/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-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 05:51:38,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 05:51:38,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 05:51:38,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 05:51:38,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 05:51:38,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 05:51:38,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 05:51:38,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 05:51:38,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 05:51:38,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 05:51:38,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 05:51:38,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 05:51:38,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 05:51:38,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 05:51:38,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 05:51:38,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 05:51:38,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 05:51:38,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 05:51:38,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 05:51:38,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 05:51:38,494 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-wrwc.epf [2022-03-16 05:51:38,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 05:51:38,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 05:51:38,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 05:51:38,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 05:51:38,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 05:51:38,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 05:51:38,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 05:51:38,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 05:51:38,523 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 05:51:38,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 05:51:38,524 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 05:51:38,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 05:51:38,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 05:51:38,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 05:51:38,526 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-16 05:51:38,527 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 05:51:38,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 05:51:38,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 05:51:38,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 05:51:38,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 05:51:38,749 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 05:51:38,751 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 05:51:38,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-2.wvr.bpl [2022-03-16 05:51:38,752 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-2.wvr.bpl' [2022-03-16 05:51:38,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 05:51:38,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 05:51:38,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 05:51:38,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 05:51:38,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 05:51:38,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,800 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 05:51:38,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 05:51:38,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 05:51:38,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 05:51:38,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 05:51:38,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 05:51:38,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 05:51:38,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 05:51:38,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 05:51:38,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/1) ... [2022-03-16 05:51:38,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 05:51:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:38,857 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) [2022-03-16 05:51:38,861 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 [2022-03-16 05:51:38,891 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 05:51:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 05:51:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 05:51:38,892 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 05:51:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 05:51:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 05:51:38,892 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 05:51:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 05:51:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 05:51:38,893 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 05:51:38,929 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 05:51:38,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 05:51:39,001 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 05:51:39,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 05:51:39,022 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-16 05:51:39,024 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-03-16 05:51:39,025 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-03-16 05:51:39,026 INFO L202 PluginConnector]: Adding new model unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 05:51:39 BoogieIcfgContainer [2022-03-16 05:51:39,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 05:51:39,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 05:51:39,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 05:51:39,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 05:51:39,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:51:38" (1/2) ... [2022-03-16 05:51:39,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6945315f and model type unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:51:39, skipping insertion in model container [2022-03-16 05:51:39,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 05:51:39" (2/2) ... [2022-03-16 05:51:39,036 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.bpl [2022-03-16 05:51:39,040 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 05:51:39,040 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 05:51:39,040 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 05:51:39,040 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 05:51:39,081 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-16 05:51:39,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 05:51:39,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:39,133 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) [2022-03-16 05:51:39,134 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 [2022-03-16 05:51:39,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 05:51:39,159 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=false [2022-03-16 05:51:39,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 05:51:39,193 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-03-16 05:51:39,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1836918704, now seen corresponding path program 1 times [2022-03-16 05:51:39,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:39,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719391014] [2022-03-16 05:51:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:39,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:39,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719391014] [2022-03-16 05:51:39,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719391014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 05:51:39,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 05:51:39,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-16 05:51:39,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437910769] [2022-03-16 05:51:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 05:51:39,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 05:51:39,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 05:51:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 05:51:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:39,349 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:39,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-03-16 05:51:39,350 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:39,408 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 22 transitions and produced 23 states. [2022-03-16 05:51:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:39,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 05:51:39,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1132983157, now seen corresponding path program 1 times [2022-03-16 05:51:39,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:39,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224127078] [2022-03-16 05:51:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:39,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:39,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:39,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224127078] [2022-03-16 05:51:39,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224127078] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 05:51:39,499 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 05:51:39,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 05:51:39,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44357200] [2022-03-16 05:51:39,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 05:51:39,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 05:51:39,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 05:51:39,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-16 05:51:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:39,501 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:39,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 05:51:39,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:39,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:39,574 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 27 states. [2022-03-16 05:51:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:39,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 05:51:39,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1934599385, now