sets: 87, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 344, positive: 324, positive conditional: 0, positive unconditional: 324, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 939, positive: 787, positive conditional: 463, positive unconditional: 324, negative: 152, negative conditional: 132, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 843, positive: 787, positive conditional: 463, positive unconditional: 324, negative: 56, negative conditional: 36, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 843, positive: 787, positive conditional: 463, positive unconditional: 324, negative: 56, negative conditional: 36, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 907, positive: 787, positive conditional: 442, positive unconditional: 345, negative: 120, negative conditional: 64, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 907, positive: 787, positive conditional: 86, positive unconditional: 701, negative: 120, negative conditional: 11, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 907, positive: 787, positive conditional: 86, positive unconditional: 701, negative: 120, negative conditional: 11, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 313, positive: 287, positive conditional: 2, positive unconditional: 285, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 313, positive: 269, positive conditional: 0, positive unconditional: 269, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 18, positive conditional: 2, positive unconditional: 16, negative: 26, negative conditional: 6, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, positive: 11, positive conditional: 1, positive unconditional: 10, negative: 37, negative conditional: 7, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 907, positive: 500, positive conditional: 84, positive unconditional: 416, negative: 94, negative conditional: 5, negative unconditional: 89, unknown: 313, unknown conditional: 8, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 313, Positive cache size: 287, Positive conditional cache size: 2, Positive unconditional cache size: 285, Negative cache size: 26, Negative conditional cache size: 6, Negative unconditional cache size: 20, Eliminated conditions: 409, Maximal queried relation: 3, Independence queries for same thread: 96 - 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: 54]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 5/5 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: Process0Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 130/130 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-29 01:31:41,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Forceful destruction successful, exit code 0 [2022-01-29 01:31:41,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Forceful destruction successful, exit code 0 [2022-01-29 01:31:42,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-01-29 01:31:42,288 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...