/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/context1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 06:39:40,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 06:39:40,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 06:39:40,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-04 06:39:40,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-04 06:39:40,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 06:39:40,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 06:39:40,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 06:39:40,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 06:39:40,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 06:39:40,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 06:39:40,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 06:39:40,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 06:39:40,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 06:39:40,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 06:39:40,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 06:39:40,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 06:39:40,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 06:39:41,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 06:39:41,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 06:39:41,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 06:39:41,077 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 06:39:41,078 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 06:39:41,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/context1.wvr.bpl [2022-03-04 06:39:41,079 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/context1.wvr.bpl' [2022-03-04 06:39:41,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 06:39:41,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 06:39:41,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 06:39:41,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 06:39:41,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 06:39:41,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,126 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 06:39:41,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 06:39:41,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 06:39:41,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 06:39:41,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 06:39:41,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 06:39:41,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 06:39:41,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 06:39:41,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 06:39:41,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/1) ... [2022-03-04 06:39:41,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 06:39:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:41,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-04 06:39:41,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-04 06:39:41,206 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-04 06:39:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-04 06:39:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-04 06:39:41,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-04 06:39:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-04 06:39:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-04 06:39:41,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 06:39:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 06:39:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 06:39:41,208 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 06:39:41,239 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 06:39:41,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 06:39:41,291 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 06:39:41,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 06:39:41,302 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-04 06:39:41,303 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-03-04 06:39:41,303 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-03-04 06:39:41,304 INFO L202 PluginConnector]: Adding new model context1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 06:39:41 BoogieIcfgContainer [2022-03-04 06:39:41,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 06:39:41,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 06:39:41,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 06:39:41,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 06:39:41,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 06:39:41" (1/2) ... [2022-03-04 06:39:41,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ddc0f8 and model type context1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 06:39:41, skipping insertion in model container [2022-03-04 06:39:41,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "context1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 06:39:41" (2/2) ... [2022-03-04 06:39:41,313 INFO L111 eAbstractionObserver]: Analyzing ICFG context1.wvr.bpl [2022-03-04 06:39:41,319 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 06:39:41,319 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 06:39:41,319 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 06:39:41,319 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 06:39:41,348 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-04 06:39:41,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 06:39:41,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:41,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-04 06:39:41,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-04 06:39:41,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 06:39:41,403 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=true [2022-03-04 06:39:41,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-04 06:39:41,427 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-03-04 06:39:41,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash -784498925, now seen corresponding path program 1 times [2022-03-04 06:39:41,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:41,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861410360] [2022-03-04 06:39:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:41,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:41,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861410360] [2022-03-04 06:39:41,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861410360] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 06:39:41,527 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 06:39:41,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-04 06:39:41,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036344168] [2022-03-04 06:39:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 06:39:41,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 06:39:41,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:41,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 06:39:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 06:39:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:41,553 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:41,554 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) [2022-03-04 06:39:41,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:41,585 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 22 transitions and produced 22 states. [2022-03-04 06:39:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-04 06:39:41,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1473406214, now seen corresponding path program 1 times [2022-03-04 06:39:41,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:41,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479823853] [2022-03-04 06:39:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:41,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:41,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479823853] [2022-03-04 06:39:41,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479823853] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 06:39:41,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 06:39:41,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-04 06:39:41,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248718839] [2022-03-04 06:39:41,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 06:39:41,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 06:39:41,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 06:39:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 06:39:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:41,611 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:41,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-03-04 06:39:41,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:41,624 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34 transitions and produced 31 states. [2022-03-04 06:39:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-04 06:39:41,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1829288079, now seen corresponding path program 1 times [2022-03-04 06:39:41,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:41,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224713877] [2022-03-04 06:39:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:41,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:41,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:41,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224713877] [2022-03-04 06:39:41,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224713877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:41,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060605797] [2022-03-04 06:39:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:41,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:41,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:41,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-04 06:39:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:41,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-04 06:39:41,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:41,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-04 06:39:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:41,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:41,877 INFO L353 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-03-04 06:39:41,878 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2022-03-04 06:39:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:41,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060605797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:41,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:41,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-03-04 06:39:41,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584781338] [2022-03-04 06:39:41,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:41,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-04 06:39:41,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-04 06:39:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-04 06:39:41,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:41,892 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:41,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:41,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:41,928 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 40 transitions and produced 37 states. [2022-03-04 06:39:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:41,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:42,131 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 [2022-03-04 06:39:42,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:42,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash 896424714, now seen corresponding path program 2 times [2022-03-04 06:39:42,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:42,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49825247] [2022-03-04 06:39:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:42,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:42,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:42,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49825247] [2022-03-04 06:39:42,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49825247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:42,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137644194] [2022-03-04 06:39:42,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 06:39:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:42,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:42,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:42,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-04 06:39:42,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 06:39:42,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:42,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-04 06:39:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:42,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:42,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137644194] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:42,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:42,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-03-04 06:39:42,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338491806] [2022-03-04 06:39:42,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:42,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-04 06:39:42,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-04 06:39:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-04 06:39:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:42,287 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:42,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:42,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:42,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:42,312 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 54 transitions and produced 47 states. [2022-03-04 06:39:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:42,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:42,513 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 [2022-03-04 06:39:42,514 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash -698486701, now seen corresponding path program 3 times [2022-03-04 06:39:42,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:42,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753671541] [2022-03-04 06:39:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:42,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:42,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753671541] [2022-03-04 06:39:42,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753671541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:42,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529153587] [2022-03-04 06:39:42,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 06:39:42,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:42,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:42,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:42,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-04 06:39:42,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-04 06:39:42,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:42,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-04 06:39:42,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:42,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:39:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:42,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:42,705 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:39:42,706 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:39:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:42,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529153587] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:42,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:42,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-03-04 06:39:42,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097901122] [2022-03-04 06:39:42,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:42,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-04 06:39:42,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-04 06:39:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-04 06:39:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:42,734 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:42,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:42,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:42,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:42,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:42,814 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 66 transitions and produced 57 states. [2022-03-04 06:39:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:42,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-04 06:39:43,031 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 [2022-03-04 06:39:43,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -155182138, now seen corresponding path program 4 times [2022-03-04 06:39:43,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:43,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613176683] [2022-03-04 06:39:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:43,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:43,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:43,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613176683] [2022-03-04 06:39:43,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613176683] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:43,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112238039] [2022-03-04 06:39:43,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 06:39:43,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:43,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:43,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:43,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-04 06:39:43,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 06:39:43,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:43,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-04 06:39:43,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:43,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:43,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112238039] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:43,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:43,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-03-04 06:39:43,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032941236] [2022-03-04 06:39:43,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:43,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-04 06:39:43,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-04 06:39:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-04 06:39:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:43,159 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:43,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:43,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:43,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:43,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:43,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:43,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:43,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:43,177 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 85 transitions and produced 70 states. [2022-03-04 06:39:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:43,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:43,396 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 [2022-03-04 06:39:43,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash 438272719, now seen corresponding path program 5 times [2022-03-04 06:39:43,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:43,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612904068] [2022-03-04 06:39:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:43,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:43,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612904068] [2022-03-04 06:39:43,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612904068] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:43,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018524236] [2022-03-04 06:39:43,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 06:39:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:43,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:43,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:43,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-04 06:39:43,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-04 06:39:43,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:43,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-04 06:39:43,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:47,709 INFO L353 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2022-03-04 06:39:47,709 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 10 [2022-03-04 06:39:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:47,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:47,806 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:39:47,807 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:39:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:47,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018524236] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:47,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:47,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-03-04 06:39:47,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33367297] [2022-03-04 06:39:47,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:47,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-04 06:39:47,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-04 06:39:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=237, Unknown=2, NotChecked=0, Total=306 [2022-03-04 06:39:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:47,832 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:47,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:47,832 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:50,077 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 121 transitions and produced 94 states. [2022-03-04 06:39:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:50,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:50,278 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 [2022-03-04 06:39:50,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1655504102, now seen corresponding path program 6 times [2022-03-04 06:39:50,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:50,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709070188] [2022-03-04 06:39:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:50,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:39:50,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:50,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709070188] [2022-03-04 06:39:50,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709070188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:50,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213503726] [2022-03-04 06:39:50,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-04 06:39:50,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:50,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:50,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-04 06:39:50,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-04 06:39:50,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:50,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-04 06:39:50,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:50,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:39:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:39:50,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:50,467 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:39:50,467 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:39:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:39:50,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213503726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:50,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:50,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-03-04 06:39:50,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284391876] [2022-03-04 06:39:50,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:50,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-04 06:39:50,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-04 06:39:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-03-04 06:39:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:50,487 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:50,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2022-03-04 06:39:50,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:50,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:50,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:50,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:50,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:50,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:50,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:50,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:50,585 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 136 transitions and produced 107 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:50,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:50,805 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 [2022-03-04 06:39:50,806 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:50,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash -195911277, now seen corresponding path program 7 times [2022-03-04 06:39:50,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:50,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376467594] [2022-03-04 06:39:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:50,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:50,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376467594] [2022-03-04 06:39:50,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376467594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:50,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149110470] [2022-03-04 06:39:50,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-04 06:39:50,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:50,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:39:50,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-04 06:39:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:50,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-04 06:39:50,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:50,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-04 06:39:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:51,029 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:39:51,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:39:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149110470] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:51,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:51,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2022-03-04 06:39:51,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478766411] [2022-03-04 06:39:51,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:51,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-04 06:39:51,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-04 06:39:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-03-04 06:39:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:51,059 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:51,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:51,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:51,213 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 142 transitions and produced 113 states. [2022-03-04 06:39:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:51,414 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 [2022-03-04 06:39:51,415 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1755213178, now seen corresponding path program 8 times [2022-03-04 06:39:51,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:51,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165397308] [2022-03-04 06:39:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:51,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:51,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165397308] [2022-03-04 06:39:51,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165397308] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:51,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057399083] [2022-03-04 06:39:51,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 06:39:51,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:51,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:51,453 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) [2022-03-04 06:39:51,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-04 06:39:51,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 06:39:51,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:51,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-04 06:39:51,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057399083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:51,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:51,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-03-04 06:39:51,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003005569] [2022-03-04 06:39:51,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:51,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-04 06:39:51,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-04 06:39:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-04 06:39:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:51,535 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:51,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-04 06:39:51,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:51,564 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 171 transitions and produced 132 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:51,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:51,774 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 [2022-03-04 06:39:51,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1623962353, now seen corresponding path program 9 times [2022-03-04 06:39:51,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:51,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368233258] [2022-03-04 06:39:51,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:51,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:51,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368233258] [2022-03-04 06:39:51,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368233258] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:51,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219482683] [2022-03-04 06:39:51,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 06:39:51,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:51,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:51,879 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) [2022-03-04 06:39:51,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-04 06:39:51,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-04 06:39:51,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:51,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-04 06:39:51,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:51,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:39:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:51,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:51,988 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:39:51,988 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:39:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:52,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219482683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:52,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:52,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2022-03-04 06:39:52,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393830473] [2022-03-04 06:39:52,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-04 06:39:52,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-04 06:39:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-03-04 06:39:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:52,020 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:52,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:52,211 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 192 transitions and produced 148 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:39:52,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:52,412 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 [2022-03-04 06:39:52,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1219843722, now seen corresponding path program 10 times [2022-03-04 06:39:52,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:52,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480221358] [2022-03-04 06:39:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:52,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:52,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:52,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480221358] [2022-03-04 06:39:52,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480221358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:52,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412283395] [2022-03-04 06:39:52,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 06:39:52,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:52,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:52,456 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) [2022-03-04 06:39:52,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-04 06:39:52,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 06:39:52,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:52,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-04 06:39:52,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:39:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:52,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:39:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:52,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412283395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:39:52,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:39:52,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-03-04 06:39:52,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161372713] [2022-03-04 06:39:52,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:39:52,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-04 06:39:52,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:39:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-04 06:39:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-04 06:39:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:52,566 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:39:52,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:39:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:39:52,597 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 226 transitions and produced 170 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:39:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:39:52,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-04 06:39:52,815 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 [2022-03-04 06:39:52,815 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:39:52,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:39:52,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1497132333, now seen corresponding path program 11 times [2022-03-04 06:39:52,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:39:52,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065261889] [2022-03-04 06:39:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:39:52,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:39:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:39:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:39:52,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:39:52,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065261889] [2022-03-04 06:39:52,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065261889] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:39:52,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270553696] [2022-03-04 06:39:52,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 06:39:52,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:39:52,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:39:52,942 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) [2022-03-04 06:39:52,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-04 06:39:52,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-04 06:39:52,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:39:52,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-04 06:39:52,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:08,602 INFO L353 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2022-03-04 06:40:08,603 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 10 [2022-03-04 06:40:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 27 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:08,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:08,781 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:40:08,782 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:40:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:08,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270553696] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:08,811 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:08,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-03-04 06:40:08,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120531896] [2022-03-04 06:40:08,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:08,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-04 06:40:08,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-04 06:40:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=857, Unknown=11, NotChecked=0, Total=1056 [2022-03-04 06:40:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:08,812 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:08,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:40:08,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:08,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:17,589 WARN L228 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:40:18,768 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 286 transitions and produced 209 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:18,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-04 06:40:18,986 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 [2022-03-04 06:40:18,986 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:40:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:40:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash 175955882, now seen corresponding path program 12 times [2022-03-04 06:40:18,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:40:18,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996817351] [2022-03-04 06:40:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:40:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:40:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:40:19,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:40:19,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996817351] [2022-03-04 06:40:19,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996817351] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:40:19,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438246143] [2022-03-04 06:40:19,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-04 06:40:19,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:40:19,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:40:19,110 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) [2022-03-04 06:40:19,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-04 06:40:19,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-04 06:40:19,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:40:19,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-04 06:40:19,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:19,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:40:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:40:19,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:19,225 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:40:19,226 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:40:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:40:19,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438246143] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:19,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:19,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2022-03-04 06:40:19,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722535770] [2022-03-04 06:40:19,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:19,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-04 06:40:19,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-04 06:40:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-03-04 06:40:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:19,254 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:19,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:19,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:19,523 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 310 transitions and produced 228 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:19,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-04 06:40:19,724 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 [2022-03-04 06:40:19,724 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:40:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:40:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1182734159, now seen corresponding path program 13 times [2022-03-04 06:40:19,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:40:19,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262728096] [2022-03-04 06:40:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:40:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:40:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:19,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:40:19,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262728096] [2022-03-04 06:40:19,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262728096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:40:19,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125983328] [2022-03-04 06:40:19,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-04 06:40:19,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:40:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:40:19,884 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) [2022-03-04 06:40:19,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-04 06:40:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-04 06:40:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:19,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:40:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:19,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:20,014 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:40:20,014 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:40:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:20,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125983328] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:20,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:20,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 16 [2022-03-04 06:40:20,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580659084] [2022-03-04 06:40:20,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:20,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-04 06:40:20,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-04 06:40:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-03-04 06:40:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:20,047 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:20,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 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) [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:20,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:20,387 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 316 transitions and produced 234 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:20,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-04 06:40:20,589 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 [2022-03-04 06:40:20,589 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:40:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:40:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1966877622, now seen corresponding path program 14 times [2022-03-04 06:40:20,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:40:20,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578112727] [2022-03-04 06:40:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:40:20,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:40:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:20,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:40:20,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578112727] [2022-03-04 06:40:20,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578112727] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:40:20,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217960729] [2022-03-04 06:40:20,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 06:40:20,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:40:20,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:40:20,651 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:40:20,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-04 06:40:20,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 06:40:20,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:40:20,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-04 06:40:20,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:20,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:20,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217960729] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:20,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:20,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-03-04 06:40:20,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879626890] [2022-03-04 06:40:20,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:20,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-04 06:40:20,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-04 06:40:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-04 06:40:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:20,778 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:20,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:40:20,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:20,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:20,819 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 360 transitions and produced 262 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:40:20,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-04 06:40:21,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-04 06:40:21,031 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:40:21,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:40:21,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2091334637, now seen corresponding path program 15 times [2022-03-04 06:40:21,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:40:21,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775017940] [2022-03-04 06:40:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:40:21,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:40:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:21,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:40:21,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775017940] [2022-03-04 06:40:21,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775017940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:40:21,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816376754] [2022-03-04 06:40:21,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 06:40:21,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:40:21,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:40:21,212 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:40:21,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-04 06:40:21,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-04 06:40:21,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:40:21,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-04 06:40:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:21,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:40:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:21,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:21,365 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:40:21,365 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:40:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:21,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816376754] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:21,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:21,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 18 [2022-03-04 06:40:21,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801800341] [2022-03-04 06:40:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:21,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-04 06:40:21,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-04 06:40:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-03-04 06:40:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:21,410 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:21,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:40:21,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:21,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:21,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:40:21,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:21,826 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 390 transitions and produced 284 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:40:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:40:21,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-04 06:40:22,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-04 06:40:22,043 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:40:22,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:40:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash -383795194, now seen corresponding path program 16 times [2022-03-04 06:40:22,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:40:22,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672489590] [2022-03-04 06:40:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:40:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:40:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:22,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:40:22,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672489590] [2022-03-04 06:40:22,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672489590] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:40:22,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797063308] [2022-03-04 06:40:22,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 06:40:22,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:40:22,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:40:22,124 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:40:22,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-04 06:40:22,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 06:40:22,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:40:22,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-04 06:40:22,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:22,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:22,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797063308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:22,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:22,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2022-03-04 06:40:22,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194064274] [2022-03-04 06:40:22,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:22,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-04 06:40:22,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-04 06:40:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-04 06:40:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:22,247 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:22,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:40:22,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:22,295 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 439 transitions and produced 315 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:40:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:40:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:22,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-04 06:40:22,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-04 06:40:22,512 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:40:22,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:40:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 272097679, now seen corresponding path program 17 times [2022-03-04 06:40:22,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:40:22,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962287727] [2022-03-04 06:40:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:40:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:40:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:40:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:22,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:40:22,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962287727] [2022-03-04 06:40:22,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962287727] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:40:22,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624866441] [2022-03-04 06:40:22,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 06:40:22,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:40:22,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:40:22,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:40:22,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-04 06:40:22,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-04 06:40:22,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:40:22,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-04 06:40:22,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:40:54,490 INFO L353 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2022-03-04 06:40:54,491 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 10 [2022-03-04 06:40:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 54 refuted. 28 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:54,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:40:54,773 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:40:54,773 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:40:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:40:54,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624866441] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:40:54,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:40:54,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 47 [2022-03-04 06:40:54,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234579989] [2022-03-04 06:40:54,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:40:54,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-04 06:40:54,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:40:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-04 06:40:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1865, Unknown=29, NotChecked=0, Total=2256 [2022-03-04 06:40:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:40:54,826 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:40:54,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 47 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:40:54,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:40:54,827 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:08,136 WARN L228 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 60 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:41:19,241 WARN L228 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 54 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:41:19,257 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 523 transitions and produced 369 states. [2022-03-04 06:41:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:19,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-04 06:41:19,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:41:19,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:41:19,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:41:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash -870059738, now seen corresponding path program 18 times [2022-03-04 06:41:19,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:41:19,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753317669] [2022-03-04 06:41:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:41:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:41:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:41:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:41:19,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:41:19,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753317669] [2022-03-04 06:41:19,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753317669] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:41:19,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838918765] [2022-03-04 06:41:19,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-04 06:41:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:41:19,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:41:19,659 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:41:19,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-04 06:41:19,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-04 06:41:19,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:41:19,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-04 06:41:19,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:41:19,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:41:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:41:19,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:41:19,795 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:41:19,795 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:41:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:41:19,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838918765] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:41:19,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:41:19,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 20 [2022-03-04 06:41:19,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134378159] [2022-03-04 06:41:19,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:41:19,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-04 06:41:19,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:41:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-04 06:41:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-03-04 06:41:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:19,842 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:41:19,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 20 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) [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:20,379 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 556 transitions and produced 394 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:41:20,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-04 06:41:20,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:41:20,587 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:41:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:41:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1178978989, now seen corresponding path program 19 times [2022-03-04 06:41:20,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:41:20,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464257003] [2022-03-04 06:41:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:41:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:41:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:41:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:20,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:41:20,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464257003] [2022-03-04 06:41:20,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464257003] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:41:20,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645378814] [2022-03-04 06:41:20,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-04 06:41:20,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:41:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:41:20,824 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:41:20,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-04 06:41:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:41:20,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-04 06:41:20,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:41:20,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:41:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:20,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:41:20,976 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:41:20,977 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:41:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:21,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645378814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:41:21,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:41:21,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 22 [2022-03-04 06:41:21,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786159916] [2022-03-04 06:41:21,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:41:21,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-04 06:41:21,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:41:21,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-04 06:41:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-03-04 06:41:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:21,023 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:41:21,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 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) [2022-03-04 06:41:21,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:21,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:21,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:41:21,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:21,647 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 562 transitions and produced 400 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:41:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:41:21,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-04 06:41:21,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-04 06:41:21,849 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:41:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:41:21,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2129426118, now seen corresponding path program 20 times [2022-03-04 06:41:21,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:41:21,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596127946] [2022-03-04 06:41:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:41:21,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:41:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:41:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:21,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:41:21,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596127946] [2022-03-04 06:41:21,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596127946] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:41:21,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163745606] [2022-03-04 06:41:21,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 06:41:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:41:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:41:21,931 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:41:21,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-04 06:41:21,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 06:41:21,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:41:21,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-04 06:41:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:41:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:22,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:41:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:22,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163745606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:41:22,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:41:22,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2022-03-04 06:41:22,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956933538] [2022-03-04 06:41:22,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:41:22,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-04 06:41:22,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:41:22,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-04 06:41:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-04 06:41:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:22,090 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:41:22,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:22,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:41:22,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:22,146 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 621 transitions and produced 437 states. [2022-03-04 06:41:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:41:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:22,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-04 06:41:22,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-04 06:41:22,348 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:41:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:41:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 848735183, now seen corresponding path program 21 times [2022-03-04 06:41:22,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:41:22,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529180788] [2022-03-04 06:41:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:41:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:41:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:41:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:22,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:41:22,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529180788] [2022-03-04 06:41:22,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529180788] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:41:22,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938308821] [2022-03-04 06:41:22,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 06:41:22,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:41:22,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:41:22,628 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:41:22,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-04 06:41:22,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-04 06:41:22,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:41:22,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-04 06:41:22,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:41:53,483 INFO L353 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2022-03-04 06:41:53,484 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 10 [2022-03-04 06:41:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 77 refuted. 49 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:53,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:41:53,887 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:41:53,888 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:41:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:41:53,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938308821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:41:53,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:41:53,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 57 [2022-03-04 06:41:53,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328340438] [2022-03-04 06:41:53,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:41:53,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-04 06:41:53,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:41:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-04 06:41:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2752, Unknown=50, NotChecked=0, Total=3306 [2022-03-04 06:41:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:41:53,938 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:41:53,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.206896551724138) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:41:53,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:41:53,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:42:09,048 WARN L228 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 63 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:42:21,307 WARN L228 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 76 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:42:29,691 WARN L228 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 74 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:42:41,007 WARN L228 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 72 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:42:41,026 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 721 transitions and produced 501 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:42:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:42:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-04 06:42:41,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-04 06:42:41,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:42:41,245 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:42:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:42:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -197978138, now seen corresponding path program 22 times [2022-03-04 06:42:41,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:42:41,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318797220] [2022-03-04 06:42:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:42:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:42:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:42:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:42:41,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:42:41,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318797220] [2022-03-04 06:42:41,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318797220] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:42:41,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806534422] [2022-03-04 06:42:41,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 06:42:41,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:42:41,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:42:41,519 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:42:41,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-04 06:42:41,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 06:42:41,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:42:41,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-04 06:42:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:42:41,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 06:42:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:42:41,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:42:41,666 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:42:41,666 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:42:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-04 06:42:41,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806534422] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:42:41,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:42:41,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 24 [2022-03-04 06:42:41,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527001796] [2022-03-04 06:42:41,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:42:41,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-04 06:42:41,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:42:41,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-04 06:42:41,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2022-03-04 06:42:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:42:41,712 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:42:41,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:42:41,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:42:41,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-03-04 06:42:41,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:42:42,455 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 760 transitions and produced 530 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:42:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-04 06:42:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-04 06:42:42,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-04 06:42:42,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:42:42,657 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 06:42:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 06:42:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1819285869, now seen corresponding path program 23 times [2022-03-04 06:42:42,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 06:42:42,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311536440] [2022-03-04 06:42:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 06:42:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 06:42:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 06:42:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:42:42,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 06:42:42,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311536440] [2022-03-04 06:42:42,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311536440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 06:42:42,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46078355] [2022-03-04 06:42:42,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 06:42:42,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 06:42:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 06:42:42,974 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-04 06:42:42,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-04 06:42:43,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-04 06:42:43,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 06:42:43,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-04 06:42:43,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 06:43:29,727 INFO L353 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2022-03-04 06:43:29,727 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 10 [2022-03-04 06:43:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 90 refuted. 59 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:43:29,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 06:43:30,192 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-04 06:43:30,193 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-03-04 06:43:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 06:43:30,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46078355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 06:43:30,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 06:43:30,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 62 [2022-03-04 06:43:30,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160043494] [2022-03-04 06:43:30,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 06:43:30,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-04 06:43:30,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 06:43:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-04 06:43:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=3256, Unknown=64, NotChecked=0, Total=3906 [2022-03-04 06:43:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:43:30,242 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 06:43:30,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-03-04 06:43:30,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-03-04 06:43:30,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 06:43:39,530 WARN L228 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 85 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:44:41,384 WARN L228 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-04 06:50:19,740 WARN L228 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-04 06:54:28,099 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-04 06:54:28,099 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-04 06:54:28,099 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-04 06:54:28,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-04 06:54:28,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-04 06:54:28,750 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 124 known predicates. [2022-03-04 06:54:28,752 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-04 06:54:28,752 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-04 06:54:28,752 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-04 06:54:28,755 INFO L732 BasicCegarLoop]: Path program histogram: [23, 1, 1] [2022-03-04 06:54:28,756 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-04 06:54:28,756 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-04 06:54:28,757 INFO L202 PluginConnector]: Adding new model context1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 06:54:28 BasicIcfg [2022-03-04 06:54:28,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-04 06:54:28,758 INFO L158 Benchmark]: Toolchain (without parser) took 887658.66ms. Allocated memory was 187.7MB in the beginning and 233.8MB in the end (delta: 46.1MB). Free memory was 152.2MB in the beginning and 112.3MB in the end (delta: 39.9MB). Peak memory consumption was 87.6MB. Max. memory is 8.0GB. [2022-03-04 06:54:28,758 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 06:54:28,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.19ms. Allocated memory is still 187.7MB. Free memory was 152.0MB in the beginning and 150.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 06:54:28,758 INFO L158 Benchmark]: Boogie Preprocessor took 13.49ms. Allocated memory is still 187.7MB. Free memory was 150.5MB in the beginning and 149.7MB in the end (delta: 838.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 06:54:28,758 INFO L158 Benchmark]: RCFGBuilder took 161.17ms. Allocated memory is still 187.7MB. Free memory was 149.5MB in the beginning and 140.3MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-04 06:54:28,758 INFO L158 Benchmark]: TraceAbstraction took 887452.20ms. Allocated memory was 187.7MB in the beginning and 233.8MB in the end (delta: 46.1MB). Free memory was 139.7MB in the beginning and 112.3MB in the end (delta: 27.4MB). Peak memory consumption was 75.0MB. Max. memory is 8.0GB. [2022-03-04 06:54:28,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.19ms. Allocated memory is still 187.7MB. Free memory was 152.0MB in the beginning and 150.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.49ms. Allocated memory is still 187.7MB. Free memory was 150.5MB in the beginning and 149.7MB in the end (delta: 838.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 161.17ms. Allocated memory is still 187.7MB. Free memory was 149.5MB in the beginning and 140.3MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 887452.20ms. Allocated memory was 187.7MB in the beginning and 233.8MB in the end (delta: 46.1MB). Free memory was 139.7MB in the beginning and 112.3MB in the end (delta: 27.4MB). Peak memory consumption was 75.0MB. 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: 47]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 124 known predicates. - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 124 known predicates. - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 124 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 887.4s, OverallIterations: 25, TraceHistogramMax: 0, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 745.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 382, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 135.6s InterpolantComputationTime, 1031 NumberOfCodeBlocks, 1031 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 1466 ConstructedInterpolants, 46 QuantifiedInterpolants, 7443 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2155 ConjunctsInSsa, 573 ConjunctsInUnsatCore, 71 InterpolantComputations, 2 PerfectInterpolantSequences, 616/4132 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