seen corresponding path program 1 times [2022-03-16 05:51:39,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:39,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284719723] [2022-03-16 05:51:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:39,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:39,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284719723] [2022-03-16 05:51:39,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284719723] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:39,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882923358] [2022-03-16 05:51:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:39,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:39,612 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) [2022-03-16 05:51:39,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-16 05:51:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:39,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-16 05:51:39,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:39,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:39,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882923358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:39,732 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:39,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-16 05:51:39,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466218311] [2022-03-16 05:51:39,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:39,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-16 05:51:39,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-16 05:51:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-16 05:51:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:39,733 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:39,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-03-16 05:51:39,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:39,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:39,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:39,775 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 31 transitions and produced 30 states. [2022-03-16 05:51:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:39,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:39,993 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,SelfDestructingSolverStorable2 [2022-03-16 05:51:39,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -133883028, now seen corresponding path program 1 times [2022-03-16 05:51:39,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:39,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879868472] [2022-03-16 05:51:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 05:51:40,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:40,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879868472] [2022-03-16 05:51:40,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879868472] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:40,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601804478] [2022-03-16 05:51:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:40,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:40,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:40,065 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) [2022-03-16 05:51:40,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-16 05:51:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:40,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-16 05:51:40,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 05:51:40,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 05:51:40,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601804478] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:40,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:40,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-16 05:51:40,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866290625] [2022-03-16 05:51:40,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:40,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-16 05:51:40,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-16 05:51:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-16 05:51:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:40,157 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:40,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 05:51:40,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:40,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:40,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:40,197 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 35 transitions and produced 33 states. [2022-03-16 05:51:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-16 05:51:40,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:40,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash -752029099, now seen corresponding path program 2 times [2022-03-16 05:51:40,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:40,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937820512] [2022-03-16 05:51:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:40,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:40,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:40,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937820512] [2022-03-16 05:51:40,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937820512] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:40,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056757722] [2022-03-16 05:51:40,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 05:51:40,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:40,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:40,452 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) [2022-03-16 05:51:40,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-16 05:51:40,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 05:51:40,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:40,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-16 05:51:40,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:40,580 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-16 05:51:40,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 18 [2022-03-16 05:51:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:40,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:40,659 INFO L353 Elim1Store]: treesize reduction 10, result has 79.6 percent of original size [2022-03-16 05:51:40,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 11 treesize of output 50 [2022-03-16 05:51:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:40,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056757722] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:40,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:40,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2022-03-16 05:51:40,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749507175] [2022-03-16 05:51:40,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:40,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-16 05:51:40,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:40,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-16 05:51:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-16 05:51:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:40,776 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:40,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 05:51:40,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:40,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:40,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:40,838 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 41 transitions and produced 39 states. [2022-03-16 05:51:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:40,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:41,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:41,056 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1814987408, now seen corresponding path program 3 times [2022-03-16 05:51:41,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:41,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534190904] [2022-03-16 05:51:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:41,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:41,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534190904] [2022-03-16 05:51:41,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534190904] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:41,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818915272] [2022-03-16 05:51:41,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-16 05:51:41,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:41,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:41,111 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) [2022-03-16 05:51:41,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-16 05:51:41,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-16 05:51:41,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:41,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-16 05:51:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:41,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:41,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818915272] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:41,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:41,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-03-16 05:51:41,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725999788] [2022-03-16 05:51:41,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:41,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-16 05:51:41,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-16 05:51:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-16 05:51:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:41,265 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:41,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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) [2022-03-16 05:51:41,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:41,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:41,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:41,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:41,366 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 52 transitions and