/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 10:30:24,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 10:30:24,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 10:30:24,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-04 10:30:24,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 10:30:24,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 10:30:24,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 10:30:24,460 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-MCRwithoutDepranks-Lazy.epf [2022-03-04 10:30:24,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 10:30:24,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 10:30:24,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 10:30:24,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 10:30:24,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 10:30:24,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 10:30:24,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 10:30:24,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 10:30:24,492 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 10:30:24,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 10:30:24,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 10:30:24,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 10:30:24,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 10:30:24,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 10:30:24,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 10:30:24,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 10:30:24,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 10:30:24,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 10:30:24,495 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-04 10:30:24,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 10:30:24,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 10:30:24,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 10:30:24,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 10:30:24,690 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 10:30:24,691 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 10:30:24,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl [2022-03-04 10:30:24,693 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl' [2022-03-04 10:30:24,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 10:30:24,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 10:30:24,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 10:30:24,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 10:30:24,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 10:30:24,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,729 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 10:30:24,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 10:30:24,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 10:30:24,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 10:30:24,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 10:30:24,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 10:30:24,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 10:30:24,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 10:30:24,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 10:30:24,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/1) ... [2022-03-04 10:30:24,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 10:30:24,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:24,774 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 10:30:24,779 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 10:30:24,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 10:30:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 10:30:24,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 10:30:24,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T1 given in one single declaration [2022-03-04 10:30:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure T1 [2022-03-04 10:30:24,802 INFO L138 BoogieDeclarations]: Found implementation of procedure T1 [2022-03-04 10:30:24,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T2 given in one single declaration [2022-03-04 10:30:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure T2 [2022-03-04 10:30:24,803 INFO L138 BoogieDeclarations]: Found implementation of procedure T2 [2022-03-04 10:30:24,803 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 10:30:24,839 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 10:30:24,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 10:30:24,919 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 10:30:24,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 10:30:24,927 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 10:30:24,930 INFO L202 PluginConnector]: Adding new model MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 10:30:24 BoogieIcfgContainer [2022-03-04 10:30:24,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 10:30:24,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 10:30:24,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 10:30:24,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 10:30:24,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 10:30:24" (1/2) ... [2022-03-04 10:30:24,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb51781 and model type MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:30:24, skipping insertion in model container [2022-03-04 10:30:24,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 10:30:24" (2/2) ... [2022-03-04 10:30:24,938 INFO L111 eAbstractionObserver]: Analyzing ICFG MirabelleConcurrentIncrement.bpl [2022-03-04 10:30:24,947 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 10:30:24,948 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 10:30:24,948 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 10:30:24,948 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 10:30:24,987 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-04 10:30:25,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 10:30:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:25,035 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 10:30:25,036 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 10:30:25,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 10:30:25,095 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=true, mMcrOverapproximateWrwc=true [2022-03-04 10:30:25,095 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-04 10:30:25,305 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 119 transitions and produced 106 states. [2022-03-04 10:30:25,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:30:25,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:30:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1711732150, now seen corresponding path program 1 times [2022-03-04 10:30:25,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:30:25,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835357203] [2022-03-04 10:30:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:30:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-03-04 10:30:25,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:30:25,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835357203] [2022-03-04 10:30:25,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835357203] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 10:30:25,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 10:30:25,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-04 10:30:25,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091219758] [2022-03-04 10:30:25,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 10:30:25,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 10:30:25,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:30:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 10:30:25,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 10:30:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:25,475 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:30:25,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 10:30:25,476 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:25,522 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 119 transitions and produced 106 states. [2022-03-04 10:30:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:25,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-04 10:30:25,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:30:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:30:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1711733080, now seen corresponding path program 1 times [2022-03-04 10:30:25,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:30:25,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044173177] [2022-03-04 10:30:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:30:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 135 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-04 10:30:25,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:30:25,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044173177] [2022-03-04 10:30:25,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044173177] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:30:25,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452163007] [2022-03-04 10:30:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:25,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:25,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:25,777 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 10:30:25,778 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 10:30:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:25,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-04 10:30:25,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:30:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 121 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 10:30:26,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 10:30:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 121 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 10:30:26,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452163007] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 10:30:26,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 10:30:26,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 27 [2022-03-04 10:30:26,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917266561] [2022-03-04 10:30:26,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 10:30:26,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-04 10:30:26,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:30:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-04 10:30:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=540, Unknown=0, NotChecked=0, Total=756 [2022-03-04 10:30:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:26,341 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:30:26,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 27 states have internal predecessors, (81), 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 10:30:26,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:26,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:26,893 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 177 transitions and produced 154 states. [2022-03-04 10:30:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-04 10:30:26,916 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 10:30:27,094 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,SelfDestructingSolverStorable1 [2022-03-04 10:30:27,095 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:30:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:30:27,095 INFO L85 PathProgramCache]: Analyzing trace with hash -592256640, now seen corresponding path program 2 times [2022-03-04 10:30:27,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:30:27,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532443132] [2022-03-04 10:30:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:27,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:30:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 268 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-04 10:30:27,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:30:27,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532443132] [2022-03-04 10:30:27,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532443132] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:30:27,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383922811] [2022-03-04 10:30:27,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 10:30:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:27,329 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 10:30:27,330 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 10:30:27,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 10:30:27,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 10:30:27,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-04 10:30:27,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:30:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 268 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-04 10:30:27,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 10:30:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 268 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-04 10:30:27,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383922811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 10:30:27,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 10:30:27,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2022-03-04 10:30:27,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302365397] [2022-03-04 10:30:27,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 10:30:27,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-04 10:30:27,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:30:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-04 10:30:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-03-04 10:30:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:27,659 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:30:27,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 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 10:30:27,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:27,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2022-03-04 10:30:27,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:27,968 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 217 states. [2022-03-04 10:30:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-04 10:30:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:30:28,003 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 10:30:28,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:28,183 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:30:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:30:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1633573954, now seen corresponding path program 3 times [2022-03-04 10:30:28,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:30:28,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758173262] [2022-03-04 10:30:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:30:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 361 proven. 476 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 10:30:28,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:30:28,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758173262] [2022-03-04 10:30:28,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758173262] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:30:28,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471477037] [2022-03-04 10:30:28,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 10:30:28,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:28,812 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 10:30:28,813 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 10:30:28,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-04 10:30:28,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 10:30:28,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-04 10:30:28,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:30:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2022-03-04 10:30:29,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-04 10:30:29,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471477037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 10:30:29,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-04 10:30:29,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [39] total 45 [2022-03-04 10:30:29,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191582500] [2022-03-04 10:30:29,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 10:30:29,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-04 10:30:29,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:30:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-04 10:30:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1560, Unknown=0, NotChecked=0, Total=1980 [2022-03-04 10:30:29,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:29,181 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:30:29,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 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) [2022-03-04 10:30:29,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:29,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2022-03-04 10:30:29,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:30:29,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:30,771 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7221 transitions and produced 4322 states. [2022-03-04 10:30:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:30:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:30:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:30:30,790 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 10:30:30,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:30,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:30:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:30:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1902818144, now seen corresponding path program 4 times [2022-03-04 10:30:30,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:30:30,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259384648] [2022-03-04 10:30:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:30:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18685 backedges. 3067 proven. 14051 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2022-03-04 10:30:32,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:30:32,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259384648] [2022-03-04 10:30:32,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259384648] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:30:32,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101709501] [2022-03-04 10:30:32,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 10:30:32,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:32,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:32,211 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 10:30:32,237 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 10:30:32,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 10:30:32,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 10:30:32,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 195 conjunts are in the unsatisfiable core [2022-03-04 10:30:32,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:30:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18685 backedges. 3512 proven. 13360 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2022-03-04 10:30:33,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 10:30:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18685 backedges. 3512 proven. 13360 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2022-03-04 10:30:33,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101709501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 10:30:33,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 10:30:33,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 25, 25] total 47 [2022-03-04 10:30:33,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155512320] [2022-03-04 10:30:33,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 10:30:33,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-04 10:30:33,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:30:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-04 10:30:33,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=1596, Unknown=0, NotChecked=0, Total=2256 [2022-03-04 10:30:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:33,946 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:30:33,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.4583333333333335) internal successors, (166), 47 states have internal predecessors, (166), 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 10:30:33,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:33,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:30:33,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:30:33,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:30:33,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:30:42,322 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 42773 transitions and produced 24571 states. [2022-03-04 10:30:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:30:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:30:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:30:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:30:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-04 10:30:42,345 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 10:30:42,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:42,536 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:30:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:30:42,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1081448432, now seen corresponding path program 5 times [2022-03-04 10:30:42,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:30:42,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863010197] [2022-03-04 10:30:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:30:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:30:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:30:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 292697 backedges. 96011 proven. 182213 refuted. 0 times theorem prover too weak. 14473 trivial. 0 not checked. [2022-03-04 10:30:54,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:30:54,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863010197] [2022-03-04 10:30:54,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863010197] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:30:54,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868121018] [2022-03-04 10:30:54,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 10:30:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:30:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:30:54,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 10:30:54,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-04 10:30:58,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 483 check-sat command(s) [2022-03-04 10:30:58,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 10:30:58,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 767 conjunts are in the unsatisfiable core [2022-03-04 10:30:58,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:31:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 292697 backedges. 97228 proven. 180356 refuted. 0 times theorem prover too weak. 15113 trivial. 0 not checked. [2022-03-04 10:31:01,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 10:31:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 292697 backedges. 97228 proven. 180356 refuted. 0 times theorem prover too weak. 15113 trivial. 0 not checked. [2022-03-04 10:31:03,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868121018] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 10:31:03,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 10:31:03,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 38, 38] total 64 [2022-03-04 10:31:03,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664047877] [2022-03-04 10:31:03,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 10:31:03,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-04 10:31:03,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:31:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-04 10:31:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=2865, Unknown=0, NotChecked=0, Total=4160 [2022-03-04 10:31:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:31:03,674 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:31:03,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.4923076923076923) internal successors, (227), 64 states have internal predecessors, (227), 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 10:31:03,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:31:03,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:31:03,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:31:03,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:31:03,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 144 states. [2022-03-04 10:31:03,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:31:27,898 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 131456 transitions and produced 75055 states. [2022-03-04 10:31:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:31:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:31:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:31:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:31:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-03-04 10:31:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2022-03-04 10:31:27,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-04 10:31:28,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:31:28,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:31:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:31:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1305254456, now seen corresponding path program 6 times [2022-03-04 10:31:28,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:31:28,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984206393] [2022-03-04 10:31:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:31:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:33:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:33:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1618345 backedges. 556230 proven. 1013066 refuted. 0 times theorem prover too weak. 49049 trivial. 0 not checked. [2022-03-04 10:33:19,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:33:19,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984206393] [2022-03-04 10:33:19,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984206393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:33:19,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070317556] [2022-03-04 10:33:19,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-04 10:33:19,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:33:19,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:33:19,176 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 10:33:19,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-04 10:33:19,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-04 10:33:19,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 10:33:19,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-04 10:33:19,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:33:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1618345 backedges. 5375 proven. 0 refuted. 0 times theorem prover too weak. 1612970 trivial. 0 not checked. [2022-03-04 10:33:22,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-04 10:33:22,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070317556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 10:33:22,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-04 10:33:22,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [73] total 79 [2022-03-04 10:33:22,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428107569] [2022-03-04 10:33:22,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 10:33:22,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-04 10:33:22,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:33:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-04 10:33:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2022-03-04 10:33:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:33:22,795 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:33:22,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 145 states. [2022-03-04 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 351 states. [2022-03-04 10:33:22,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:33:42,962 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 156348 transitions and produced 90059 states. [2022-03-04 10:33:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:33:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:33:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:33:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:33:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-03-04 10:33:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 352 states. [2022-03-04 10:33:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 10:33:42,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-04 10:33:43,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:33:43,164 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:33:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:33:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 183343408, now seen corresponding path program 7 times [2022-03-04 10:33:43,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:33:43,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803241884] [2022-03-04 10:33:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:33:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 10:35:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:35:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1629157 backedges. 556804 proven. 1023041 refuted. 0 times theorem prover too weak. 49312 trivial. 0 not checked. [2022-03-04 10:35:36,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 10:35:36,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803241884] [2022-03-04 10:35:36,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803241884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 10:35:36,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461333883] [2022-03-04 10:35:36,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-04 10:35:36,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 10:35:36,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 10:35:36,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 10:35:36,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-04 10:35:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 10:35:56,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 5432 conjuncts, 1807 conjunts are in the unsatisfiable core [2022-03-04 10:35:56,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 10:36:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1629157 backedges. 560555 proven. 1018056 refuted. 0 times theorem prover too weak. 50546 trivial. 0 not checked. [2022-03-04 10:36:02,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 10:36:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1629157 backedges. 560555 proven. 1018056 refuted. 0 times theorem prover too weak. 50546 trivial. 0 not checked. [2022-03-04 10:36:11,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461333883] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 10:36:11,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 10:36:11,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 55, 55] total 89 [2022-03-04 10:36:11,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061828403] [2022-03-04 10:36:11,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 10:36:11,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-04 10:36:11,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 10:36:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-04 10:36:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2595, Invalid=5415, Unknown=0, NotChecked=0, Total=8010 [2022-03-04 10:36:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:36:11,684 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 10:36:11,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.588888888888889) internal successors, (323), 89 states have internal predecessors, (323), 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 10:36:11,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:36:11,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:36:11,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:36:11,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:36:11,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 145 states. [2022-03-04 10:36:11,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 352 states. [2022-03-04 10:36:11,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 10:36:11,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 10:37:26,155 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 347354 transitions and produced 198934 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 352 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 10:37:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 708 states. [2022-03-04 10:37:26,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-04 10:37:26,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-03-04 10:37:26,357 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 10:37:26,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 10:37:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash 220681216, now seen corresponding path program 8 times [2022-03-04 10:37:26,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 10:37:26,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817645214] [2022-03-04 10:37:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 10:37:26,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2022-03-04 10:44:27,282 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-04 10:44:27,282 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-04 10:44:28,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-03-04 10:44:28,307 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown