/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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 05:35:31,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 05:35:31,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 05:35:31,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-04 05:35:31,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-04 05:35:31,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-04 05:35:31,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-04 05:35:31,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-04 05:35:31,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-04 05:35:31,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-04 05:35:31,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-04 05:35:31,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-04 05:35:31,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-04 05:35:31,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-04 05:35:31,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-04 05:35:31,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-04 05:35:31,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-04 05:35:31,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 05:35:31,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 05:35:31,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 05:35:31,300 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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-04 05:35:31,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 05:35:31,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 05:35:31,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 05:35:31,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 05:35:31,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 05:35:31,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 05:35:31,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 05:35:31,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 05:35:31,324 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 05:35:31,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 05:35:31,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 05:35:31,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 05:35:31,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 05:35:31,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 05:35:31,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 05:35:31,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 05:35:31,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 05:35:31,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 05:35:31,327 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 05:35:31,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 05:35:31,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 05:35:31,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 05:35:31,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 05:35:31,526 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 05:35:31,529 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 05:35:31,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl [2022-03-04 05:35:31,530 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl' [2022-03-04 05:35:31,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 05:35:31,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 05:35:31,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 05:35:31,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 05:35:31,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 05:35:31,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,587 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 05:35:31,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 05:35:31,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 05:35:31,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 05:35:31,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 05:35:31,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 05:35:31,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 05:35:31,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 05:35:31,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 05:35:31,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/1) ... [2022-03-04 05:35:31,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 05:35:31,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:35:31,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-04 05:35:31,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-04 05:35:31,670 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-04 05:35:31,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-04 05:35:31,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-04 05:35:31,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-04 05:35:31,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-04 05:35:31,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-04 05:35:31,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 05:35:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 05:35:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 05:35:31,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-04 05:35:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-04 05:35:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-04 05:35:31,690 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 05:35:31,723 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 05:35:31,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 05:35:31,814 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 05:35:31,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 05:35:31,819 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 05:35:31,820 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 05:35:31 BoogieIcfgContainer [2022-03-04 05:35:31,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 05:35:31,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 05:35:31,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 05:35:31,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 05:35:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:35:31" (1/2) ... [2022-03-04 05:35:31,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c62f119 and model type misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 05:35:31, skipping insertion in model container [2022-03-04 05:35:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 05:35:31" (2/2) ... [2022-03-04 05:35:31,825 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-4.wvr.bpl [2022-03-04 05:35:31,828 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 05:35:31,829 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 05:35:31,829 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 05:35:31,829 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 05:35:31,852 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-04 05:35:31,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 05:35:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:35:31,940 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) [2022-03-04 05:35:31,941 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 [2022-03-04 05:35:31,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 05:35:31,966 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, mLazyFiniteAutomaton=true, 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, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=true [2022-03-04 05:35:31,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-04 05:35:32,316 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 25445 transitions and produced 10685 states. [2022-03-04 05:35:32,318 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-04 05:35:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 05:35:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2079070712, now seen corresponding path program 1 times [2022-03-04 05:35:32,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 05:35:32,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41346434] [2022-03-04 05:35:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:35:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 05:35:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:35:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25351 backedges. 652 proven. 2 refuted. 0 times theorem prover too weak. 24697 trivial. 0 not checked. [2022-03-04 05:35:32,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 05:35:32,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41346434] [2022-03-04 05:35:32,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41346434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 05:35:32,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709629904] [2022-03-04 05:35:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:35:32,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:35:32,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 05:35:32,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-04 05:35:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:35:32,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-04 05:35:32,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 05:35:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25351 backedges. 10649 proven. 0 refuted. 0 times theorem prover too weak. 14702 trivial. 0 not checked. [2022-03-04 05:35:33,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-04 05:35:33,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709629904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 05:35:33,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-04 05:35:33,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-03-04 05:35:33,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479163991] [2022-03-04 05:35:33,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 05:35:33,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 05:35:33,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 05:35:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 05:35:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-04 05:35:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:33,858 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 05:35:33,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 05:35:33,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:41,330 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1264802 transitions and produced 466754 states. [2022-03-04 05:35:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:41,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-04 05:35:41,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-04 05:35:41,541 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-04 05:35:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 05:35:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1772381646, now seen corresponding path program 1 times [2022-03-04 05:35:41,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 05:35:41,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955756504] [2022-03-04 05:35:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:35:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 05:35:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:35:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2022-03-04 05:35:41,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 05:35:41,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955756504] [2022-03-04 05:35:41,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955756504] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 05:35:41,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083743664] [2022-03-04 05:35:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:35:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:35:41,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 05:35:41,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-04 05:35:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:35:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-04 05:35:41,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 05:35:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2022-03-04 05:35:41,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 05:35:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2022-03-04 05:35:42,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083743664] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 05:35:42,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 05:35:42,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-03-04 05:35:42,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635174188] [2022-03-04 05:35:42,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 05:35:42,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-04 05:35:42,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 05:35:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-04 05:35:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-04 05:35:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:42,129 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 05:35:42,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 05:35:42,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:42,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:45,116 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 517561 transitions and produced 186121 states. [2022-03-04 05:35:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:45,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-04 05:35:45,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:45,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-04 05:35:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 05:35:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 580184580, now seen corresponding path program 2 times [2022-03-04 05:35:45,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 05:35:45,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305750136] [2022-03-04 05:35:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:35:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 05:35:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:35:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3246 backedges. 1474 proven. 2 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-03-04 05:35:45,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 05:35:45,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305750136] [2022-03-04 05:35:45,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305750136] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 05:35:45,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688169150] [2022-03-04 05:35:45,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 05:35:45,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:45,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:35:45,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 05:35:45,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-04 05:35:45,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 05:35:45,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 05:35:45,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-04 05:35:45,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 05:35:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3246 backedges. 1688 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2022-03-04 05:35:45,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-04 05:35:45,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688169150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 05:35:45,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-04 05:35:45,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 4 [2022-03-04 05:35:45,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834598827] [2022-03-04 05:35:45,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 05:35:45,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-04 05:35:45,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 05:35:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-04 05:35:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-04 05:35:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:45,838 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 05:35:45,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 05:35:45,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:45,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:45,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:46,516 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 72491 transitions and produced 28116 states. [2022-03-04 05:35:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:46,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-04 05:35:46,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:46,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-04 05:35:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 05:35:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash -473201588, now seen corresponding path program 3 times [2022-03-04 05:35:46,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 05:35:46,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995998124] [2022-03-04 05:35:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:35:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 05:35:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:35:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6198 backedges. 2260 proven. 2210 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-03-04 05:35:47,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 05:35:47,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995998124] [2022-03-04 05:35:47,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995998124] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 05:35:47,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058604426] [2022-03-04 05:35:47,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 05:35:47,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:35:47,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 05:35:47,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-04 05:35:47,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-03-04 05:35:47,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 05:35:47,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-04 05:35:47,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 05:35:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6198 backedges. 2260 proven. 2210 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-03-04 05:35:47,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 05:35:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6198 backedges. 2260 proven. 2210 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-03-04 05:35:48,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058604426] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 05:35:48,225 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 05:35:48,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-03-04 05:35:48,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459708390] [2022-03-04 05:35:48,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 05:35:48,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-04 05:35:48,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 05:35:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-04 05:35:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-04 05:35:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:48,227 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 05:35:48,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 05:35:48,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:48,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:48,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:48,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:35:52,650 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 709910 transitions and produced 270154 states. [2022-03-04 05:35:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 05:35:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 05:35:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-04 05:35:52,653 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-04 05:35:52,653 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-04 05:35:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-04 05:35:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-04 05:35:52,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-04 05:35:52,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:35:52,875 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2022-03-04 05:35:52,876 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-04 05:35:52,876 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-04 05:35:52,878 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 05:35:52 BasicIcfg [2022-03-04 05:35:52,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-04 05:35:52,879 INFO L158 Benchmark]: Toolchain (without parser) took 21328.38ms. Allocated memory was 197.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 155.0MB in the beginning and 6.4GB in the end (delta: -6.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-03-04 05:35:52,879 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 156.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 05:35:52,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.56ms. Allocated memory is still 197.1MB. Free memory was 154.8MB in the beginning and 153.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 05:35:52,884 INFO L158 Benchmark]: Boogie Preprocessor took 10.07ms. Allocated memory is still 197.1MB. Free memory was 153.4MB in the beginning and 152.5MB in the end (delta: 928.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 05:35:52,885 INFO L158 Benchmark]: RCFGBuilder took 220.36ms. Allocated memory is still 197.1MB. Free memory was 152.3MB in the beginning and 143.4MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-04 05:35:52,885 INFO L158 Benchmark]: TraceAbstraction took 21057.01ms. Allocated memory was 197.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 142.9MB in the beginning and 6.4GB in the end (delta: -6.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-03-04 05:35:52,886 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 197.1MB. Free memory is still 156.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.56ms. Allocated memory is still 197.1MB. Free memory was 154.8MB in the beginning and 153.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.07ms. Allocated memory is still 197.1MB. Free memory was 153.4MB in the beginning and 152.5MB in the end (delta: 928.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 220.36ms. Allocated memory is still 197.1MB. Free memory was 152.3MB in the beginning and 143.4MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 21057.01ms. Allocated memory was 197.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 142.9MB in the beginning and 6.4GB in the end (delta: -6.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 62]: 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 7 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 21.0s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 15.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 17, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2552 NumberOfCodeBlocks, 2552 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 3006 ConstructedInterpolants, 0 QuantifiedInterpolants, 4838 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1677 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 75295/81935 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-04 05:35:52,918 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 [2022-03-04 05:35:53,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...