produced 44 states. [2022-03-16 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:41,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:41,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:41,579 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1560279180, now seen corresponding path program 4 times [2022-03-16 05:51:41,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:41,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683304195] [2022-03-16 05:51:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:41,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:41,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:41,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683304195] [2022-03-16 05:51:41,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683304195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:41,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389776346] [2022-03-16 05:51:41,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-16 05:51:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:41,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:41,619 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) [2022-03-16 05:51:41,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-16 05:51:41,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-16 05:51:41,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:41,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-16 05:51:41,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:41,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:41,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389776346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:41,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:41,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-03-16 05:51:41,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330488817] [2022-03-16 05:51:41,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:41,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-16 05:51:41,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:41,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-16 05:51:41,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-16 05:51:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:41,729 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:41,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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) [2022-03-16 05:51:41,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:41,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:41,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:41,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:41,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:41,827 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 55 transitions and produced 46 states. [2022-03-16 05:51:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:41,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:42,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:42,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1147092505, now seen corresponding path program 5 times [2022-03-16 05:51:42,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:42,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985414185] [2022-03-16 05:51:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-16 05:51:42,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:42,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985414185] [2022-03-16 05:51:42,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985414185] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:42,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341732483] [2022-03-16 05:51:42,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-16 05:51:42,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:42,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:42,079 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) [2022-03-16 05:51:42,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-16 05:51:42,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-16 05:51:42,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-16 05:51:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-16 05:51:42,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-16 05:51:42,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341732483] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:42,188 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:42,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-03-16 05:51:42,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331465947] [2022-03-16 05:51:42,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:42,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-16 05:51:42,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-16 05:51:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-16 05:51:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:42,191 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:42,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:42,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:42,264 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 59 transitions and produced 50 states. [2022-03-16 05:51:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:42,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:42,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:42,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1517710704, now seen corresponding path program 6 times [2022-03-16 05:51:42,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:42,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858040247] [2022-03-16 05:51:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:42,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:42,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858040247] [2022-03-16 05:51:42,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858040247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:42,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513363754] [2022-03-16 05:51:42,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-16 05:51:42,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:42,530 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) [2022-03-16 05:51:42,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-16 05:51:42,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-16 05:51:42,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:42,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-16 05:51:42,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:42,658 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-16 05:51:42,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-03-16 05:51:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:42,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:42,952 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-03-16 05:51:42,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-03-16 05:51:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:45,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513363754] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:45,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:45,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 15 [2022-03-16 05:51:45,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855095537] [2022-03-16 05:51:45,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:45,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-16 05:51:45,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-16 05:51:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-16 05:51:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:45,920 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:45,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 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) [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:45,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:46,026 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 65 transitions and produced 56 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:51:46,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:46,237 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,SelfDestructingSolverStorable8 [2022-03-16 05:51:46,238 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 218686613, now seen corresponding path program 7 times [2022-03-16 05:51:46,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:46,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409841692] [2022-03-16 05:51:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:46,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:46,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409841692] [2022-03-16 05:51:46,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409841692] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:46,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591528614] [2022-03-16 05:51:46,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-16 05:51:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:46,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 05:51:46,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-16 05:51:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:46,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-16 05:51:46,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:46,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:46,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591528614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:46,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:46,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-03-16 05:51:46,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419454189] [2022-03-16 05:51:46,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:46,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-16 05:51:46,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-16 05:51:46,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-03-16 05:51:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:46,424 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:46,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:51:46,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:46,558 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 85 transitions and produced 64 states. [2022-03-16 05:51:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:51:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:51:46,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:46,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-16 05:51:46,767 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash 697360304, now seen corresponding path program 8 times [2022-03-16 05:51:46,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:46,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434212405] [2022-03-16 05:51:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:46,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:46,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434212405] [2022-03-16 05:51:46,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434212405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:46,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674066358] [2022-03-16 05:51:46,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 05:51:46,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:46,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:46,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 05:51:46,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-16 05:51:46,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 05:51:46,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:46,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-16 05:51:46,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:46,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:46,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674066358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:51:46,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:51:46,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-03-16 05:51:46,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389140822] [2022-03-16 05:51:46,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:51:46,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-16 05:51:46,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:51:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-16 05:51:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-03-16 05:51:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:47,000 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:51:47,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 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) [2022-03-16 05:51:47,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:47,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:47,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:47,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:47,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:47,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:51:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:51:47,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:51:47,160 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 88 transitions and produced 69 states. [2022-03-16 05:51:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:51:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:51:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:51:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:51:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:51:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:51:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:51:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:51:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:51:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:51:47,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-16 05:51:47,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-16 05:51:47,371 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:51:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:51:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash 166411125, now seen corresponding path program 9 times [2022-03-16 05:51:47,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:51:47,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183155659] [2022-03-16 05:51:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:51:47,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:51:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:51:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:47,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:51:47,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183155659] [2022-03-16 05:51:47,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183155659] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:51:47,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703974588] [2022-03-16 05:51:47,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-16 05:51:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:51:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:51:47,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 05:51:47,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-16 05:51:47,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-16 05:51:47,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:51:47,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-16 05:51:47,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:51:47,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-16 05:51:47,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 31 treesize of output 142 [2022-03-16 05:51:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:51:48,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:51:48,656 INFO L353 Elim1Store]: treesize reduction 30, result has 94.3 percent of original size [2022-03-16 05:51:48,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 22 new quantified variables, introduced 66 case distinctions, treesize of input 27 treesize of output 542 [2022-03-16 05:53:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:02,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703974588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:53:02,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:53:02,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 10] total 22 [2022-03-16 05:53:02,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011104189] [2022-03-16 05:53:02,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:53:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-16 05:53:02,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:53:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-16 05:53:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-03-16 05:53:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:53:02,723 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:53:02,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 22 states have internal predecessors, (37), 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) [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:02,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:53:02,990 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 94 transitions and produced 74 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:53:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:03,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-16 05:53:03,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-16 05:53:03,207 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:53:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:53:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash 886855760, now seen corresponding path program 10 times [2022-03-16 05:53:03,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:53:03,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395226454] [2022-03-16 05:53:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:53:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:53:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:53:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:03,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:53:03,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395226454] [2022-03-16 05:53:03,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395226454] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:53:03,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786027560] [2022-03-16 05:53:03,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-16 05:53:03,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:53:03,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:53:03,280 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 05:53:03,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-16 05:53:03,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-16 05:53:03,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:53:03,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-16 05:53:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:53:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:03,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:53:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:03,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786027560] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:53:03,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:53:03,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2022-03-16 05:53:03,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486346277] [2022-03-16 05:53:03,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:53:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-16 05:53:03,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:53:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-16 05:53:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2022-03-16 05:53:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:53:03,492 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:53:03,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 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) [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:53:03,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:53:03,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:53:03,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:53:03,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:53:03,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:03,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:03,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:53:03,684 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 119 transitions and produced 85 states. [2022-03-16 05:53:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:53:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-16 05:53:03,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-16 05:53:03,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-16 05:53:03,899 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:53:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:53:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1469274709, now seen corresponding path program 11 times [2022-03-16 05:53:03,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:53:03,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816416195] [2022-03-16 05:53:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:53:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:53:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:53:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:03,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:53:03,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816416195] [2022-03-16 05:53:03,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816416195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:53:03,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796259949] [2022-03-16 05:53:03,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-16 05:53:03,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:53:03,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:53:03,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 05:53:03,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-16 05:53:04,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-16 05:53:04,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:53:04,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-16 05:53:04,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:53:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 05:53:04,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:53:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 05:53:04,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796259949] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 05:53:04,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 05:53:04,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-03-16 05:53:04,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027592541] [2022-03-16 05:53:04,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 05:53:04,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-16 05:53:04,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:53:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-16 05:53:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2022-03-16 05:53:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:53:04,181 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:53:04,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 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) [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:53:04,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:53:04,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:53:04,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:53:04,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:04,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:04,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-03-16 05:53:04,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:53:04,399 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 122 transitions and produced 88 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-16 05:53:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-16 05:53:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-16 05:53:04,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-16 05:53:04,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-16 05:53:04,600 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:53:04,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:53:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1674046096, now seen corresponding path program 12 times [2022-03-16 05:53:04,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:53:04,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50114909] [2022-03-16 05:53:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:53:04,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:53:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:53:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:04,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:53:04,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50114909] [2022-03-16 05:53:04,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50114909] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 05:53:04,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626251155] [2022-03-16 05:53:04,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-16 05:53:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 05:53:04,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:53:04,663 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 05:53:04,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-16 05:53:04,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-16 05:53:04,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 05:53:04,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-16 05:53:04,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 05:53:04,937 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-16 05:53:04,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 39 treesize of output 252 [2022-03-16 05:53:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:53:06,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 05:53:07,981 INFO L353 Elim1Store]: treesize reduction 40, result has 95.8 percent of original size [2022-03-16 05:53:07,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 30 new quantified variables, introduced 120 case distinctions, treesize of input 35 treesize of output 980 Received shutdown request... [2022-03-16 06:05:48,618 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-16 06:05:48,618 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 [2022-03-16 06:05:48,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-16 06:05:48,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-16 06:05:48,661 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 [2022-03-16 06:05:48,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 06:05:48,832 WARN L594 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 22 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ∨-2-1 context. [2022-03-16 06:05:48,833 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-16 06:05:48,833 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 06:05:48,841 INFO L732 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1] [2022-03-16 06:05:48,843 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-16 06:05:48,843 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 06:05:48,844 INFO L202 PluginConnector]: Adding new model unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 06:05:48 BasicIcfg [2022-03-16 06:05:48,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 06:05:48,845 INFO L158 Benchmark]: Toolchain (without parser) took 850067.85ms. Allocated memory was 196.1MB in the beginning and 979.4MB in the end (delta: 783.3MB). Free memory was 154.8MB in the beginning and 574.6MB in the end (delta: -419.8MB). Peak memory consumption was 595.1MB. Max. memory is 8.0GB. [2022-03-16 06:05:48,845 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.33ms. Allocated memory is still 196.1MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 06:05:48,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.57ms. Allocated memory is still 196.1MB. Free memory was 154.7MB in the beginning and 153.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-16 06:05:48,845 INFO L158 Benchmark]: Boogie Preprocessor took 15.85ms. Allocated memory is still 196.1MB. Free memory was 153.2MB in the beginning and 152.2MB in the end (delta: 923.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 06:05:48,846 INFO L158 Benchmark]: RCFGBuilder took 199.29ms. Allocated memory is still 196.1MB. Free memory was 152.2MB in the beginning and 142.4MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-16 06:05:48,846 INFO L158 Benchmark]: TraceAbstraction took 849815.88ms. Allocated memory was 196.1MB in the beginning and 979.4MB in the end (delta: 783.3MB). Free memory was 142.0MB in the beginning and 574.6MB in the end (delta: -432.6MB). Peak memory consumption was 580.4MB. Max. memory is 8.0GB. [2022-03-16 06:05:48,847 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 0.33ms. Allocated memory is still 196.1MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.57ms. Allocated memory is still 196.1MB. Free memory was 154.7MB in the beginning and 153.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.85ms. Allocated memory is still 196.1MB. Free memory was 153.2MB in the beginning and 152.2MB in the end (delta: 923.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 199.29ms. Allocated memory is still 196.1MB. Free memory was 152.2MB in the beginning and 142.4MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 849815.88ms. Allocated memory was 196.1MB in the beginning and 979.4MB in the end (delta: 783.3MB). Free memory was 142.0MB in the beginning and 574.6MB in the end (delta: -432.6MB). Peak memory consumption was 580.4MB. 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 - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PartialOrderCegarLoop was analyzing trace of length 22 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 22 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 22 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-10-1 term,while PolyPacSimplificationTermWalker was simplifying 10 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 849.7s, OverallIterations: 15, TraceHistogramMax: 0, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 1.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 80.6s InterpolantComputationTime, 375 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 2941 SizeOfPredicates, 25 NumberOfNonLiveVariables, 662 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 183/547 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown